Product Description

Body Sizes and End Connection Styles Type 289A: 1/4 FNPT Type 289H: 1, 2 FNPT Type 289HH: 1 FNPT Type 289L: 3/4, 1 FNPT Maximum Allowable Relief (Inlet) Pressure 100 psig / 6,9 bar Relief Set Pressure Ranges Type 289A - Zinc: 3 to 13 psi / 0,21 to 0,90 bar 11 to 22 psi / 0,76 to 1,5 bar Type 289H - Cast iron: 7 to 18-inches w.c. / 17 to 45 mbar 0.5 to 2.25 psi / 0,03 to 0,15 bar 1.75 to 7 psi / 0,12 to 0,48 bar 4 to 10 psi / 0,28 to 0,69 bar Type 289H - Aluminum: 1 to 4.5 psi / 0,07 to 0,31 bar 4 to 15 psi / 0,28 to 1,0 bar 10 to 20 psi / 0,69 to 1,4 bar 15 to 50 psi / 1,0 to 3,5 bar Type 289HH - Aluminum: 45 to 75 psi / 3,1 to 5,2 bar Type 289L - Aluminum: 12 to 40-inches w.c. / 30 to 99 mbar 10 to 18-inches w.c. / 25 to 45 mbar Pressure Registration Internal Temperature Capabilities Nitrile (NBR) and Neoprene (CR) Elastomers: -20° to 150°F / -29° to 66°C Fluorocarbon (FKM): 20° to 300°F / -7° to 149°C Available with Types 289H and 289HH only Approximate Weights Type 289A and 289U: 0.75 Pounds / 0,3 kg Type 289H: 1 NPT - 4 Pounds / 2 kg, 2 NPT - 15 Pounds / 7 kg Type 289HH: 4 Pounds / 2 kg Type 289L: 15 Pounds / 7 kg