What is an Inline Check Valve?

Inline check valves utilize a check mechanism that functions in the fluid line or media pathway of a process piping system.  Oftentimes, these check valves are of a compact design allowing for space saving and/or ease of installation into an existing system. Check-All inline check valves use a spring loaded check mechanism; thereby, allowing installation in either vertical (with proper spring selection) or horizontal flow orientation allowing for even greater retrofit possibilities.

Please refer to the list below to find your desired style.

Wafer
Sanitary
Weld
Threaded
Tubing
Insert
Housed
Mini
Custom
Wafer

Style F1, F6, FP

silent check valveThe Flange Insert Check 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 WV

spring loaded check valveThe Wafer Insert Check 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

 

    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 flang. View More

 

 

 

 

 

 

Sanitary

Style SC

SanitaryThe Sanitary Cartridge Check 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 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 CB, TC

The Sanitary Insert Check 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

 

 

Weld

Style US

Universal Socket Weld Check Valve
Universal Socket Weld Check Valve

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 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

Threaded

Styles U3 and U1

The Universal Low (to 3,000 psig) and High (to 10,000 psig) pressure Check Valve have a single piece body construction machined from bar stock.  These economical valves are designed for maximum flow with minimum pressure drop. View More U3 or View More U1.

 

 

 

 

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 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

 

 

 

Styles M1 - M8

M3 valve 003

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

 

 

 

 

 

Tubing

Style TV

The Tubing Check ValveThe 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 TF

The Tubing Check Valve-FlaredThe 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

Insert

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 F1, F6, FP


The Flange Insert Check 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 SC

The Sanitary Cartridge Check 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 Check 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 SI

The Straight Sided Insert Check 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 WV

The Wafer Insert Check 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

 

 

 

 

 

 

 

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

 

 

 

Housed

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 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

poppet check valveThe 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

 

 

 

 

 

 

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 U3 or View More U1.

 

 

 

 

 

 

 

 

 

Mini

Styles M1 - M8

M3 valve 003

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

Custom

Style CAV

cavThe CAV series of Check 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