Threaded Check Valves

Threaded Spring Check Valves

A threaded spring check valve is a non-return valve whose disc is pressed onto its seat by a spring and opens only when flow pressure overcomes the spring. Thanks to the spring it closes as soon as flow stops and works horizontally, vertically or at an angle.

On stainless models the body is AISI 304 in PN16 class; brass-bodied models are also available. They are used at pump outlets, on compressed air and water lines, in heating circuits and at equipment inlets.

Any positioninstallation

Springfast closing

AISI 304stainless body

PN16pressure class (stainless)

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Main Applications

Pump discharge lines
Compressed air and compressor lines
Heating and hot water circuits
Vertical pipe runs
Device and equipment inlets

Technical Data

Type	Spring disc check valve
Connection	Threaded
Thread size	By model (group ¼” – 4″)
Pressure class	PN16 (stainless, from product names)
Body	Stainless AISI 304 or brass
Disc and spring	By model
Sealing	By model
Installation	Any position

Material Options

Part	Stainless spring	Brass spring
Body	AISI 304	Brass
Disc	By model	By model
Spring	By model	By model
Seal	By model	By model

Which material? A spring check valve needs a certain pressure difference to open; on very low-pressure or gravity-flow lines check the cracking pressure in the datasheet.

Advantages

Any Position

Horizontal, vertical, angled

Fast Closing

Less water hammer

Two Materials

Stainless and brass

Compact

Short threaded body

Construction and Design Features

Threaded stainless or brass body
Spring-loaded disc
Disc guide
Female threaded ends

Write the thread size, medium and orientation; we will confirm the right spring check valve with stock details.

How to Choose?

Choose the materialUse stainless for aggressive or hygienic media.
Set the sizeWrite the pipe thread size.
Check the cracking pressureSee the datasheet value on low-pressure lines.
Decide the orientationWorks in any position; follow the flow arrow.

Complementary Products

Stainless Steel Threaded Fittings Brass Fittings Centrifugal Pumps Pneumatic Equipment Pressure Gauges Y-Type Strainers

Why ORFA?

Since 1985Over 40 years of experience in supplying industrial piping equipment.

Technical ConsultancyStainless or brass spring check valve selection by medium.

Delivery from StockCommon spring check valve sizes shipped from stock.

Compatibility CheckWe check cracking pressure against line conditions.

In This Group

Other Threaded Check Valves

Threaded Swing Check Valves

Threaded swing check valves stop reverse flow with a hinged disc and have threaded ends.

Details →

Threaded Cast Iron Check Valves

Threaded cast iron check valves are check valves with a cast body and threaded ends that prevent reverse flow.

Details →

Threaded Ball Check Valves

Threaded ball check valves stop reverse flow with a ball inside the body and have threaded ends.

Details →

Threaded Horizontal Check Valves

Threaded horizontal check valves prevent reverse flow on horizontal lines and have threaded ends.

Details →

PVC-U Check Valves

PVC-U check valves are corrosion-resistant plastic check valves with a rigid PVC body that prevent reverse flow.

Details →

Our Products

Our Threaded Spring Check Valves

ORFA supplies threaded spring check valves in a range of pressure classes, sizes and connection types to suit your application. Descriptions, technical specifications, materials and dimension tables are available on each detail page.