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Adjustable Relief Valves

Adjustable Relief Valves

Install these relief valves to protect systems, lines, and equipment from pressure extremes. They open at a preset pressure to divert a portion of fluid from the main line into a separate line to keep the system pressure from rising. You can easily adjust the pressure at which the valve opens.

General Purpose

Use these valves for pressure relief in a wide range of fluid systems. Simply remove the hex cap to adjust the pressure setting for different applications.

Bronze Body — Bronze Disc

12 in Inlet — NPT Connection

34 in Inlet — NPT Connection

1 in Inlet — NPT Connection

1 14 in Inlet — NPT Connection

1 12 in Inlet — NPT Connection

2 in Inlet — NPT Connection

Bronze Body — Stainless Steel Disc

34 in Inlet — NPT Connection

1 in Inlet — NPT Connection

Easy Adjustment Liquid Relief

Quickly adjust the pressure setting using the handwheel.

Bronze Body — Bronze

14 in Inlet — NPT Connection

38 in Inlet — NPT Connection

12 in Inlet — NPT Connection

34 in Inlet — NPT Connection

1 in Inlet — NPT Connection

1 14 in Inlet — NPT Connection

1 12 in Inlet — NPT Connection

2 in Inlet — NPT Connection

2 12 in Inlet — NPT Connection

Back Pressure

Maintain a preset inlet pressure regardless of system variations to protect pumps and hydraulic systems. A hex cap helps prevent tampering with the pressure adjustment.

Bronze Body — Metal Disc

NPT Connection

Bronze Body — Stainless Steel Disc

NPT Connection

Cast Iron Body — Stainless Steel Disc

NPT Connection

Acid & Corrosive Environments

These valves can be used with acidic and corrosive fluids, since no metal parts come into contact with liquid. They are designed for low maintenance and are easy to adjust.

PVC Body — PTFE Disc

NPT Connection

PVC Body — Viton/FKM Disc

NPT Connection

Polypropylene Body — Viton/FKM Disc

NPT Connection

Anti-Siphon

Help prevent gravity-induced siphoning through a pump. These valves only open when the pump is running. They will also reduce the possibility of overpressure damage to vessels and pipe.

PVC Body — PTFE Disc

NPT Connection

Fire Protection Systems

Reduce the risk of overpressure damage to your fire protection system caused by line surge or thermal expansion.

Brass Body — Buna-N Disc

NPT Connection