Safety: for non-electrical occasions, there is no external energy risks Energy savings: No external energy, the use of piping, pressure regulating simplify system: No external control instruments, the system is simple, low cost, simple operation: simply rotate the adjustment setting The extension of the technical parameters of the spring to control valve operation mode U before, after D function of the control valve or safety relief U, D regulator or valve seat structure P single-seat fast opening flow characteristic M sleeve adjustable range maximum 10: 1; min. 10: 8 seal level Ⅱ, Ⅳ, Ⅵ thin film actuator (setpoint ≤6bar), piston (> 6bar) performance standard JB / T regulation accuracy ± 5% features attachment options - with a condenser (applicable to other high-temperature steam medium) body parameter nominal PN16, PN40, PN64 flange connection, (special: welded) Body material 1Cr18Ni9Ti, Cr18Ni12Mo2Ti Spool Material 1Cr18Ni9Ti, Cr18Ni12Mo2Ti, Stellite surfacing seal material PTFE, hard seal, a special high-temperature materials Bellows SS, SS304, SS316 packing PTFE, flexible graphite putter liner rubber asbestos gaskets 2Cr13, 1Cr18Ni9Ti asbestos spiral wound gasket flange standard GB9113-88, JB / T79 -94, GB2555-81 special flange ANSI, JIS, DIN C3 Group -30 ℃ ~ 150 ℃ Fluid temperature C4 group -30 ℃ ~ 180 ℃ C7 Group -30 ℃ ~ 350 ℃ - band conductor, micro-pressure regulator Q- complete cut-off solenoid valve http://www.qidongfa.com.cn/product/view/64.html sophisticated sprinkler fountain pressure solenoid valve http://www.qidongfa.com.cn/product/view/33.html www .qidongfa.com.cn