Introduction

Figure 1. H280 Series Large Relief Valve

The H280 Series Internal Spring Valves can be used in the Combo Joe® relief valve manifold or as separate units on stationary tanks. When used in ASME tanks, these units have only the poppet and most of the body outside the tank. To prevent tampering, the adjusting screw and all other parts are inside the tank.

The drain deflector is furnished as standard on the H280 Series valve; a 3-inch FNPT coupling is also available for attaching a stand pipe.

Start-To-Discharge Setting
250 or 275 psig (17,2 or 19,0 bar)

Temperature Capabilities
-20° to 150°F (-29° to 66°C)

Additional Technical Data
For more technical information contact your Fisher Distributor or refer to LP-31 Equipment Buyer’s Guide.

Features

• Drain Deflector Standard
• Brass Construction
• Tamper Resistant
• UL Listed