美国进口精密调压阀减压阀

700型精密高流量调压阀 

330/340型仪表空气过滤调压阀

Type 300 Instrument Air Filter Regulator Series

700型精密高流量调压阀

Type 700 High Flow Pressure Regulator

700BP型精密背压调压阀

Type 700BP Precision Back Pressure Regulator

背压调节阀阀前端压力达到设定压力后，背压阀打开，使背压阀前端的压力保持在恒定的设定压力，且不受背压阀出口压力的影响。


产品说明

The Type-700BP Back Pressure Regulator is a high flow, highly accurate pneumatic relief valve with an adjustable set point. It'sprimary function is to provide protection against over pressurization in the downstream portion of a pneumatic system. This precision unit is capable of handling flows up to 50 SCFM. A rolling diaphragm provides the sensitivity that causes the Type-700BP to vent to atmosphere in response to the slightest upstream changes. FEATURES ? SENSITIVITY - Provides quick response to controlled system pressure variation. ? HIGH FLOW CAPACITY - Flows up to 50 SCFM (depending on set point pressure and port size). ? COMPENSATING FLOW CONTROL - Venturi type velocitypressure tube adjusts main control valve opening in accordance with velocity pressure variations of flow from controlled system. ? ON-LINE MAINTENANCE - Unit can be disassembled and serviced without removing from the air line. APPLICATIONS The Type-700BP is used in place of a standard relief valve to provide protection against excessive build-up in supply pressure lines to instruments and other sensitive control devices. The most common application is to control the air pressure in a system supplied by a compressor. Used in conjunction with a diaphragm operated inlet restricting valve and a bleed orifice, the Back Pressure regulator relieves excess compressor pressure while activating the intake restricting valve. When the regulator shuts off, the down-stream air vents through the bleed orifice allowing the restricting valve to open.  

700BP系列产品简介：
精密背压式调压阀700BP是一种高流量、高精度气动安全阀，设**可调。它的基本功能是对气动系统的下游压力进行过压保护,该减压阀流量处理能力高达50SCFM。上游微小的压力变化滚动隔膜的灵敏度会引起该减压阀向大气中排放。
产品特点：
文氏对控制系统压力变化反应迅速
大流量：流量高达50 SCFM (依设**压力和接口尺寸而定)
流量补偿控制：文氏流速压力管根据控制系统流量流速压力变化调节主控阀开启进行流量补偿
在线维护：不用拆卸供气管线就可方便维护
应用：
适用于供压管线到仪表和其它灵敏控制仪中的过压保护。较普通的应用是空压机供压系统中的介质压力控制。用隔膜式入口节流阀和排气孔，背压减压阀释放过多的空压机压力，同时关闭入口节流阀。当背压减压阀关闭时，下游介质通过排放孔释放并开启该节流阀。
技术参数
型号	

TYPE 700BP

较大流量
	

80 SCFM (85 m3/小时) 根据设**压力和接口尺寸而定

灵敏度
	

1/8〞(3.2mm)水柱

较大供压
	

250 PSIG (1750Kpa)

工艺连接尺寸
	

1/4〞NPT; 1/2〞NPT; 3/8〞NPT

材质
	

铸合金铝外加烤瓷

耐温
	

0~66℃