Sizes from 1/4” to 3” Pressure To 600 Temperatures to 450º

Series 69 is an industry standard Valve for liquid relief, liquid by-pass and over protection. Series 51 and 55 are generally used where size or spacing is a factor + high pressure settings

Usages:
• Liquid relief and overprotection
• By-pass relief
• Continuous relief
• Pressure regulation
• Pumping systems, tanks and hydraulics
• Fluid lines
• Oil fields and chemical processing

Features:
• Ruggedly constructed
• Metal-to-metal/precision lapped seating
• Closed hex cap
• Factory set and sealed (can also be field adjusted)
• Variety of inlet and outlet options
• Fixed blowdown
• Closed Bonnet Design to minimize leakage

Options:
• Wheel handle
• Variety of inlet and outlets
• Stainless steel inserts for corrosive
or higher pressure protection
• Polishing and chrome plating

* PLEASE SEE CAPACITY AND SIZE CHARTS.

51, 55 & 69 Series Details

PARTS IDENTIFICATION & MATERIALS
SERIES 51, 55 & 69 DIMENSIONS • LIQUID
Series 51, 55 & 69 Capacities

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