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Check Valves
Check valves are designed to stop the flow in one direction and have unrestricted flow in the opposite direction. Typically a check valve has a spring-preloaded ball or a plunger pressing on the seat. The seat conforms to the plug, and has a through-hole such as an orifice to allow the pressure from the opposite side of the plug overcoming the spring preloading force. Check valves designated for applications in ultra high purity, UHP are typically used in photonics, semiconductor fabs or bio-pharma.
GTC Products Inc.
Ultra High Purity Check Valve, Female VCR to Male VCR, Electropolished 316L VAR SS

Inlet connection is a female VCR® fitting, the outlet connection is a fixed male VCR® Swagelok fitting. This ultra high purity check valve is made from electropolished 316L stainless steel body having no internal spring. Typical uses are vacuum lines in Class 10,000 semiconductor fabs. This valve has a springless design with all welded construction ensuring chatter-free operation. An ideal choice for applications with requirements for particle-free generation, such as in vacuum reactor vessels, photonics, medical and pharmaceutical equipment. The valve is assembled and tested in the GTC Products, Texas USA facility.
Inlet | Outlet | Housing Material | Cracking Pressure | Mfg P/N | Encole P/N | Price | |
---|---|---|---|---|---|---|---|
VCR 1/4” Female | VCR 1/4” | 316L VAR SS | 3 psi | CV2-FM | 818E201 | $ 687.00 each |
GTC Products Inc.
Ultra High Purity Check Valve, Female VCR® Union, Electropolished 316L VAR SS

Both inlet and outlet connections are identical female VCR® Swagelok fittings. Typical uses are vacuum lines in Class 10,000 semiconductor fabs. This valve has a springless design with all welded construction ensuring chatter-free operation. An ideal choice for applications with requirements for particle-free generation, such as in vacuum reactor vessels, photonics, medical and pharmaceutical equipment. These valves are assembled and tested in the GTC Products, Texas USA facility.
Inlet | Outlet | Housing Material | Cracking Pressure | Mfg P/N | Encole P/N | Price | |
---|---|---|---|---|---|---|---|
VCR 1/4” Female | VCR 1/4” Female | 316L VAR SS | 3 psi | CV2-FF | 820E401 | $ 805.50 each | |
VCR 1/2” Female | VCR 1/2” Female | 316L VAR SS | 3 psi | CV2-F8F8 | 820E402 | $ 871.00 each |
GTC Products Inc.
Ultra High Purity Check Valves, Male VCR to Female VCR Connections, Electropolished 316L VAR SS

VCR Inlet to female VCR outlet, ultra high purity check valve in Vacuum Arc Remelt (VAR) electropolished 316L stainless steel body having no internal spring. Typical uses are vacuum lines in Class 10,000 semiconductor fabs. This valve has a springless design with all welded construction ensuring chatter-free operation. An ideal choice for applications with requirements for particle-free generation, such as in vacuum reactor vessels, photonics, medical and pharmaceutical equipment. Inlet connection is male VCR® fitting, outlet connection is female VCR® Swagelok fitting. These valves are assembled and tested in the GTC Products, Texas USA facility.
Inlet | Outlet | Housing Material | Cracking Pressure | Mfg P/N | Encole P/N | Price | |
---|---|---|---|---|---|---|---|
VCR 1/4” | VCR 1/4” Female | 316L VAR SS | 3 psi | CV2-MF | 819E201 | $ 687.00 each |
GTC Products Inc.
Ultra High Purity Check Valve, Female VCR to Swivel Male VCR Connections, Electropolished 316L VAR SS

Inlet is Female VCR®, outlet is Swivel Male VCR® Swagelok fittings. This is an ultra high purity check valve in electropolished 316L stainless steel body having no internal spring. Typical uses are vacuum lines in Class 10,000 semiconductor fabs. This valve has a springless design with all welded construction ensuring chatter-free operation. An ideal choice for applications with requirements for particle-free generation, such as in vacuum reactor vessels, photonics, medical and pharmaceutical equipment. The valve is assembled and tested in the GTC Products, Texas USA facility. VCR is a trademark of Swagelok Company.
Inlet | Outlet | Housing Material | Cracking Pressure | Mfg P/N | Encole P/N | Price | |
---|---|---|---|---|---|---|---|
VCR 1/4” Female | VCR 1/4” Swivel Male | 316L VAR SS | 3 psi | CV2-FF | 821E401 | $ 687.00 each | |
VCR 1/2” Female | VCR 1/2” Swivel Male | 316L VAR SS | 3 psi | CV2-F8F8 | 821E402 | $ 718.00 each |
GTC Products Inc.
