Spring Loaded Check Valve



A spring loaded check valve incorporates a spring to assist in closing the check valve. They are designed to close prior to fluid flow reversal avoiding shock or water hammer in a process system. All valves we manufacture are poppet check valves. Please refer to the list below to find your desired style.

Style F1, F6, FP

The Flange Insert Valve can be installed in any ANSI class 150, 300, or 600 flanged connection in the system, horizontally or vertically with no alterations to existing pipe necessary. Simply spread a flanged joint, insert the valve, and tighten the bolts. View More

Style FIVPlastic Wafer Poppet

Style WV

The Wafer Insert valve has a "drop-in" body style that fits inside the bolt circle between two mating ANSI flanges.  Quick and easy installations and removal in rigid piping applications.  Many valves in this series meet API 594 requirements.  View More

Poppet ValveWafer

Style LP

The Lined Pipe Insert check valve is designed to fit between two flanges on most lined pipe systems.  No gaskets are required, just spread the flanges, center the valve, and bolt the flanges.  View More

Poppet Check Valve

Style SC

The Sanitary Cartridge Valve is a 316 stainless steel check valve for use in new or existing sanitary systems.  The SCV design seals on the ID of sanitary ferrules with replaceable food grade seals.  View More

Style SC

Style 3S

The 3-A Sanitary Check Valve is an all  316/316L stainless steel check valve for use in new or existing sanitary systems.  The compact 3S design fits inside a single set of ferrules with 3-A specified materials (standard is EPDM), and requires no additional space in the line.  The valve is designed to be easily disassembled and spare parts are available.   View More

Style 3SC

Style CB, TC

The Sanitary Insert Valve is an all fluoropolymer (PTFE/FEP/PFA), check valve with a 316 stainless steel spring (which can be FEP encapsulated) for use in new or existing sanitary systems.  The valve is designed to fit into grooved end clamp type fittings and replaces the gasket normally used with these fittings.  View More


Style SIV

Style B4

The Butt Weld check valve is designed for use in applications where weld joints are required.  It is machined from bar stock with butt weld ends per ASME/ANSI B16.25 for schedule 40 pipe.  View More

Style B4

Style US

The Universal Socket Weld check valve is designed for use in applications where weld joints are required. The housed design of the UN-SW allows for minimum pressure drop when a light spring setting is used.  View More

Style UN-SW

Styles U3 and U1

The Universal Low (to 3,000 psig) and High (to 10,000 psig) pressure check valves have a single piece body construction machined from bar stock.  These economical valves are designed for maximum flow with minimum pressure drop. View More UN-3 or View More UN-10.

U3 or U1 valves U1-Universal High Pressure Valve U3-Universal Low Pressure Valve

Style CN

The Connector check valve is designed for use in applications where male pipe threads are required.  The hex nipple or connector housing design allows for ease in installation either as a check valve, vacuum breaker or low-pressure relief valve.  View More

Style CON (CN)

Style BU

The Bushing check valve is compactly housed in a common reducing coupling.  It's size makes it convenient for use as a vacuum breaker or low-pressure relief valve.  View More

Style BU (BU)

Styles M1 - M8

The Mini-Check Valve is a three-piece construction check valve. The MCV is designed to work well in smaller pipe and/or tubing applications.  Its three-piece design allows for many different end connections with NPT on both ends or with NPT on one end and tubing on the other.  View More
Style MCV (M1-M8)

Style TV

The Tubing Check Valve is a three-piece construction check valve designed for use with straight metal tube.  The TCV is furnished complete with ferrules and nuts for compression tube connections. The housed design of the TCV allows for minimum pressure drop when a light spring setting is used.  View More

Style TV (TCV)

Style TF

The Tubing Check Valve-Flared is a three-piece construction check valve with 37oflared ends that conform to J. I. C. and SAE Hydraulic Standards. The housed design allows for minimal pressure drop when a light spring setting is used.  View More

Style TF (TCV-F)

Style 3S

The 3-A Sanitary Check Valve is an all  316/316L stainless steel check valve for use in new or existing sanitary systems.  The compact 3S design fits inside a single set of ferrules with 3-A specified materials (standard is EPDM), and requires no additional space in the line.  The valve is designed to be easily disassembled and spare parts are available.   View More

Insert Valves

Style F1, F6, FP

The Flange Insert Valve can be installed in any ANSI class 150, 300, or 600 flanged connection in the system, horizontally or vertically with no alterations to existing pipe necessary. Simply spread a flanged joint, insert the valve, and tighten the bolts. View More

Poppet Insert

Style SC

The Sanitary Cartridge Valve is a 316 stainless steel check valve for use in new or existing sanitary systems.  The SCV design seals on the ID of sanitary ferrules with replaceable food grade seals.  View More

Style UV

The Union Insert Valve is designed to be inserted into most ground joint unions.  It provides the most simple and economical way to install a check valve into a system.  View More

Style UIV

Style SI

The Straight Sided Insert valve is a thread-less check valve designed for use in any cavity where a check valve is needed and threads are not desired.  View More

Style SSI

Style LP

The Lined Pipe Insert check valve is designed to fit between two flanges on most lined pipe systems.  No gaskets are required, just spread the flanges, center the valve, and bolt the flanges.  View More

Poppet Check Valve

Style WV

The Wafer Insert valve has a "drop-in" body style that fits inside the bolt circle between two mating ANSI flanges.  Quick and easy installations and removal in rigid piping applications.  Many valves in this series meet API 594 requirements.  View More

Poppet ValveWafer

Style B4

The Butt Weld check valve is designed for use in applications where weld joints are required.  It is machined from bar stock with butt weld ends per ASME/ANSI B16.25 for schedule 40 pipe.  View More

Style B4

Style HV

The Horizontal/Vertical Flanged and Drilled Valve is a one-piece cast body valve with ANSI/ASME B16.5 Class 150 flanged ends.  It is available in ANSI 150 only.  These valves are designed for use with mating ANSI class 150 flanges for maximum flow with minimum pressure drop.  View More

Style HT

The Horizontal/Vertical Flanged & Drilled-Fluoropolymer (PTFE) Lined check valve is a one-piece cast body valve with ANSI/ASME B16.5 Class 150 flanged ends.  It has a solid one-piece PTFE liner that extends over the raised face portion of the flange face to serve as the gasket.  All wetted parts are fluoropolymer (PTFE/FEP/PFA) including the FEP encapsulated Stainless Steel spring.  View More

Style US

The Universal Socket Weld check valve is designed for use in applications where weld joints are required. The housed design of the UN-SW allows for minimum pressure drop when a light spring setting is used.  View More

Style UN-SW

Styles U3 and U1

The Universal Low (to 3,000 psig) and High (to 10,000 psig) pressure check valves have a single piece body construction machined from bar stock.  These economical valves are designed for maximum flow with minimum pressure drop. View More UN-3 or View More UN-10.

U3 or U1 valves U1-Universal High Pressure Valve U3-Universal Low Pressure Valve

Styles M1 - M8

The Mini-Check Valve is a three-piece construction check valve. The MCV is designed to work well in smaller pipe and/or tubing applications.  Its three-piece design allows for many different end connections with NPT on both ends or with NPT on one end and tubing on the other.  View More
Style MCV (M1-M8)

Style CAV

The CAV series of valves are not catalog items but rather are custom designed and tailored to meet customer specific connections or valve configurations.  If you have a check valve application where our standard catalog items do not quite match what you are looking for, contact our sales department to discuss your specific needs.  View More

Style CAV