China Pneumatic Low Temperature Diaphragm Control Valve

Pneumatic Low Temperature Diaphragm Control Valve(ZMAP)

Summary:
Pneumatic low temperature diaphragm control valve is suitable for the medium temperature and 40 ° C to 196 ° C (such as liquid oxygen, liquid nitrogen, etc.), low temperature and cryogenic occasion. It is mainly composed of mutil-springs pneumatic diaphragm actuator with a long neck to take over the body. It adopts the long neck type upper bonnet function, which causes the packing to work under the normal temperature, and reduces the external heat energy to pass in. In order to reduce transmission, the long neck adopts thin-walled structure, which has good low-temperature resistance. It is especially suitable for accurately controlling the process parameters of low-temperature gases and fluids (such as liquid oxygen and liquid xue) at a given value.

Pneumatic Low Temperature Diaphragm Control ValveModelZMAPSizeDN20~250mmStructure FormSingle Seat Type; Sleeve TypeBody MaterialCast steel(WCB);Stainless Steel
(304;316;316L)Norminal PressurePN16; PN40; PN64MPaWorking Temperature-17~-196ºCApplication RangeCryogenic gases, fluids.FeatureLong neck cover for insulation with good low temperature resistance.ActionAir closing(B)-Air failure, valve to open(FO);
Air opening(K)-Air failure, valve to close(FC)AccessoryPosilioner/Air Filtralion /Pressure Reducing Valve /Transmilter/Handwheel

Body SpecificationMannerStraight-through CastingNominal diameterDN20~250mmFlange StandardJB/T79.1-94,792-94,etc.Body MaterialCast steel; Stainless SteelWorking TemperatureLow Temperature:-60-196°C; Ultra-low temperature :-250°CBonnet TypeBolted typePacking MaterialV-type PTFE Packing; Flexible Graphite PackingStructure FormExtension Bar

Components Valve TrimPlug TypeSingle Seat type; Sleeve Type;Flow CharacteristicEqual Percentage Flow Characteristic;
Linear CharacteristicsMaterialStainless Steel; Surfacing Stellite Alloy; Titanium, etc.

Actuator SpecificationMannerZHA/B Mutil-spring Diaphragm ActuatorDiaphragm materialEPDM+N; NBR+NRange of Spring(MPa)20-100(Standard);20-60; 60-100; 40-200; 80-240Supply Pressure(MPa)140-400Air connectionRC-1/4"Environment Temperature-30-70ºCModelZHA/B-22ZHA/B-23ZHA/B-34ZHA/B-45ZHA/B-56Active Area (cm²)3503505609001400

Advantages:
As for pneumatic low temperature control valve, because the use of the site belongs to a relatively stringent working condition, the parts of the processing of strict control. Special low temperature treatment ensures that the valve s not brittle in low temperature condition, and can withstand low temperature medium impact. It is widely used in metallurgy, air separation, oxygen production, petroleum, chemical and other low temperature, cryogenic occasions.
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.