marsh bellofram精密调压阀78 marsh bellofram 精密调压阀 Type 78 High Flow Precision Air Type 78 High Flow Precision Air Regulator Bellofram Rolling Diaphragm Provides Low-Friction, Long Life Service Available in 3/8 ¨, 1/2 ¨, 3/4 ¨ and 1¨ NPT and BSPT Output Gauge Ports are 1/4 ¨ NPT Options: Low-bleed, Non-relieving, Tamper resistant cover, Square-head adjustment, T-handle adjustment, Epoxy Paint, Tapped Supply Gauge Port, and Tapped Exhaust Mounting Brackets and Repair Kits Available Output Ranges are 0-2, 0-10, 0-30, 0-60, 0-125 psig 0-0.1, 0-0.7, 0-2.1, 0-4.1, 0-8.6 BAR Maximum Supply Pressure is Rated at 400 psig / 27.6 BAR Flow rates of well over 200 SCFM Product Detail: The Type 78 regulator is specifically designed for applications that require large flow capability and accurate pressure control. This regulator offers low droop, high accuracy, and fine adjustment sensitivity. The use of a Bellofram rolling diaphragm provides greater sensitivity and improved accuracy. The Type 78 offers a balanced pintle, which minimizes output pressure changes caused by fluctuations in supply pressure. Careful design and quality materials throughout assure long, trouble-free operation. The rugged die-cast zinc and aluminum housings are pressure tested to assure safe operation, and are designed to withstand harsh and abusive environments. This durability is attributed to a chemical conversion coating of all cast components and a vinyl paint finish. With a maximum supply pressure of up to 400 psig/27.6 BAR and output ranges up to 125 psig/8.6 BAR, the Type 78 can achieve flow rates of well over 200 SCFM. It can be panel or pipe mounted. Operation: Marsh Bellofram’s Type 78 is a direct acting, diaphragm-operated regulator. Once set to a desired output pressure, this precision regulator maintains the setting permanently. The range spring, which has been compressed by the adjustment knob, causes the pintle to move downwa