• gas cylinder control valve, gas control valve
Cylinder Gas Control Valve
Product Serial:
ZQ22HD Air Pilot High Flow Control Valve
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  • Pneumatic control (cylinder) valve, also known as B-type valve, the cylinder directly drives the valve plate, seal material Viton or Teflon-PTFE selections.
  • Long life, high flow, resistant to air pollution, can replace copper rotating cylinder valve or diaphragm valve.
  • Long Life, High Flow, High Speed, tolerable to contaminated air.
  • Air, liquid, can be used in positive pressure or vacuum.
  • -5~100℃ Media temperature from -5~100℃ (23°F ~ 302°F)
  • Body material: brass or stainless steel 304. Seal: Viton or PTFE.

Model ZQ22HD15 ZQ22HD20 ZQ22HD25 ZQ22HD35 ZQ22HD40 ZQ22HD50
Body Material Brass / Stainless
Orifice Size 12 16 20 34.5 34.5 44.3
Working Medium Air、Water、Oil、liquefied gas、free-running viscosity liquid
Fluid Pressure 0-10kg/cm2
Medium Temp -5~100℃
Cylinder working pressure 3Bar~

Model A B C ψD H M Q *P *S *T Cylinder Bore KV(m3/h)
ZQ22HD15 G1/2" 48.5 29.5 45 108 95 G1/8" - - - ψ40 3.4
ZQ22HD15-SUS 48.5 29 45 107 95 20.5 20.5 M4*0.7
ZQ22HD20 G3/4" 55.5 35 55 115 99.6 G1/8" - - - ψ50 7.9
ZQ22HD20-SUS 55.2 35 55 113 98 24.5 24.5 M4*0.7
ZQ22HD25 G1" 74.5 43 55 123 104 G1/8" - - - ψ50 11
ZQ22HD25-SUS 74.5 42 55 120 103 28.4 25.8 M4*0.7
ZQ22HD35 G1"1/4 96 55 68 163 139.5 G1/8" - - - ψ63 18
ZQ22HD35-SUS 96.6 52 68 162 139 50.8 38.9 M5*0.8
ZQ22HD40 G1"1/2 96 60 68 165 139 G1/8" - - - ψ63 28
ZQ22HD40-SUS 96.6 58 68 163.5 138 51.4 41.2 M5*0.8
ZQ22HD50-SUS G2" 113 70 86 181.5 151.4 G1/8" 58.4 49.7 M5*0.8 ψ80 44

*Only the stainless steel body series has fixing holes.


Max Operating Pressure

Single Action Double Acting
Port UNDER SEAT
(Bar)		 OVER SEAT
(Bar)		 PILOT
(Bar)		 Port UNDER SEAT
(Bar)		 OVER SEAT
(Bar)		 PILOT
(Bar)
1/2" 7 7 3 1/2" 8 8 3
3/4" 7 7 3 3/4" 8 8 3
1" 5 7 3 1" 8 8 3
1"1/4" 2 7 3 1"1/4" 8 8 3
1"1/2" 2 7 3 1"1/2" 8 8 3
2" 2 7 3 2" 8 8 3
"Series Port Body Material   "Motion Pattern "Seal Material
"ZQ22HD "15 "SUS － "SC "V
  15-1/2" - :Brass   "SC: Single Action & Normally Close V:Viton
20-3/4" SUS:Stainless Steel D: Double Action P:PTFE(Only Double Action not for Single Action)
25-1"      
35-1"1/4
40-1"1/2
50-2"