Ultra High Purity Check Valve, Swivel Male VCR to Female VCR Connections, Electropolished 316L VAR SS

Inlet is a Swivel Male VCR® and the outlet is a Female VCR® Swagelok fittings. This is an Ultra high purity check valve in electropolished 316L stainless steel body having no internal spring. Typical uses are vacuum lines in Class 10,000 semiconductor fabs. This valve has a springless design with all welded construction ensuring chatter-free operation. An ideal choice for applications with requirements for particle-free generation, such as in vacuum reactor vessels, photonics, medical and pharmaceutical equipment. These valves are assembled and tested in the GTC Products, Texas USA facility. VCR is a trademark of Swagelok Company.
Inlet | Outlet | Housing Material | Cracking Pressure | Mfg P/N | Encole P/N | Price | |
---|---|---|---|---|---|---|---|
VCR 1/4” Swivel Male | VCR 1/4” Female | 316L VAR SS | 3 psi | CV2-M4F | 822E401 | $ 687.00 each | |
VCR 1/2” Swivel Male | VCR 1/2” Female | 316L VAR SS | 3 psi | CV2-M8F8 | 822E402 | $ 718.00 each |
GTC Products Inc.
Ultra High Purity Check Valve, Swivel Male VCR® Connections Union, Electropolished 316L VAR SS

Both inlet and outlet connections are identical Swivel Male VCR® Swagelok fittings. This is an ultra high purity check valve in electropolished 316L stainless steel body having no internal spring. Typical uses are vacuum lines in Class 10,000 semiconductor fabs. This valve has a springless design with all welded construction ensuring chatter-free operation. An ideal choice for applications with requirements for particle-free generation, such as in vacuum reactor vessels, photonics, medical and pharmaceutical equipment. Both inlet and outlet connections are identical swivel male VCR* fittings. The valve is assembled and tested in the GTC Products, Texas USA facility. VCR is a trademark of Swagelok Company.
Inlet | Outlet | Housing Material | Cracking Pressure | Mfg P/N | Encole P/N | Price | |
---|---|---|---|---|---|---|---|
VCR 1/4” Swivel Male | VCR 1/4” Swivel Male | 316L VAR SS | 3 psi | CV2-M4M4 | 824E401 | $ 692.00 each | |
VCR 1/2” Swivel Male | VCR 1/2” Swivel Male | 316L VAR SS | 3 psi | CV2-M8M8 | 824E402 | $ 725.00 each |
Check-All Valve
Low Pressure Brass Housing Universal Check Valves U3, Female NPT

Brass housing check valve in a single-piece body construction. The body of the valve is machined from a bar stock for a compact design. The valve is designed for a minimum pressure drop. Connections are female NPT threads conforming to ASME B1.20.1. This valve can be used a low pressure relief valve or vacuum breaker by choosing the desired spring settings. Once set, the cracking pressure remains consistent over the life of the valve without requiring maintenance.
PED 2014/68/EU Compliant. NOTE: If the ultimate destination of this valve is to the European Union, please include that at the time of purchase so the required arrangement can be made. For reference: indicate the type of media (gas or liquid) and the danger presented by the media (Group 1 - flammable, toxic and/or oxidizing, or Group 2 - non-dangerous).
Inlet | Outlet | Max. Pressure | Housing Material | Cracking Pressure | Mfg P/N | Encole P/N | Price | |
---|---|---|---|---|---|---|---|---|
3/8” Female NPT | 3/8” Female NPT | 3,000 psi | Brass | 0.125 psi | U3CBR.125SS | 814E14001 | $ 109.72 | |
1/2” Female NPT | 1/2” Female NPT | 3,000 psi | Brass | 0.125 psi | U3DBR.125SS | 814E14002 | $ 129.74 | |
3/4” Female NPT | 3/4” Female NPT | 3,000 psi | Brass | 0.125 psi | U3FBR.125SS | 814E14003 | $ 162.16 | |
1” Female NPT | 1” Female NPT | 3,000 psi | Brass | 0.125 psi | U3HBR.125SS | 814E14004 | $ 221.25 | |
1-1/4” Female NPT | 1-1/4” Female NPT | 3,000 psi | Brass | 0.125 psi | U3IBR.125SS | 814E14005 | $ 487.65 | |
