Spring Check Valve PN 10/16

Spring Check Valve PN 10/16 is a spring-assisted check valve designed to prevent reverse flow in pipeline systems.

This valve type is used in industrial, constructional, water, wastewater, drinking water, agricultural and non-corrosive liquid applications with a maximum operating temperature of 80°C. It is also used where reverse flow control and water hammer reduction are required, especially in pumping stations.

Technical Overview

The valve uses a spring-assisted closing system. The spring helps the closing disc return to its sealing position after forward flow decreases or stops.

According to the product information, the valve requires a minimum opening pressure of 0.1 bar and a minimum sealing pressure of 0.5 bar.

Function

Spring Check Valve PN 10/16 is used to allow flow in one direction and prevent reverse flow.

The valve is selected where the system requires non-return operation in liquid lines, especially where flow reversal or water hammer may be a concern.

Applications

• Industrial installations
• Constructional installations
• Water systems
• Wastewater systems
• Drinking water lines
• Agricultural irrigation systems
• Non-corrosive liquid lines up to 80°C
• Pumping stations

Suction Valve Use

The product information also mentions that the spring check valve can be used as a suction valve where water is extracted from a lower level by a ground pump.

Design Features

• Spring-assisted closing system
• Designed for non-return flow operation
• Minimum opening pressure of 0.1 bar
• Minimum sealing pressure of 0.5 bar
• Trim and shaft sealing arrangement designed by Ardestan Foundry Industries
• Flow direction should be checked during installation according to the arrow on the valve body

Standards

• Flange drilling and flange dimensions according to EN1092-2
• Other flange standards available upon request
• Face-to-face dimension according to EN558-1 / DIN3202-1
• Spring material according to DIN17440
• Shaft material according to DIN17440
• Hydrostatic test according to ISO5208

Materials

For PN10/16, the body material is ductile iron EN1563 GJS400.

The spring is made of stainless steel according to DIN17440.

The shaft is made of stainless steel 1.4021 according to DIN17440.

The closing disc is listed as GJS400 and EPDM.

The O-ring material is NBR.

The sealing ring is listed as 1.4021.

The bushing is listed as brass.

Installation Notes

The valve should be installed according to the flow direction arrow on the valve body.

The product information notes that the valve should not be installed in the reverse direction.

A sealing gasket is required at the inlet and outlet flange connections.

The bolts should be tightened in a cross pattern to help avoid flange distortion.

Operation and Maintenance Notes

The valve operation should be checked periodically.

Standard galvanized bolts and nuts with suitable length and diameter should be used.

Technical Summary

Spring Check Valve PN 10/16 is a spring-assisted non-return valve for preventing reverse flow in liquid pipeline systems. It is used in water, wastewater, drinking water, agricultural and non-corrosive liquid applications up to 80°C, especially where reverse flow control and water hammer reduction are required. The available product information mentions EN1092-2 flange drilling, EN558-1 / DIN3202-1 face-to-face dimensions, DIN17440 spring and shaft material, ductile iron GJS400 body for PN10/16 and hydrostatic testing according to ISO5208.

Related category: Check Valves
Related product: Ball Check Valve PN 10/16
Related product: Swing Check Valve PN10-16
Related glossary: What Is PN in Valves?