Velocity Boiler Works (Crown) 950039 Gauge 328140 751 this valve provides bi directional dead end this valve provides bi directional dead end service without the need for a downstream flange The Daikin McQuay 063338302 Transformer is a high reliability 50VA multi tap transformer engineered for integration into demanding industrial HVACR environments this dual scale dial gauge provides simultaneous 1 4" NPT rear mount readings to ensure the system operates within safe mechanical limits Contractor Grade Durability: Designed to withstand the high thermal environments of reciprocating boiler systems without calibration drift