1-1/2” Female NPT | 1-1/2” Female NPT | 3,000 psi | Brass | 0.125 psi | U3JBR.125SS | 814E14006 | $ 586.15 | |
2” Female NPT | 2” Female NPT | 3,000 psi | Brass | 0.125 psi | U3KBR.125SS | 814E14007 | $ 633.84 | |
2-1/2” Female NPT | 2-1/2” Female NPT | 3,000 psi | Brass | 0.125 psi | U3LBR.125SS | 814E14008 | $ 848.92 | |
3” Female NPT | 3” Female NPT | 1,500 psi | Brass | 0.125 psi | U3MBR.125SS | 814E14009 | $ 1163.98 | |
4” Female NPT | 4” Female NPT | 1,500 psi | Brass | 0.125 psi | U3NBR.125SS | 814E140010 | $ 1584.96 | |
3/8” Female NPT | 3/8” Female NPT | 3,000 psi | Brass | 0.500 psi | U3CBR.500SS | 814E140021 | $ 109.72 | |
1/2” Female NPT | 1/2” Female NPT | 3,000 psi | Brass | 0.500 psi | U3DBR.500SS | 814E140022 | $ 129.74 | |
3/4” Female NPT | 3/4” Female NPT | 3,000 psi | Brass | 0.500 psi | U3FBR.500SS | 814E140023 | $ 162.16 | |
1” Female NPT | 1” Female NPT | 3,000 psi | Brass | 0.500 psi | U3HBR.500SS | 814E140024 | $ 221.25 | |
1-1/4” Female NPT | 1-1/4” Female NPT | 3,000 psi | Brass | 0.500 psi | U3IBR.500SS | 814E140025 | $ 487.65 | |
1-1/2” Female NPT | 1-1/2” Female NPT | 3,000 psi | Brass | 0.500 psi | U3JBR.500SS | 814E140026 | $ 586.15 | |
2” Female NPT | 2” Female NPT | 3,000 psi | Brass | 0.500 psi | U3KBR.500SS | 814E140027 | $ 633.84 | |
2-1/2” Female NPT | 2-1/2” Female NPT | 3,000 psi | Brass | 0.500 psi | U3LBR.500SS | 814E140028 | $ 848.92 | |
3” Female NPT | 3” Female NPT | 1,500 psi | Brass | 0.500 psi | U3MBR.500SS | 814E140029 | $ 1163.98 | |
4” Female NPT | 4” Female NPT | 1,500 psi | Brass | 0.500 psi | U3NBR.500SS | 814E140030 | $ 1584.96 | |
3/8” Female NPT | 3/8” Female NPT | 3,000 psi | Brass | 1.50 psi | U3CBR1.50SS | 814E1400101 | $ 109.72 | |
1/2” Female NPT | 1/2” Female NPT | 3,000 psi | Brass | 1.50 psi | U3DBR1.50SS | 814E1400102 | $ 129.74 | |
3/4” Female NPT | 3/4” Female NPT | 3,000 psi | Brass | 1.50 psi | U3FBR1.50SS | 814E1400103 | $ 162.16 | |
1” Female NPT | 1” Female NPT | 3,000 psi | Brass | 1.50 psi | U3HBR1.50SS | 814E1400104 | $ 221.25 | |
1-1/4” Female NPT | 1-1/4” Female NPT | 3,000 psi | Brass | 1.50 psi | U3IBR1.50SS | 814E1400105 | $ 487.65 | |
1-1/2” Female NPT | 1-1/2” Female NPT | 3,000 psi | Brass | 1.50 psi | U3JBR1.50SS | 814E1400106 | $ 586.15 | |
2” Female NPT | 2” Female NPT | 3,000 psi | Brass | 1.50 psi | U3KBR1.50SS | 814E1400107 | $ 633.84 | |
2-1/2” Female NPT | 2-1/2” Female NPT | 3,000 psi | Brass | 1.50 psi | U3LBR1.50SS | 814E1400108 | $ 848.92 | |
3” Female NPT | 3” Female NPT | 1,500 psi | Brass | 1.50 psi | U3MBR1.50SS | 814E1400109 | $ 1163.98 | |
4” Female NPT | 4” Female NPT | 1,500 psi | Brass | 1.50 psi | U3NBR1.50SS | 814E1400110 | $ 1584.96 | |
3/8” Female NPT | 3/8” Female NPT | 3,000 psi | Brass | 3.50 psi | U3CBR3.50SS | 814E1400121 | $ 109.72 | |
1/2” Female NPT | 1/2” Female NPT | 3,000 psi | Brass | 3.50 psi | U3DBR3.50SS | 814E1400122 | $ 129.74 | |
3/4” Female NPT | 3/4” Female NPT | 3,000 psi | Brass | 3.50 psi | U3FBR3.50SS | 814E1400123 | $ 162.16 | |
1” Female NPT | 1” Female NPT | 3,000 psi | Brass | 3.50 psi | U3HBR3.50SS | 814E1400124 | $ 221.25 | |
1-1/4” Female NPT | 1-1/4” Female NPT | 3,000 psi | Brass | 3.50 psi | U3IBR3.50SS | 814E1400125 | $ 487.65 | |
1-1/2” Female NPT | 1-1/2” Female NPT | 3,000 psi | Brass | 3.50 psi | U3JBR3.50SS | 814E1400126 | $ 586.15 | |
2” Female NPT | 2” Female NPT | 3,000 psi | Brass | 3.50 psi | U3KBR3.50SS | 814E1400127 | $ 633.84 | |
2-1/2” Female NPT | 2-1/2” Female NPT | 3,000 psi | Brass | 3.50 psi | U3LBR3.50SS | 814E1400128 | $ 848.92 | |
3” Female NPT | 3” Female NPT | 1,500 psi | Brass | 3.50 psi | U3MBR3.50SS | 814E1400129 | $ 1163.98 | |
4” Female NPT | 4” Female NPT | 1,500 psi | Brass | 3.50 psi | U3NBR3.50SS | 814E1400130 | $ 1584.96 |
GTC Products Inc.
