Description:
Performance requirements:
1 opening and closing torque, under the nominal pressure, the valve
opening and closing the
required maximum torque should not exceed 6Nm
2 air tightness, under the nominal pressure of 1.1 times, the valve
is closed and any open state
should be no leakage.
3 vibration resistance, under the nominal pressure, the valve
should be able to withstand the
amplitude of 2mm, frequency of 33 Hz 1/3 vibration, the valve on
the threaded connection should
not loose, there is no leakage.
4 temperature resistance, under the nominal pressure, the use of
the area of the valve temperature
is divided into: general area of -20~60 degrees Celsius. In the
allowable temperature range,
should not leak.
5 pressure resistance, in 1.6 times the nominal pressure line, the
valve should be no leakage
and other anomalies.
6 durability, under the nominal pressure, the valve structure for
the diaphragm structure, the
whole trip open and close 1000 times, the other structure of the
valve full stroke open and close
4000 times, there should be no leakage and other anomalies.
7.safety device action, the safety device should be in the range of
1.2-1.5 times the nominal
pressure action.
| Model | Product name | Medium | Service Pressure(MPa) | Inside nominal diameter(mm) | Internal thread mm | Temperature or pressure of safe apparatus(MPa) | Thread connected to cylinder (mm) |
| QF-2G | Coupling oxygen valve | oxygen, atmosphere nitrogen | 15 | 4 | G5/8 | 21±1.5 | GB8335 PZ27.8
|
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FAQ
Q: How long is your delivery time?
A: Generally it is 5-10 days if the goods are in stock. or it is
25-35 days if the goods are
not in stock, it is according to quantity.
Q: Do you provide samples ? is it free or extra ?
A: Yes, we could offer the sample for free charge but do not pay
the cost of freight.
Q: What is your terms of payment ?
A: Payment<=1000USD, 100% in advance. Payment>=1000USD, 30%
T/T in advance ,
balance before shippment.
