Stainless Steel Spring Check Valve

The stainless steel spring check valve is an automatic backflow prevention valve that uses the pressure of the medium to control the opening and closing of the valve disc. It remains closed under normal conditions, and when the inlet pressure is lower than the outlet pressure, the spring pushes the valve disc to seal, effectively blocking reverse flow. The 3 piece spring check valve is specifically designed for vertical pipelines and must be installed vertically.

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The stainless steel spring check valve is an automatic backflow prevention valve that uses the pressure of the medium to control the opening and closing of the valve disc. It remains closed under normal conditions, and when the inlet pressure is lower than the outlet pressure, the spring pushes the valve disc to seal, effectively blocking reverse flow. The 3 piece spring check valve is specifically designed for vertical pipelines and must be installed vertically.

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Application Areas of the 3PC vertical check valve

Petrochemical Industry: Prevents backflow of pipeline media, ensuring equipment safety.

Water Treatment Systems: Avoids water backflow when pumps stop, maintaining water quality stability.

Municipal Water Supply: Blocks wastewater backflow, ensuring the safety of drinking water.

Functions of Stainless steel spring check valve

3 piece spring check valve Widely Application

High Safety

Automatically prevents backflow, avoiding damage to pipelines and equipment, ensuring the safe operation of fluid transmission systems.

Reliability

With a simple structure, easy operation, low maintenance costs, and good sealing performance, it can run stably for a long time.

Wide Applicability

Suitable for a variety of media such as water, oil, and gas, and can adapt to different temperature and pressure conditions.

Short Valve Disc Stroke

Highly sensitive, significantly reducing the valve disc closing time, effectively reducing water hammer pressure in 3 piece inline check valves.

Selling Points of Stainless steel spring check valve

Compact Structure

The 3PC vertical check valve has a compact structure, low cost, and small space requirement, making it suitable for installations with limited space.

Easy Operation

The valve disc of the Stainless steel spring check valve opens and closes flexibly, is easy to operate, and requires no additional power source.

Good Sealing Performance

The valve disc and valve seat use metal or elastic sealing structures, providing excellent sealing performance and effectively preventing medium leakage.

Reliable Use

With a simple structure, good sealing performance, and high reliability, it can run stably for a long time.

Check Valve Specifications

● Product Type: Stainless steel spring check valve

● Size: 1/2 inch - 2 inches (DN15-DN50)

● Material: SS304, SS316

● Thread Standards: ASME B1.20.1, BS21, DIN2999, ISO228-1, JIS B0203, ISO7-1

● Connection Type: Internal thread

● Pressure Rating: 200 PSI

● Temperature Range: -29°C to +240°C

● Applications: Common pipelines for steam, air, water, oil, gases (excluding flammable or toxic gases).

● Design Standard: API 602

● Process: Lost-wax casting

● Flow: Full port

Dimension of Stainless Steel Spring Check Valve

Stainless steel spring check valve drawing

Size	φd mm	L mm	H mm
1/2"	15	76	27
3/4"	20	80	33
1"	25	93	40
11/4"	32	103	48.5
11/2"	40	121	55
2"	50	130	76

NO.	Parts	Material	Parts
1	Body	CF8M	CF8
2	Gland	CF8M	CF8
3	Bonnet Gasket	CPTFE
4	Bonnet Gasket	CPTFE
5	Disc	CF8M	CF8
6	Spring Washer	SS304
7	Nut	A2-70
8	Stud	F304
9	Spring	304	316