Ultra High Purity Check Valve with Tube Butt Weld Connections, Electropolished 316L VAR SS

Check valve in Vacuum Arc Remelt (VAR) electropolished 316L stainless steel body having no internal spring for ultra high purity applications. Typical uses are vacuum lines in Class 10,000 semiconductor fabs. This valve has a springless design with all welded construction ensuring chatter-free operation. An ideal choice for applications with requirements for particle-free generation, such as in vacuum reactor vessels, photonics, medical and pharmaceutical equipment. For added chemical compatibility and higher operating temperature this valve has a Kalrez (TM) seal.Inlet and outlet end connections are identical tube stubs of standard size, ready for butt-welding into the plumbing lines at customer site. These valves are assembled and tested in the GTC Products, Texas USA facility.
Inlet | Outlet | Housing Material | Cracking Pressure | Mfg P/N | Encole P/N | Price | |
---|---|---|---|---|---|---|---|
1/4” Tube Weld Stub | 1/4” Tube Weld Stub | 316L VAR SS | 3 psi | CV2-TT | 902E601 | $ 790.50 each | |
3/8” Tube Weld Stub | 3/8” Tube Weld Stub | 316L VAR SS | 3 psi | CV2-66 | 902E602 | $ 845.80 each | |
1/2” Tube Weld Stub | 1/2” Tube Weld Stub | 316L VAR SS | 3 psi | CV2-88 | 902E603 | $ 925.50 each |
Check-All Valve
Carbon Steel Housing Universal Low Pressure Check Valves, Female NPT

Check valve in a single-piece body construction. Housing is made from Carbon steel. The body of the valve is machined from a bar stock for a compact design. The valve is designed for a minimum pressure drop. Connections are female NPT threads conforming to ASME B1.20.1. This valve can be used a low pressure relief valve or vacuum breaker by choosing the desired spring settings. Once set, the cracking pressure remains consistent over the life of the valve without requiring maintenance.
Inlet | Outlet | Housing Material | Cracking Pressure | Mfg P/N | Encole P/N | Price | |
---|---|---|---|---|---|---|---|
3/8” Female NPT | 3/8” Female NPT | Carbon Steel | 0.125 psi | U3CCS.125SS | 900E12001 | $ 100.11 | |
1/2” Female NPT | 1/2” Female NPT | Carbon Steel | 0.125 psi | U3DCS.125SS | 900E12002 | $ 119.32 | |
3/4” Female NPT | 3/4” Female NPT | Carbon Steel | 0.125 psi | U3FCS.125SS | 900E12003 | $ 149.83 | |
1” Female NPT | 1” Female NPT | Carbon Steel | 0.125 psi | U3HCS.125SS | 900E12004 | $ 203.85 | |
1-1/4” Female NPT | 1-1/4” Female NPT | Carbon Steel | 0.125 psi | U3ICS.125SS | 900E12005 | $ 361.32 | |
1-1/2” Female NPT | 1-1/2” Female NPT | Carbon Steel | 0.125 psi | U3JCS.125SS | 900E12006 | $ 373.50 | |
2” Female NPT | 2” Female NPT | Carbon Steel | 0.125 psi | U3KCS.125SS | 900E12007 | $ 431.45 | |
2-1/2” Female NPT | 2-1/2” Female NPT | Carbon Steel | 0.125 psi | U3LCS.125SS | 900E12008 | $ 622.78 | |
3” Female NPT | 3” Female NPT | Carbon Steel | 0.125 psi | U3MCS.125SS | 900E12009 | $ 709.55 | |
4” Female NPT | 4” Female NPT | Carbon Steel | 0.125 psi | U3NCS.125SS | 900E120010 | $ 934.25 | |
