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Commonly used type of gas valves and technical specifications

Classification:Gas Knowledge Date:2015/03/24 PV:1120

Oxygen cylinders
 For media oxygen, nominal working pressure 15MPa, nominal diameter 3mm, outlet thread φ7 clamps 1-φ6 dowel pins, connecting thread BS3411-1 and cylinders / 14

 Straight-off valve
 For media oxygen, hydrogen, nitrogen, air, nominal working pressure 15MPa, nominal diameter 4mm, threaded inlet connection inside dimensions W22 × 1/14, the outlet connection size W22 × 1/14

 Gas cylinders
 Suitable medium gas, nominal working pressure 20MPa, nominal diameter 5mm, outlet thread and cylinder connecting thread BS341-1, temperature or pressure safety device 27 ± 3MPa, 100 ℃ ± 5 ℃

 Freon cylinder valve needle form
 For media freon, nominal working pressure 3MPa, nominal diameter 7mm, outlet thread G3 / 4, with the cylinder connecting thread GB8335PZ27.8mm, temperature or pressure safety device 70 ℃ + 4 ℃ / -2 ℃

 Valve type nitrous oxide cylinders
 For media nitrous oxide, nominal working pressure 15MPa, nominal diameter 4mm, outlet thread CGA326, and cylinder connecting thread GB8335, PZ27.8, safety device temperature or pressure 21 ± 1.5

 Valve-type hydrogen cylinders
 For media oxygen, hydrogen, nitrogen, nominal working pressure 15MPa, nominal diameter 4mm, outlet thread CGA350, and cylinder connecting thread GB8335, PZ27.8, safety device temperature or pressure 21 ± 1.5

 Argon gas cylinder valve type valve
 For media helium, neon, argon, krypton, xenon, nominal working pressure 15MPa, nominal diameter 4mm, export threaded inner thread CGA580, and cylinder connecting thread 3 / 4-14-NGT, temperature or pressure safety device 28 ± 2

 Straight-off valve
 For media oxygen, hydrogen, nitrogen, air, nominal working pressure 20MPa, nominal diameter 25mm, inlet connection size φ38 silver solder, silver solder outlet connection size φ38

 Valve-type carbon dioxide cylinder valve
 Medium carbon dioxide, the nominal working pressure 15MPa, nominal diameter CGA320, export threaded 3 / 4-14-NGT, safety device temperature or pressure 21 ± 1.5

 One-way check valve
 For media oxygen, hydrogen, nitrogen, air, nominal working pressure 20MPa, nominal diameter 6mm, inlet connection size G5 / 8, the outlet connection size W21.8 × 1/14-LH

 CNG filling valve
 Suitable medium gas, nominal working pressure 20MPa, nominal diameter 4mm, outlet connection NPT1 / 4, M14 × 1.5 inlet connection piston bore 12

 Valve oxygen cylinders
 For media oxygen, air, nitrogen, nominal working pressure 20MPa, nominal diameter 4mm, internal thread G5 / 8, with the cylinder connecting thread GB8335PZ27.8mm, safety devices or pressure 28 ± 2

 Straight-off valve
 For media oxygen, hydrogen, nitrogen, air, nominal working pressure 15MPa, nominal diameter 4mm, inlet connection size G5 / 8, the size of the outlet connection thread G1 / 2

 Nitrogen Regulator
 For medium nitrogen nominal working pressure of imports ≤15MPa, export ≤6MPa, nominal diameter φ3 ~ φ10mm, other media products acetylene, oxygen, hydrogen, argon, safety devices ≤10MPa, import connecting thread G5 / 8, G3 / 4, the ...

 Angle valve
 For media oxygen, hydrogen, nitrogen, air, nominal working pressure 20MPa, nominal diameter 15mm, inlet connection thread 3/4 internal dimensions, internal dimensions outlet connection thread 3/4

 Oxygen cylinders
 For media oxygen, nominal working pressure 15MPa, nominal diameter 1.5mm, outlet thread φ7 clamps 2-φ4.8 pin, and cylinder connecting thread 3 / 4-16-UNF

 Valve oxygen cylinders
 For media oxygen, air, nitrogen, nominal working pressure 15MPa, nominal diameter 3mm, internal thread G5 / 8, connected to the cylinder thread GB8335PZ27.8mm,

 Oxygen cylinders
 For media oxygen, nominal working pressure 15MPa, nominal diameter 3mm, outlet thread φ7 clamps 2-φ4.7 dowel pins, connecting thread 3 / 4-14-NGT and cylinders

 Gas shut-off valve
 Suitable medium gas, nominal working pressure 20MPa, nominal diameter 4mm, outlet connection card sets holes 6, inlet connection card sets holes 6,

 Angle valve
 For media oxygen, hydrogen, nitrogen, air, nominal working pressure 20MPa, nominal diameter 8mm, inlet connection size G1 / 2, the outlet connection size G3 / 4
Diaphragm oxygen cylinders
 For media oxygen, air, nitrogen, nominal working pressure 15MPa, nominal diameter 2mm, outlet thread W21.8 × 1/14, with the cylinder connecting thread GB8335PZ19.2mm

