Overview Reviews Product Description Relief Valve Diameter: 1 NPTMax Relief (Inlet): 25 psigRelief Adjustment Ranges: 0.5 to 2.25 psigHT#289H MTR Available: No289 Series 19SEP18 105 S R057743908 TAG 6390 3058298H-UA-YAG Product Videos Custom Field Product Reviews Write a Review Write a Review × Fisher Fisher Controls 289H Relief Valve 1 NPT Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Email * Review Subject * Comments *