3/8” Female NPT | 3/8” Female NPT | Carbon Steel | 0.500 psi | U3CCS.500SS | 900E120021 | $ 100.11 | |
1/2” Female NPT | 1/2” Female NPT | Carbon Steel | 0.500 psi | U3DCS.500SS | 900E120022 | $ 119.32 | |
3/4” Female NPT | 3/4” Female NPT | Carbon Steel | 0.500 psi | U3FCS.500SS | 900E120023 | $ 149.83 | |
1” Female NPT | 1” Female NPT | Carbon Steel | 0.500 psi | U3HCS.500SS | 900E120024 | $ 203.85 | |
1-1/4” Female NPT | 1-1/4” Female NPT | Carbon Steel | 0.500 psi | U3ICS.500SS | 900E120025 | $ 361.32 | |
1-1/2” Female NPT | 1-1/2” Female NPT | Carbon Steel | 0.500 psi | U3JCS.500SS | 900E120026 | $ 373.50 | |
2” Female NPT | 2” Female NPT | Carbon Steel | 0.500 psi | U3KCS.500SS | 900E120027 | $ 431.45 | |
2-1/2” Female NPT | 2-1/2” Female NPT | Carbon Steel | 0.500 psi | U3LCS.500SS | 900E120028 | $ 622.78 | |
3” Female NPT | 3” Female NPT | Carbon Steel | 0.500 psi | U3MCS.500SS | 900E120029 | $ 709.55 | |
4” Female NPT | 4” Female NPT | Carbon Steel | 0.500 psi | U3NCS.500SS | 900E120030 | $ 934.25 | |
3/8” Female NPT | 3/8” Female NPT | Carbon Steel | 1.50 psi | U3CCS1.50SS | 900E1200101 | $ 100.11 | |
1/2” Female NPT | 1/2” Female NPT | Carbon Steel | 1.50 psi | U3DCS1.50SS | 900E1200102 | $ 119.32 | |
3/4” Female NPT | 3/4” Female NPT | Carbon Steel | 1.50 psi | U3FCS1.50SS | 900E1200103 | $ 149.83 | |
1” Female NPT | 1” Female NPT | Carbon Steel | 1.50 psi | U3HCS1.50SS | 900E1200104 | $ 203.85 | |
1-1/4” Female NPT | 1-1/4” Female NPT | Carbon Steel | 1.50 psi | U3ICS1.50SS | 900E1200105 | $ 361.32 | |
1-1/2” Female NPT | 1-1/2” Female NPT | Carbon Steel | 1.50 psi | U3JCS1.50SS | 900E1200106 | $ 373.50 | |
2” Female NPT | 2” Female NPT | Carbon Steel | 1.50 psi | U3KCS1.50SS | 900E1200107 | $ 431.45 | |
2-1/2” Female NPT | 2-1/2” Female NPT | Carbon Steel | 1.50 psi | U3LCS1.50SS | 900E1200108 | $ 622.78 | |
3” Female NPT | 3” Female NPT | Carbon Steel | 1.50 psi | U3MCS1.50SS | 900E1200109 | $ 709.55 | |
4” Female NPT | 4” Female NPT | Carbon Steel | 1.50 psi | U3NCS1.50SS | 900E1200110 | $ 934.25 | |
3/8” Female NPT | 3/8” Female NPT | Carbon Steel | 3.50 psi | U3CCS3.50SS | 900E1200121 | $ 100.11 | |
1/2” Female NPT | 1/2” Female NPT | Carbon Steel | 3.50 psi | U3DCS3.50SS | 900E1200122 | $ 119.32 | |
3/4” Female NPT | 3/4” Female NPT | Carbon Steel | 3.50 psi | U3FCS3.50SS | 900E1200123 | $ 149.83 | |
1” Female NPT | 1” Female NPT | Carbon Steel | 3.50 psi | U3HCS3.50SS | 900E1200124 | $ 203.85 | |
1-1/4” Female NPT | 1-1/4” Female NPT | Carbon Steel | 3.50 psi | U3ICS3.50SS | 900E1200125 | $ 361.32 | |
1-1/2” Female NPT | 1-1/2” Female NPT | Carbon Steel | 3.50 psi | U3JCS3.50SS | 900E1200126 | $ 373.50 | |
2” Female NPT | 2” Female NPT | Carbon Steel | 3.50 psi | U3KCS3.50SS | 900E1200127 | $ 431.45 | |
2-1/2” Female NPT | 2-1/2” Female NPT | Carbon Steel | 3.50 psi | U3LCS3.50SS | 900E1200128 | $ 622.78 | |
3” Female NPT | 3” Female NPT | Carbon Steel | 3.50 psi | U3MCS3.50SS | 900E1200129 | $ 709.55 | |
4” Female NPT | 4” Female NPT | Carbon Steel | 3.50 psi | U3NCS3.50SS | 900E1200130 | $ 934.25 |
GTC Products Inc.
