Parker M8A-RL4A-BNT-SS-KB - Relief Valves, 6,000 PSI - R Series

Parker's R Series Relief Valves are designed such that when the upstream pressure exceeds the closing force exerted by the spring, the lower stem opens, permitting flow through the valve. Pressures range from 10 PSI (0.7 BAR) to 6,000 PSI (413.7 BAR).
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Brand Parker
Part No. M8A-RL4A-BNT-SS-KB
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Products specifications
Attribute nameAttribute value
Maximum Operating Pressure52 psiDivisionInstrumentation Products Division
Connection 1 SizeTwo Ferrule Compression FittingFlow Coefficient0.75 Cv
Cracking Pressure25 - 50 psiMinimum Operating Temperature-30 °F
Packing MaterialNitrile RubberActuation TypeStandard
Materials of Construction316 Stainless SteelMaximum Operating Temperature225 °F
Back-Up Washer MaterialPTFEConnection Size8 mm
Connection 2 SizeTwo Ferrule Compression FittingConnection Size 28 mm
Connection Size8 mmConnection 1 StyleTwo Ferrule Compression Fitting
Connection 2 StyleTwo Ferrule Compression FittingPacking MaterialNitrile Rubber
Material316 Stainless SteelActuationStandard
Cracking Pressure (psi)25 - 50
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