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Pneumatic Rubber Lined Diaphragm Valve

  • Price:

    Negotiable

  • minimum:

  • Total supply:

  • Delivery term:

    The date of payment from buyers deliver within days

  • seat:

    Beijing

  • Validity to:

    Long-term effective

  • Last update:

    2021-10-17 10:58

  • Browse the number:

    380

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Company Profile

Zhejiang Zhongzhi Valve Group Co., Ltd

By certification [File Integrity]

Contact：aimiliuti(Mr.)  

Email：

Telephone：

Phone：

Area：Beijing

Address：Beijing

Website：http://www.zzvalvecn.com/ http://aimiliuti.ammc88.com/

Product Details

Pneumatic Rubber Lined Diaphragm Valve is a special form of shut-off valve, which appeared in the 1920s. Its opening and closing part is a diaphragm made of soft material, which separates the inner cavity of the valve body from the inner cavity of the valve cover and the driving parts, so it is called a diaphragm valve. Its most prominent feature is that the diaphragm separates the inner cavity of the lower valve body from the inner cavity of the upper valve cover, so that the valve stem, valve clack and other parts located above the diaphragm are not corroded by the medium, and the packing seal structure is omitted, and no medium is leaked.


Specifications

Connection type: Flange

Pressure of work: 1.0Mpa

Dimension standard: GB, BS, ANSI, JIS

Working temperature: ≤80℃, ≤100℃, ≤120℃, ≤150℃

Valve Body Material: Cast Iron, Ductile Iron, WCB

Diaphragm Material: EPDM/EPDM+F46/FPM/F46/PFA

Size available: DN15-DN200

Actuator Material: Aluminium Alloy

Actuator type: double acting, single acting(spring return)

Actuator accessories: Solenoid valve, limit switch box, air regulator, positioner, quick exhaust valve, manual override


Features

The most prominent feature is that the diaphragm separates the inner cavity of the lower valve body from the inner cavity of the upper valve cover, so that the valve stem, valve clack and other parts located above the diaphragm are not corroded by the medium, and the packing seal structure is omitted, and no medium leakage occurs.


1. Diaphragm made of soft seal such as rubber or plastic has good sealing

performance. Since the diaphragm is a vulnerable part, it should be replaced regularly according to the characteristics of the medium.


2. Due to the limitation of the diaphragm material, the diaphragm valve is suitable for occasions with low pressure and relatively low temperature.


3. Diaphragm valves can be divided into six types according to the structure: house type, DC type, cut-off type, straight-through type, gate type and right-angle type; the connection form is usually flange connection; according to the driving mode, it can be divided into manual, electric and pneumatic There are three types, of which pneumatic drive is divided into three types: normally open, normally closed and reciprocating.


4. Generally, it is not suitable to be used in pipelines where the temperature is higher than 60 degrees and transporting organic solvents and strong oxidizing media, and it is also not suitable to be used in higher pressure pipelines. The diaphragm valve is a fluid of 1.3×10-5～2.5X106Pa. A valve used to open or block airflow in the system.


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