Ultra Clean Chatter-Free Check Valve, Male VCR® Connections Union, Electropolished 316L VAR SS

Male VCR union check valve in electropolished 316L stainless steel body having no internal spring for ultra high purity applications. Typical uses are vacuum lines in Class 10,000 semiconductor fabs. This valve has a springless design with all welded construction ensuring chatter-free operation. An ideal choice for applications with requirements for particle-free generation, such as in vacuum reactor vessels, photonics, medical and pharmaceutical equipment. For added chemical compatibility and higher operating temperature this valve has Kalrez (TM) seal. Inlet and outlet end connections are identical VCR fixed male fittings. These valves are assembled and tested in the GTC Products, Texas USA facility.*VCR is a trademark of Swagelok Company.
Inlet | Outlet | Housing Material | Cracking Pressure | Mfg P/N | Encole P/N | Price | |
---|---|---|---|---|---|---|---|
VCR 1/4” | VCR 1/4” | 316L VAR SS | 3 psi | CV2-MM | 903E201 | $ 684.00 each |
Check-All Valve
316 Stainless Steel Universal Low Pressure Check Valves, Female NPT

Stainless steel check valve in a single-piece body construction. The housing is made from 316 Stainless. Connections are female NPT threads conforming to ASME B1.20.1. Typical applications include in-line check valve to prevent back-flow. This valve can be used a low pressure relief valve or vacuum breaker by choosing low spring settings.
Inlet | Outlet | Housing Material | Cracking Pressure | Mfg P/N | Encole P/N | Price | |
---|---|---|---|---|---|---|---|
3/8” Female NPT | 3/8” Female NPT | 316 Stainless | 0.125 psi | U3CSS.125SS | 901E12001 | $ 127.90 | |
1/2” Female NPT | 1/2” Female NPT | 316 Stainless | 0.125 psi | U3DSS.125SS | 901E12002 | $ 141.65 | |
3/4” Female NPT | 3/4” Female NPT | 316 Stainless | 0.125 psi | U3FSS.125SS | 901E12003 | $ 169.90 | |
1” Female NPT | 1” Female NPT | 316 Stainless | 0.125 psi | U3HSS.125SS | 901E12004 | $ 239.55 | |
1-1/4” Female NPT | 1-1/4” Female NPT | 316 Stainless | 0.125 psi | U3ISS.125SS | 901E12005 | $ 380.72 | |
1-1/2” Female NPT | 1-1/2” Female NPT | 316 Stainless | 0.125 psi | U3JSS.125SS | 901E12006 | $ 390.38 | |
2” Female NPT | 2” Female NPT | 316 Stainless | 0.125 psi | U3KSS.125SS | 901E12007 | $ 466.50 | |
2-1/2” Female NPT | 2-1/2” Female NPT | 316 Stainless | 0.125 psi | U3LSS.125SS | 901E12008 | $ 675.38 | |
3” Female NPT | 3” Female NPT | 316 Stainless | 0.125 psi | U3MSS.125SS | 901E12009 | $ 764.60 | |
4” Female NPT | 4” Female NPT | 316 Stainless | 0.125 psi | U3NSS.125SS | 901E120010 | $ 994.30 | |
3/8” Female NPT | 3/8” Female NPT | 316 Stainless | 0.500 psi | U3CSS.500SS | 901E120021 | $ 127.90 | |
1/2” Female NPT | 1/2” Female NPT | 316 Stainless | 0.500 psi | U3DSS.500SS | 901E120022 | $ 141.65 | |
3/4” Female NPT | 3/4” Female NPT | 316 Stainless | 0.500 psi | U3FSS.500SS | 901E120023 | $ 169.90 | |
1” Female NPT | 1” Female NPT | 316 Stainless | 0.500 psi | U3HSS.500SS | 901E120024 | $ 239.55 | |
1-1/4” Female NPT | 1-1/4” Female NPT | 316 Stainless | 0.500 psi | U3ISS.500SS | 901E120025 | $ 380.72 | |
1-1/2” Female NPT | 1-1/2” Female NPT | 316 Stainless | 0.500 psi | U3JSS.500SS | 901E120026 | $ 390.38 | |
2” Female NPT | 2” Female NPT | 316 Stainless | 0.500 psi | U3KSS.500SS | 901E120027 | $ 466.50 | |
