China Self-Operated Pressure Differential Pressure Conbined Regualtion Control Valve

Self-operated Pressure and Differential Pressure Conbined Control Valve
(ZZYVP)

Summary:
Self-operated pressure and differential pressure combination valve has no additional energy, and it can work in the place without electricity and gas, so it is convenient and energy saving. It is mainly composed of pressure valve, differential pressure valve, two actuators and two sets of pressure spring. It is suitable for non-corrosive liquids, gases and steam, in the system pipe pressure or differential pressure control. Pressure segmentation range is fine and cross each other, the adjustment accuracy is high, according to the principle of priority action, it can not control two parameters at the same time.

Self-operated Pressure and Differential Pressure Conbined Control ValveModelZZYVPSizeDN15~150mmStructure FormStraight-through CastingTypeBody MaterialCast steel(WCB);
Stainless Steel(304;316;316L)Norminal PressurePN1.6; PN4.0MPaWorking Temperature≤150ºCApplication RangeNon-corrosive liquids, gases and steam.FeatureThe multiple combination control can be achieved through the combination parts.

Body SpecificationNominal DiameterDN15~150mmFlange StandardANSI,JIS,GB,JB,DINBody MaterialCast steel(ZG230-450)
Cast stainless steel(ZGICrl18Ni9Ti,ZGICr18Ni12Mo2Ti)Plug MaterialStainless Steel(metal-to-metal)
Stainless steel inlaid with rubber ring(Soft Seal)Pressure BalanceStainless Steel Bellows(DN15-125)
Balance Diaphragm(DN150-250)

Temperature Range of Control ValveAllowable Working TemperatureNominal diameter DN15-125mmDN150-250mm
Sealing Type
metal-to-metal≤150ºC≤140ºCCooling tank≤200ºCCooling tank&Lengthen≤200ºCCooling tank&Heat dissipation≤350ºCCooling tank&Lengthen≤350ºCSoft Seal≤150ºC

Features:
Self-operated pressure and differential pressure combination valve can be a number of combination control. It requires no external control instrumentation. The system is simple and low-cost, and the pressure setting value can be continuously set during operation. The pressure balancing mechanism is adopted to make the regulating valve more responsive and control more accurate.
Company Introduction:
Zhitai Valve Co., Ltd is a member of Valve Association of Longwan District, is located in Longwan Central Industrial Zone, Wenzhou City. It'a professional technology company integrated with development, manufacturing, sales, and after-sales services of valve actuators and and self-controlled valves. Presently, our main products include: pneumatic actuators, pneumatic valves and pneumatic control valves; electric actuators, electeic valves and eletric control valves; automatic control products. Our products are widely applied in natural gas, electricity, petroleum, chemical, metallurgical, construction, pharmacy, paper, printing and dying. Zhitai series actuators and valves are the best choice for automatic fluid control engineering and equipment manufacturing. We sincerely welcome customers from home and abrode to visit us for supervision, communication and cooperation. It's a great honor for us to cooperate with you.