Automatic Control Valves

A500 Pressure Relief / Sustaining Valve

Maintains minimum upstream pressure under varying demand.

Product Description

The A500 operates as a pressure sustaining valve, holding a minimum upstream pressure to ensure adequate supply pressure is maintained at all times. It can equally function as a pressure relief valve, opening to discharge excess pressure when upstream pressure exceeds a set limit. Commonly installed at pump stations, reservoir outlets and district meter areas.

Specifications

Size rangeDN50–DN600
PressurePN16 / PN25
MaterialDuctile iron body, EPDM diaphragm, stainless pilot
ConnectionFlanged PN16/PN25

Approvals & Certifications

WRASWater Regulations Advisory Scheme: UK approval for use in drinking water systemsISO 9001International quality management system certification

Standards

EN 1074-5

Typical Applications

  • Pressure sustaining
  • Pressure relief
  • Pump station outlet
  • Reservoir outlet
A500 Pressure Relief / Sustaining Valve

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Send us your size, pressure rating and quantity and we will respond with pricing and full technical documentation, typically within one working day.

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View all product datasheets

At a glance

Sizes
DN50–DN600
Pressure
PN16 / PN25
Connection
Flanged PN16/PN25
Download Datasheet (PDF)