2-1/2” Female NPT | 2-1/2” Female NPT | 316 Stainless | 0.500 psi | U3LSS.500SS | 901E120028 | $ 675.38 | |
3” Female NPT | 3” Female NPT | 316 Stainless | 0.500 psi | U3MSS.500SS | 901E120029 | $ 764.60 | |
4” Female NPT | 4” Female NPT | 316 Stainless | 0.500 psi | U3NSS.500SS | 901E120030 | $ 994.30 | |
3/8” Female NPT | 3/8” Female NPT | 316 Stainless | 1.50 psi | U3CSS1.50SS | 901E1200101 | $ 127.90 | |
1/2” Female NPT | 1/2” Female NPT | 316 Stainless | 1.50 psi | U3DSS1.50SS | 901E1200102 | $ 141.65 | |
3/4” Female NPT | 3/4” Female NPT | 316 Stainless | 1.50 psi | U3FSS1.50SS | 901E1200103 | $ 169.90 | |
1” Female NPT | 1” Female NPT | 316 Stainless | 1.50 psi | U3HSS1.50SS | 901E1200104 | $ 239.55 | |
1-1/4” Female NPT | 1-1/4” Female NPT | 316 Stainless | 1.50 psi | U3ISS1.50SS | 901E1200105 | $ 380.72 | |
1-1/2” Female NPT | 1-1/2” Female NPT | 316 Stainless | 1.50 psi | U3JSS1.50SS | 901E1200106 | $ 390.38 | |
2” Female NPT | 2” Female NPT | 316 Stainless | 1.50 psi | U3KSS1.50SS | 901E1200107 | $ 466.50 | |
2-1/2” Female NPT | 2-1/2” Female NPT | 316 Stainless | 1.50 psi | U3LSS1.50SS | 901E1200108 | $ 675.38 | |
3” Female NPT | 3” Female NPT | 316 Stainless | 1.50 psi | U3MSS1.50SS | 901E1200109 | $ 764.60 | |
4” Female NPT | 4” Female NPT | 316 Stainless | 1.50 psi | U3NSS1.50SS | 901E1200110 | $ 994.30 | |
3/8” Female NPT | 3/8” Female NPT | 316 Stainless | 3.50 psi | U3CSS3.50SS | 901E1200121 | $ 127.90 | |
1/2” Female NPT | 1/2” Female NPT | 316 Stainless | 3.50 psi | U3DSS3.50SS | 901E1200122 | $ 141.65 | |
3/4” Female NPT | 3/4” Female NPT | 316 Stainless | 3.50 psi | U3FSS3.50SS | 901E1200123 | $ 169.90 | |
1” Female NPT | 1” Female NPT | 316 Stainless | 3.50 psi | U3HSS3.50SS | 901E1200124 | $ 239.55 | |
1-1/4” Female NPT | 1-1/4” Female NPT | 316 Stainless | 3.50 psi | U3ISS3.50SS | 901E1200125 | $ 380.72 | |
1-1/2” Female NPT | 1-1/2” Female NPT | 316 Stainless | 3.50 psi | U3JSS3.50SS | 901E1200126 | $ 390.38 | |
2” Female NPT | 2” Female NPT | 316 Stainless | 3.50 psi | U3KSS3.50SS | 901E1200127 | $ 466.50 | |
2-1/2” Female NPT | 2-1/2” Female NPT | 316 Stainless | 3.50 psi | U3LSS3.50SS | 901E1200128 | $ 675.38 | |
3” Female NPT | 3” Female NPT | 316 Stainless | 3.50 psi | U3MSS3.50SS | 901E1200129 | $ 764.60 | |
4” Female NPT | 4” Female NPT | 316 Stainless | 3.50 psi | U3NSS3.50SS | 901E1200130 | $ 994.30 |
Check-All Valve
High Pressure Brass Housing Universal Check Valve U1, Female NPT

Brass housing check valve in a single-piece body construction. The body of the valve is machined from a bar stock for a compact design. The valve is designed for a minimum pressure drop. Connections are female NPT threads conforming to ASME B1.20.1. This valve can be used a low pressure relief valve or vacuum breaker by choosing the desired spring settings. Once set, the cracking pressure remains consistent over the life of the valve without requiring maintenance.
PED 2014/68/EU Compliant. NOTE: If the ultimate destination of this valve is to the European Union, please include that at the time of purchase so the required arrangement can be made. For reference: indicate the type of media (gas or liquid) and the danger presented by the media (Group 1 - flammable, toxic and/or oxidizing, or Group 2 - non-dangerous).
