HD Fire- Pressure Gauge 90mm, 0-300PSI HD Fire- Test & Drain Valve Size: 1″ HD Fire- Test & Drain Valve Size: 1″ $ 92.66 1″ Test & Drain Valve, NPT Thread, Working Pressure 300PSI, Brass Connection, UL Listed & FM Approved. Make: HD Fire Model: HD90 Add to cart Category: Related products Quick View Quick View Potter- Electric Supervisory/Tamper Switch$ 64.68Add to cart Quick View Quick View CLA VAL- Pressure Relief Valve 55L-60$ 96.63Add to cart Quick View Quick View Potter- Electric Pressure Switch$ 62.04Add to cart