China Pneumatic Diaphragm Sleeve Control Valve

Pneumatic Diaphragm Sleeve Control Valve (ZJHM)

Summary:
ZJHM pneumatic diaphragm sleeve control valve is a kind of high performance, large capacity control valve products. It adopts sleeve guide structure, and has large guide area and good stability, which can be quickly replaced online valve internal parts. The maintenance efficiency is higher, and it can saves manpower and time. Pneumatic diaphragm sleeve control valve is widely used for its good stability and simple maintenance. Pressure flat guard spool can eliminate most of the static uneven force on the disc, and has a certain blocking effect, which can reduce the vibration caused by fluid flow. It is especially suitable for occasion about leakage requirements is not high, the valve pressure difference before and after the occasion is large.

Pneumatic Diaphragm Sleeve Control ValveModelZJHMSizeDN25~300mmStructure FormBalanced Pressure Plug TypeBody MaterialStainless Steel
(304;316;316L)Norminal PressurePN16; PN40; PN64MPaWorking Temperature -17~450ºCApplication RangePetroleum, chemical industry, electric power, metallurgy and other industries.FeatureLarge capacity, large allowable pressure difference, stable operation and simple maintenance.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 SpecificationMannerSingle Seat Casting Ball Type TypeNominal diameterDN25~300mmFlange StandardJB/T79.1-94,792-94,etc.Body MaterialCast steel; Fluorine PTFE(F46)Working Temperature Standard Type: -40~230ºC;
Radiating Type: 230~450ºC;
Low Temperature:-60~196ºC;
Bellows Seal Type: -40~350ºCBonnet TypeBolted typePacking MaterialV-type PTFE Packing;PTFE+Graphite packing;Asbestos Textile Packing;
Graphite Packing.Structure FormSleeve Type

Components Valve TrimPlug TypeBalanced Pressure Plug TypeFlow CharacteristicLinear Characteristics;
Equip Percentage CharacteristicsPlug MaterialStainless Steel; Surfacing Stellite Alloy; Titanium, etc.

Actuator SpecificationMannerZHA/B Mutil-spring Diaphragm ActuatorModelZHA/B-11Diaphragm 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)3503505609001400Stroke(mm)10,16254040,60100

Advantages:
1. Adopt balanced spool, unbalanced force, large pressure difference and stable operation.
2. Large spool guiding surface can improve the oscillation caused by eddy current and impact and reduce damage.
3. The noise is about 10dB lower than that of ordinary single or double blocks.
4. Simple structure, easy installation and maintenance.
Principle:
Pneumatic diaphragm sleeve control valve use electrical and pneumatic valve positioner, powered by electrical and compressed air, and receives the industrial automatic control input (0 to 10 mA, or 4-20 mA DC) direct current (DC) related signal, and with the aid of a series of components, automatic control valve opening, so as to achieve the fluid pressure in the pipeline, the temperature, the meteor, liquid level and other process parameters of continuous adjustment.
The flow passage of pneumatic diaphragm sleeve control valve is S streamline. The overall work is smooth, allowing large pressure difference, flow specific accurate, low noise and other characteristics. It is especially suitable for large flow, valve before and after the pressure difference is large, leakage requirements are not high in the workplace.
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.