Inlet | Outlet | Housing Material | Cracking Pressure | Max. Pressure | Mfg P/N | Encole P/N | Price | |
---|---|---|---|---|---|---|---|---|
3/8” Female NPT | 3/8” Female NPT | Brass | 0.125 psi | 10,000 psi | U1CBRMT.125SS | 1138E8401 | $ 106.98 each | |
1/2” Female NPT | 1/2” Female NPT | Brass | 0.125 psi | 10,000 psi | U1DBRMT.125SS | 1138E8402 | $ 126.60 each | |
3/4” Female NPT | 3/4” Female NPT | Brass | 0.125 psi | 10,000 psi | U1FBRMT.125SS | 1138E8403 | $ 169.90 each | |
1” Female NPT | 1” Female NPT | Brass | 0.125 psi | 10,000 psi | U1HBRMT.125SS | 1138E8404 | $ 235.84 each | |
1-1/4” Female NPT | 1-1/4” Female NPT | Brass | 0.125 psi | 10,000 psi | U1IBRMT.125SS | 1138E8405 | $ 519.45 each | |
1-1/2” Female NPT | 1-1/2” Female NPT | Brass | 0.125 psi | 10,000 psi | U1JBRMT.125SS | 1138E8406 | $ 613.75 each | |
3/8” Female NPT | 3/8” Female NPT | Brass | 0.500 psi | 10,000 psi | U1CBRMT.500SS | 1138E84013 | $ 106.98 each | |
1/2” Female NPT | 1/2” Female NPT | Brass | 0.500 psi | 10,000 psi | U1DBRMT.500SS | 1138E84014 | $ 126.60 each | |
3/4” Female NPT | 3/4” Female NPT | Brass | 0.500 psi | 10,000 psi | U1FBRMT.500SS | 1138E84015 | $ 169.90 each | |
1” Female NPT | 1” Female NPT | Brass | 0.500 psi | 10,000 psi | U1HBRMT.500SS | 1138E84016 | $ 235.84 each | |
1-1/4” Female NPT | 1-1/4” Female NPT | Brass | 0.500 psi | 10,000 psi | U1IBRMT.500SS | 1138E84017 | $ 519.45 each | |
1-1/2” Female NPT | 1-1/2” Female NPT | Brass | 0.500 psi | 10,000 psi | U1JBRMT.500SS | 1138E84018 | $ 613.75 each | |
3/8” Female NPT | 3/8” Female NPT | Brass | 1.50 psi | 10,000 psi | U1CBRMT1.50SS | 1138E84061 | $ 106.98 each | |
1/2” Female NPT | 1/2” Female NPT | Brass | 1.50 psi | 10,000 psi | U1DBRMT1.50SS | 1138E84062 | $ 126.60 each | |
3/4” Female NPT | 3/4” Female NPT | Brass | 1.50 psi | 10,000 psi | U1FBRMT1.50SS | 1138E84063 | $ 169.90 each | |
1” Female NPT | 1” Female NPT | Brass | 1.50 psi | 10,000 psi | U1HBRMT1.50SS | 1138E84064 | $ 235.84 each | |
1-1/4” Female NPT | 1-1/4” Female NPT | Brass | 1.50 psi | 10,000 psi | U1IBRMT1.50SS | 1138E84065 | $ 519.45 each | |
1-1/2” Female NPT | 1-1/2” Female NPT | Brass | 1.50 psi | 10,000 psi | U1JBRMT1.50SS | 1138E84066 | $ 613.75 each | |
3/8” Female NPT | 3/8” Female NPT | Brass | 3.50 psi | 10,000 psi | U1CBRMT3.50SS | 1138E84073 | $ 106.98 each | |
1/2” Female NPT | 1/2” Female NPT | Brass | 3.50 psi | 10,000 psi | U1DBRMT3.50SS | 1138E84074 | $ 126.60 each | |
3/4” Female NPT | 3/4” Female NPT | Brass | 3.50 psi | 10,000 psi | U1FBRMT3.50SS | 1138E84075 | $ 169.90 each | |
1” Female NPT | 1” Female NPT | Brass | 3.50 psi | 10,000 psi | U1HBRMT3.50SS | 1138E84076 | $ 235.84 each | |
1-1/4” Female NPT | 1-1/4” Female NPT | Brass | 3.50 psi | 10,000 psi | U1IBRMT3.50SS | 1138E84077 | $ 519.45 each | |
1-1/2” Female NPT | 1-1/2” Female NPT | Brass | 3.50 psi | 10,000 psi | U1JBRMT3.50SS | 1138E84078 | $ 613.75 each |