Pressure restricting angle valve (Spring clip)

Pressure Restricting Angle Valve (Spring Clip) is an angle valve with integrated pressure-limiting functionality, which achieves active adjustment and restriction of medium pressure in pipeline systems via a built-in spring clip structure. By driving the valve disc through spring force, it limits or regulates flow to protect downstream equipment (e.g., pumps, instruments, valves) from overpressure damage. Combining the compact form factor of an angle valve with pressure regulation capabilities, this product is widely used in industrial scenarios requiring precise pressure control.

• Main Material：Brass / Stainless Steel / Cast Iron
• Connection Method：Thread (NPT 1/2"~2", BSP G1/2"~G2"), Flange (ANSI 150, DIN PN16/PN25)
• Nominal Diameter (DN)：15mm (1/2") ~ 50mm (2")
• Applicable Medium：Water, Oil, Compressed Air, Natural Gas
• Maximum Working Pressure (PSW)：1.6 MPa ~ 16 MPa
• Set Pressure Range (Pset)：0.1 MPa ~ 8 MPa
• Flow Coefficient (Cv/Kv) ：Cv=0.5~15
• Temperature Range：-20℃ ~ 150℃ (Nitrile Rubber Seal); -40℃ ~ 200℃ (Fluororubber Seal)

Product category:

gate valve

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Product Details

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Product Formation

The Pressure Restricting Angle Valve (Spring Clip) integrates two essential functions: it works as a shut-off valve for complete water flow cutoff, and also serves as a field-adjustable flow throttling valve. Specifically engineered to reduce downstream water pressure under flowing conditions, it effectively prevents overpressure damage to downstream pipes, hoses, or end-use equipment (e.g., sprinklers, faucets).​

Equipped with a detachable spring clip, the valve uses this component to control flow and pressure—when the spring clip is installed, it maintains stable restricted pressure; when full water flow is required (such as for emergency water supply or system flushing), the spring clip can be easily removed without tools, enabling immediate maximum flow. Its simple yet reliable design makes it suitable for commercial, residential, and light industrial water supply systems.

KEY WORDS： Spring-loaded pressure restricting angle valve，Overpressure protection angle valve，Spring clip angle valve，Spring clip pressure reducing valve , China, manufacturers, suppliers, wholesale, factory.

Other Classifed Products：

Fire Hose Categories, Fire Sprinkler System, Fire Protection Valve , Fire Hose Reel&Cabinet , Fire Foam Equipment，Fire Nozzle and Fire Monitor , Fire Hydrant , UL/FM Fire Fighting Equipment , Brass Valve Categories , Fire Extinguisher Series .

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Features and Specification

Featuring an angle-type structural design, the fluid only needs one direction change to complete pressure regulation, occupying less pipeline space compared to straight-through valves.
The built-in spring clip directly drives the valve disc, enabling rapid response without complex transmission mechanisms.
The spring clip adjusts the set pressure via compression (e.g., rotating the adjustment nut), allowing quick on-site pressure threshold adjustments without disassembling the valve or using special tools—flexible and convenient.
Compatible with multiple media such as water, oil, compressed air, and natural gas, it offers high versatility for different application scenarios.
The spring’s high fatigue strength (≥10,000 cycles) ensures long-term stable operation.
Routine maintenance only requires checking the spring condition and seal wear; replacing the diaphragm or spring clip is simple to perform without fully disassembling the valve, reducing downtime and maintenance costs.

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Product Parameter

Size	Pattern	Outlet
1 - 1/2"	Angle	1 - 1/2"NH
1 - 1/2"	Angle	1 - 1/2"NPT
2 - 1/2"	Angle	2 - 1/2"NH
2 - 1/2"	Angle	2 - 1/2"NPT

Main Material	Brass / Stainless Steel / Cast Iron
Connection Method	Thread (NPT 1/2"~2", BSP G1/2"~G2"), Flange (ANSI 150, DIN PN16/PN25)
Nominal Diameter (DN)	15mm (1/2") ~ 50mm (2")
Applicable Medium	Water, Oil, Compressed Air, Natural Gas
Maximum Working Pressure (PSW)	1.6 MPa ~ 16 MPa
Set Pressure Range (Pset)	0.1 MPa ~ 8 MPa
Flow Coefficient (Cv/Kv)	Cv=0.5~15
Temperature Range	-20℃ ~ 150℃ (Nitrile Rubber Seal); -40℃ ~ 200℃ (Fluororubber Seal)

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Notes
1. 1-1/2″ valve settings range from 1 to 15, used to restrict outlet residual pressure 65 ~ 100 psi at 100 gpm for Class II system.
2. 2-1/2″ valve settings range from 1 to 20, used to restrict outlet residual pressure 100 ~ 175 psi at 250 gpm for Class I and Class III systems.
3. The working pressure is 175 psi by UL listed, and 300 psi by FM approved.

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A; With over 15 years of experience in the fire protection industry, our company has professional technical personnel and many well-known partners in the domestic market. We offer favorable prices and guarantee quality, having passed multiple certifications!

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