Product Description
Introduction
Pneumatic diaphragm valve is a special form of shut-off valve. The 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 bonnet and the driving parts. It is suitable for two-position adjustment, throttling, Channel necking, low noise, cavitation, and small operating torque.
Working principle
The working principle of the pneumatic diaphragm valve is to clamp a set of thin hemispherical metal films in the valve body as a barrier between the valve stem and the fluid. The valve closing is achieved by pressing the valve disc on the valve seat by the stem head and the metal film. The valve is opened by an internal spring. When the valve stem is lifted out of contact with the membrane, the valve disc is lifted.
Features
1. The valve stem, valve clack and other parts above the diaphragm are not corroded by the medium and will not cause medium leakage.
2. The diaphragm made of soft seals such as rubber or plastic has good sealing performance;
3. The flexible diaphragm closes reliably, and even the dirty liquid can be cut off well.
Major Specification
| Nominal size |
1/2"~8" |
| Nominal pressure |
Class150 |
| Standard: |
ASME B16.34, BS5156 |
| Body material |
WCB, CF8, CF8M, CF8C,ductile iron |
| End connection |
FF, RF |
| Operation |
weir type, Y type |
Product Parameters
Company Profile
Jitai Valve Group is a genuine valve manufacturer.
- 7000-sqm factory
- 100 employees
- 5+ senior engineers
- 30+ design patents
- 2 million sets of valves delivered
- 20 million USD annual revenue
Since 1988, we have been expert in manufacturing a wide scope of industrial valves including:
- Gate valves
- Globe valves
- Check valves
- Ball valves
- Butterfly valves
- API valves
- Steam valves
- High pressure valves
- High temperature valves
- Power Plant valves
Our Advantages
- Heavy-duty valve expert with proven expertise in harsh environment;
- Stringent quality control and traceable reports to provide zero-defect products;
- Rugged and durable configuration according to API, ASME, BS, JIS, EN standards;
- All kinds of UG, PRO/E, Solidworks software simulations ensure the efficiency and robustness for tailored components;
- Complete BV report can be downloaded on our page About us .
FAQ
1.Q:Are you are a trading company or manufacturer?
A:We are a manufacturer with 7000-sqm factory and 100 employees.
2.Q: Can you provide the assembly drawing for confirmation ?
A: Yes, we can give the relavant drawing within 24 hours.
3.Q: Can you do non destructive test for valve components ?
A: Yes, we can perform radiographic testing, penetration testing, ultrasonic testing, magnetic particle testing, etc
4.Q: How can I vist you when I am in China?
A: We are near the Wenzhou Airport. If you take a plane, it takes 2 hours to reach our factory from Shanghai, 2 hours from Guangzhou, 3 hours from Beijing.
5.Q: Can we take sample for quality check?
A: Definitely. You can advise the model number and we will prepare the sample within 7 days.
6.Q: How can I become your distributor or agent?
A: You can send your company profile and reference list to our sales manager.
7.Q: Can you help with site maintenance and commissioning?
A: Yes, we are glad to offer our assistance whenever you need it. We can send our after sales team to address the issue within 14 days
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