Griffco Valve HP-Series User Manual

Griffco Valve Inc.

6010 N. Bailey Ave., Suite 1B
Amherst, NY 14226
Phone: [phone]
Fax: [phone]

HP-Series
Instruction
Manual

High Pressure Relief Valves

Call: 1 - 800 - GRIFFCO Website: www griffcovalve.com

INSG-2002-R0513 Revision Date: 05/06/13

INTRODUCTION

Y-STRAINER

GRIFFCO

CYLINDER

GRIFFCO BACK

TYPICAL INSTALLATION

Griffco piston / diaphragm pressure relief

valves are designed to protect chemical feed
systems from over pressure damage caused
by defective equipment or a blockage in the
chemical feed line. Robust construction
ensures reliability in the rigorous service of
municipal and industrial applications. Wetted
materials include 316 SS, A 20 and Hast. C.

Available sizes: 1/4”, 3/8”,1/2”, 3/4" and 1”

OPERATION:
Griffco high pressure relief valves operate

when the pressure in the chemical system
exceeds the preset pressure of the valve.
The piston is held against the valve seat by
an internal spring. When the preset pressure
is exceeded the piston is forced up and the
chemical flows out the relief port, to drain or
back to the chemical tank. The valves are
pre-set on request, however they are field
adjustable from 350 - 2000 psi via the
adjustment screw. The relief valve should be
set approximately 10% higher than the
system operating pressure.

HP RELIEF VALVE

INJECTION
VALVE

DRAIN

VALVE

CHEMICAL

CONTAINER

SHUT OFF VALVE

ISOLATING BALL VALVES

PRESSURE VALVE

PULSATION

DAMPENER

GRIFFCO PRESSURE

RELIEF VALVE

RELIEF PORT

CALIBRATION

CHEMICAL

FEED PUMP