Specification: Adjustable Flow Rate: 0-30 GPM Internal Adjustable Relief Valve (preset to 1500 PSI) Cast Iron Body Buna N O-Ring Seals Port Size: 3/4” NPT Max Working Pressure: 3000 PSI Replaces: Brand FCR51-3/4 / PFCR51-3/4 Description: Relief Valve Operation: Comes preset at 1500 PSI Relief valve can be adjusted anywhere from 500 PSI to 3000 PSI Remove acorn nut to adjust pressure Turn set screw clock wise to increase pressure setting One complete turn of set screw increases/decreases pressure by 300 PSI EX Port must be plumbed back to tank for relief valve to operate .
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