QF Series Oxygen/Co2/Nitrogen/Argon Gas Cylinder Valves

Gas Bottle valve

QF Series Oxygen/Co2/Nitrogen/Argon Gas Cylinder Valves
Pressure Reducing Control Valves, Pressure Regulators
MEDIUM AVAILABLE: O2/Co2/Ar/Nitrogen
INLET THREAD: GB8335 PZ27.8
OUTLET THREAD: G5/8
SAFETY DEVICE(Mpa):21±1.5
WP(Mpa): 15
DN(mm):4

Gas Cylinder Valves Solution-brass casting

DSW industry is one of the leading Manufacturers of standard and custom cylinder valves, including cryogenic valves, gas cylinder valves, diaphragm valves, pressure regulators, and cylinder regulators with high quality and better prices.
No matter what material your  cylinder is made of, valves are usually made of solid brass casting or forging. They’re screwed into the cylinder neck thread and sealed by an o-ring or thread tape.

Cylinder Valve Types

TYPEMEDIUM AVAILABLEWP(Mpa)INLET THREADOUTLET THREADSAFETY DEVICE(Mpa)DN(mm)STRUCTURAL STYLE
QF-2O2,N215GB8335 PZ27.8G5/821±1.54Valve type
QF-2BO2,N215GB8335 PZ27.8G5/8-LH21±1.54Valve type
QF-2B1O2,N215G1/2W22×1/1421±1.54Valve type
QF-2CO2,N215GB8335 PZ27.8G5/821±1.54Valve type
QF-2DO2,N215GB8335 PZ27.8Internal thread G5/821±1.54Valve type
QF-2EO2,N215JIS B 8246 V1 φ20W22×1/144Valve type
QF-2FO2,N215GB8335 PZ27.8G5/821±1.54Valve type
QF-2GO2,N215GB8335 PZ27.8G5/821±1.54Shaft type
QF-2MO2,N215GB8335 PZ27.8G1/221±1.54Valve type
QF-2PO2,N215GB8335 PZ27.8G5/821±1.54Valve type
QF-4O2,N215GB8335 PZ27.8G3/421±1.54Valve type
QF-5O2,N220GB8335 PZ27.8G5/828±24Valve type
QF-6O2,N215GB8335 PZ27.8Internal thread G5/84Valve type
QF-7O2,N215GB8335 PZ27.8Internal thread G5/84Needle form
QF-8O2,N215GB8335 PZ27.8G1/24Shaft type
QF-12O2,N215GB8335 PZ19.2G5/821±1.54Valve type
QF-20O2,N215GB8335 PZ19.2G1/221±1.52Diaphragm type
QF-21O2,N215GB8335 PZ19.2W21.8×1/1421±1.52Diaphragm type
QF-22O2,N215GB8335 PZ27.8W21.8×1/1421±1.54Valve type
QF-25O215GB8335 PZ19.2φ7 Hose2Needle form
QF-27O2,N215JIS B 8246 V1W22×1/1421±1.53Valve type
F-1O2,N215GB8335 PZ27.8Internal thread W23×1/1421±1.54Valve type
F-2O2,N215JIS B 8246 V2Internal thread W23×1/1421±1.54Valve type
F-3O2,N215BS341 1×1/14Internal thread G5/821±1.54Shaft type
DF-4O2,N215GB8335 PZ27.8G5/821±1.54Shaft type

 

Gas Bottle Valve- Oxygen cylinder valve

gas cylinder valves

Types of Gas Valves

Compression Packed Valves
These valves use compressed packing to make a seal around the valve spindle & body. To ensure a good seal, the packing nut is tightened to compress the packing against the spindle. As this results in higher torques, the valve is operated with wrench. The design allows for tightening of the gland nut in case of leakage past the packings.
O-Ring Seal Valves
These valves have a non-rising upper spindle & threaded lower spindle. It uses O-ring/s to create a seal around the upper spindle. The top spindle is designed to fail first, allowing valve maintenance & package content recovery in the event of a failure, even when the cylinder is full. These valves come in key, toggle, handwheel & handle operation.
gas cylinder valves

Brass Material for Cylinder Valves

gas cylinder valves

gas cylinder valves
gas cylinder valves
gas cylinder valves
gas cylinder valves

GAS CYLINDER VALVES 3/4″ -14 NOT – ARGON, HELIUM, NITROGEN
This DSW gas valve is made from heavy-duty forged brass and is specifically designed for use with argon, helium, or nitrogen in steel inert gas cylinders.
Typical applications include welding and other industrial uses.

PREMIUM CONSTRUCTION
Heavy-duty forged brass body for durability and high pressure
Precisely machined internal components meet the most stringent international valve performance standards
Metal-to-metal seal below bonnet threads prevents tension in the lines at the top of the valve body

GAS CYLINDER VALVES
Pressure relief device
Automated assembly and testing processes ensure exceptional quality
100% helium leak tested
A pressure Relief Device (PRD) is a unitized plug design that provides excellent flow characteristics and ensures proper assembly and tamper resistance.
Direct-drive stem design with optimized O-ring or double O-ring seal reduces friction and operates at deficient torque levels.
Tapped for dip tube as required