"DF" Series Double Stage





➤ "DF" Series Double Stage

These general purpose Two stage regulators are recommended for inert and non-corrosive pure gases and mixtures in laboratories where constant delivery pressure regardless of fluctuations in cylinder.


Regulator Feature :

  • Designed for easy maintainance.
  • No metal to metal seat in nozzle for easy opening & closing.
  • All component machined on CNC machine.
  • All components are ultrasonicaly cleaned, also polishing & deburring in finishing machine.
  • Weated are spring & poppet (pin) made from stainless stell to avoide rusting.
  • Pressure key made from stainless steel & roll threaded to avoide wornout bonnet thered.
  • Gas filteration with stainless steel wiremesh twice from inlet to restrict dust particle to enter.

Materials Of Construction :

  • Body : Forged Brass
  • Bonet : Al.Pres.Dies Cast/Forged Brass
  • Diaphragm : Reinforced Neoprene Rubber/1st stage stainless still
  • Nozzle : Brass
  • Seat : PTFE
  • Filter : Stainess Steel Wire Mesh
  • Seat Return Spring : Stainless Steel
  • Bonnet Spring : Spring Steel Plated
  • Adjusting Knob : ABS with Stainless Steel Screw

Applications :


➤ BRAZING ➤ PURGING
➤ CUTTING ➤ CHROMATOGRAPHY
➤ HEATING ➤ PROCESS CONTROL
➤ WELDING ➤ RESEARCH LAB
➤ MEDICAL ➤ CALORIMETRY

"DF" Series Specification


MAXIMUM INLET 4000 PSIG
OUTLET RANGE 0-4.0 BAR
BODY PORT 1/4 NPT F

Technical Data Sheet

Gas Service Model Cylinder* Delivery Connections*
    PRESSURE BAR GUAGE RANGE BAR PRESSURE BAR GUAGE RANGE BAR INLET OUTLET
ARGON DAR035CDSF 150 0-300 0-4 0-7 G 3-4 RH FEMALE G 3/8 RH MALE
CARBON DIOXIDE DCD035CDSF 80 0-300 0-4 0-7 W 21.8X14 RH FEMALE G 3/8 RH MALE
HELIUM DHE035CDSF 150 0-300 0-4 0-7 G 3-4 RH FEMALE G 3/8 RH MALE
HYDROGEN DHY035CDSF 150 0-300 0-4 0-7 G 5/8 LH MALE G 3/8 LH MALE
NITROGEN DNI035CDSF 150 0-300 0-4 0-7 G 3-4 RH FEMALE G 3/8 RH MALE
OXYGEN DOX035CDSF 150 0-300 0-4 0-7 G 5/8 RH MALE G 3/8 RH MALE
*ALSO AS PER CUSTOMER REQUIREMENT - + AVAILABLE GUAGE RANGE 400 BAR FOR PRESSURE 200 BAR
INLET - IS 3224 : 2002 | OUTLET - ISO / TR 70740 : 1998
1 bar = 14.504 psi = 1.0197 kgf/cm2 | 1 psi = 0.06894 bar = 0.07031 kgf/cm2 | 1 kgf/cm2 = 14.223 psi = 0.98068 bar


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