 Freon cylinder valve shaft-coupled
 For media freon, nominal working pressure 12.5MPa, nominal diameter 4mm, outlet thread G3 / 4, with the cylinder connecting thread GB8335PZ27.8mm

 Small medical oxygen cylinders
 For media oxygen, nominal working pressure 20MPa, nominal diameter 2mm, outlet thread 21.8 × 14 teeth / inch, with a cylinder connecting thread M18 × 1.5

 Coupling of oxygen cylinders
 For media oxygen, air, nitrogen, nominal working pressure 30MPa, nominal diameter 2mm, the outlet screw thread G5 / 8, with the cylinder connecting thread M18 × 1.5

 Valve-type hydrogen cylinders
 For media hydrogen nominal working pressure 15MPa, nominal diameter 4mm, outlet thread W21.8 × 1/14-LH, connected with the cylinder thread GB8335PZ27.8mm

 Nitrous oxide cylinders
 For media nitrous oxide, nominal working pressure 15MPa, nominal diameter 2.5mm, outlet thread φ7 clamps 2-φ4.7 pin, and cylinder connecting thread 3 / 4-14-NGT

 Straight-off valve
 Using the media oxygen, hydrogen, nitrogen, air, nominal working pressure ≤3MPa, nominal diameter 12mm, inner size inlet connection thread G1 / 2, the size of the outlet connection thread G1 / 2

 Shaft-coupled carbon dioxide cylinders
 Medium carbon dioxide, the nominal working pressure 15MPa, nominal diameter 7mm, outlet thread G5 / 8, with the cylinder connecting thread GB8335PZ27.8mm, temperature or pressure safety device 21 ± 1.5MPa

 Straight-off valve
 For media oxygen, hydrogen, nitrogen, air, nominal working pressure 20MPa, nominal diameter 10mm, inner size inlet connection thread M33 × 2, inside dimensions outlet connection thread M33 × 2

 Right-angle one-way check valve
 For media oxygen, hydrogen, nitrogen, air, nominal working pressure 20MPa, nominal diameter 10mm, inlet connection thread 3/4 internal dimensions, internal dimensions outlet connection thread 3/4
 Straight-off valve
 Using the media oxygen, hydrogen, nitrogen, air, nominal working pressure 3MPa, nominal diameter 18mm, inner size inlet connection thread G3 / 4, inside dimensions outlet connection thread G3 / 4

 Valve oxygen cylinders
 For media oxygen, air, nitrogen, nominal working pressure 15MPa, nominal diameter 4mm, outlet thread CGA540, and cylinder connecting thread 3 / 4-14-NGT, safety device temperature or pressure 21 ± 1.5

 Helium valve cylinders
 For media helium, neon, argon, krypton, xenon, nominal working pressure 15MPa, nominal diameter 4mm, outlet thread CGA580, and cylinder connecting thread 1-1112-NGT, safety device temperature or pressure 21 ± 1.5

 Angle valve
 For media oxygen, hydrogen, nitrogen, air, nominal working pressure 15MPa, nominal diameter 4mm, inlet connection size φ9, outlet connection size φ9

 Angle valve
 For media oxygen, hydrogen, nitrogen, air, nominal working pressure 20MPa, nominal diameter 15mm, inlet connection thread 3/4 internal dimensions, internal dimensions outlet connection thread 3/4

 Gas cylinders
 Suitable medium gas, nominal working pressure 20MPa, nominal diameter 4mm, internal thread 2-NPT1 / 4, with the cylinder connecting thread PZ27.8, temperature or pressure safety device 33 ± 2MPa, 100 ℃ ± 5 ℃


 Automatic switching oxygen bus

 Inlet pressure 15MPa, the outlet pressure of 0.5MPa (0 ~ 0.5MPa adjustable), rated flow 30m / h, automatically switching pressure 0.8 ± 0.1MPa, bottles alarm pressure 0.8 ± 0.1MPa, the power supply voltage 220V / 50Hz, power consumption ≤ 15W, ...

Gas cylinders (limiting device)
 Suitable medium gas, nominal working pressure 20MPa, nominal diameter 4mm, outlet thread NPT1 / 4, with the cylinder connecting thread PZ27.8, temperature or pressure safety device 33 ± 2MPa, 100 ℃ ± 5 ℃

 Needle type chlorine cylinders
 For media chlorine, nominal working pressure 2MPa, nominal diameter 6mm, outlet thread G3 / 4, with the cylinder connecting thread GB8335PZ27.8mm

 Acetylene pipeline shut-off valve
 For media acetylene, nominal working pressure 2.5MPa, nominal diameter 5mm, inlet connection size M22 × 1.5, threaded outlet connections inside dimensions M16 × 1.5