In order to ensure the safety of use, it is stipulated that the outlet spiral direction of gas cylinder valve should use left screw thread for combustible gas and right screw thread for non-combustible gas.
Bottle caps should have good impact resistance. Oxygen and strong oxidation gas cylinder valve sealing material, liquefied petroleum cylinder valve handwheel must be flame retardant material.
The main performance test items before delivery are air tightness test, safety device action test;
Body strength test and opening and closing moment, opening range, vibration resistance, moisture resistance, high temperature (or low temperature) and vacuum test should be carried out before shaping and identification.
The manufacturer of bottle valves must have a manufacturing license.
Cylinder valve is divided into valve type, shaft type, needle type, rubber connection type and diaphragm type according to structure. Their range of action is the pressure range for compressed gas and the temperature range for liquefied gas.
150bar common valve model: Qf-2 qF-2C qF-2C7 QF-2G1 qF-2G QF-2b qF-6a qF-7D2 qF-2D qF-7b qF-2Z QF-2P CGA540 CGA540A CGA580 CGA580A CGA870 CGA910 CGA940
| Oxygen, Nitrogen, Air valve series | ||||
| valve type | Connect thread to gas cylinder | Air outlet thread | Applicable medium | Working Pressure |
| QF-2 | PZ27.8/PZ19.2 | G5/8 | Oxygen, nitrogen, air | 150bar |
| QF-2C | PZ27.8 | G5/8 | ||
| QF-2C7 | PZ27.8 | G5/8 | ||
| CGA540 | PZ27.8 | 0.903-14NGO | ||
| CGA540A | PZ27.8 or 3/4-14NGT | 0.903-14NGO | ||
| CGA580 | PZ27.8 | 0.965-14NGT | ||
| CGA580A | PZ27.8 or 3/4-14NGT | 0.903-14NGO | ||
| QF-2G1 | PZ27.8 | G5/8（Inside thread） | ||
| QF-2G | PZ27.8 | G5/8（Inside thread） | ||
| QF-2B | PZ27.8 | G5/8 (Left external thread) | ||
| QF-7D2 | PZ27.8 | G5/8（Inside thread） | ||
| QF-6A | PZ27.8 | G5/8（Inside thread） | ||
| CGA870 | PZ27.8 or 3/4-16UNF | clamp | ||
| CGA940 | PZ27.8 or 3/4-16UNF | clamp | ||
| QF-2D | PZ27.8 | G5/8（Internal thread plating） | ||
| QF-7B | PZ27.8 | G5/8（Inside thread） | ||
| QF-2Z | PZ27.8 | G3/4 | ||
| QF-2P | PZ27.8 | W21.8-14 | ||
