First, fine small pneumatic control valve Product Overview Haichuan Shanghai Valve Co., Ltd. of ZJSJP pneumatic membrane single-seat control valve is a multi-spring pneumatic diaphragm actuator and low flow resistance small fine control valve body composition, high and low multi-spring actuator , light weight, simple equipment. Pneumatic Diaphragm Control Valve with electric - gas valve positioner or pneumatic valve positioners, process piping can be realized automatically adjust the control fluid medium. Features: fine small pneumatic control valve body flow channel S streamlined, with a compact, light weight, sensitive, the pressure drop, valve capacity, flow characteristics of precision, easy maintenance, etc., can be used in harsh working conditions. Applicable scene: fine small pneumatic control valve film is widely used in precise control of process parameters of gas, liquid, steam and other media such as pressure, flow, temperature, level and other parameters are kept at a given value of gas. Fine small pneumatic diaphragm control valve is particularly suitable for allowing leaked a small amount of pressure before and after the valve is not and there is a certain viscosity and containing a small amount of occasions fiber media. Second, the pneumatic fine small pneumatic control valve product images small fine control valve _ZJSJP three small fine control valve pneumatic components parameters Material Body parts WCB (ZG25) CF8 (304) CF8M (316) CF3M (316L) Seat 304 304 316 316L 304 304 316 316L valve body gasket PTFE, metal graphite spiral wound gasket bonnet WCB (ZG25) CF8 (304) CF8M (316) CF3M (316L) packing PTFE, flexible graphite, registration polystyrene packing pressure cover 304 304 316 316L four fine small pneumatic control valve technical parameters nominal diameter (DN) 20 25 32 40 50 65 80 100 125 150 200 250 300 Seat diameter (dn) 20 25 32 40 50 65 80 100 125 150 200 250 300 Rated flow coefficient (KV) single-seat 6.9 11 17.6 27.5 4,469,110,176,275,440,630 sleeve 875 1250 6.3 1,016,254,063,100,160,250 360 570 850 1180 to allow pressure (MPa) 3.8 3.2 3.0 2.0 single-seater 1.8 1.5 1.4 1.0 0.7 0.6 0.5 0.3 0.1 6.4 6.4 5.2 5.2 4.6 sleeve 4.6 3.7 3.7 3.5 3.1 3.1 2.6 2.2 Nominal pressure (MPa) 1.6,2.5,4.0,6.4,10.0 rated travel (mm) 16 25 40 60 100 Actuator Type ZHA / B-22 ZHA / B-23 ZHA / B-34 ZHA / B-45 ZHA / B-56 ??flow characteristic Equal percentage, linear form of Bolt Clamp gland packing V-type PTFE packing, V-type flexible graphite packing spool type single-block sleeve valve cover in the form of a standard type (-17 ~ + 250 ℃), high temperature (+ 250 ~ + 450 ℃), low temperature (-40 to -196 ℃), bellows seal type (-40 ~ + 350 ℃)