HP 741
HP 742
HP 743
HP 721
HP 722
HP 723
HP 701
HP 702
HP 703
 
GP 401
GP 402
GP 403
GP 404
GP 405
8700
HP 750            
   
 
   
 
A single stage cylinder regulator available in brass (HP 721) or
chrome plated brass (HP 721C) barstock for pressure control of
non corrosive gases when pressure rise is not critical.
The HP 721 is suitable for:
  • High purity gas applications
  • Research sample systems gases
  • Process analyzers gases
  • Gas chromatography gases
  • EPA protocol mix gases
  • Laser gas systems
  • Emission monitoring systems gases

Recommended for gas purity levels of Grade 5.0 (99.999)
and higher.

MATERIALS  
Body Brass Barstock (HP 721)
Bonnet Brass Barstock (HP 721)
Diaphragm 316L Stainless Steel
Nozzle Brass
Seat PTFE Teflon
Seals PTFE Teflon
Filter Nickel-Plated Sintered Bronze - 10 Micron
Seat Return Spring PH17-7 Stainless Steel
Adjusting Knob ABS Plastic


FEATURES

  • 1-11/16 316L stainless steel diaphragm eliminates contamination from diffusion or outgassing
  • One piece encapsulated seat design includes a sintered
    filter to protect the seat from particulate contamination
  • 2 dual scale gauges (psi/bar)
  • 1 x 10-9 cc/sec. inboard helium leak rate maintains gas
    purity levels
  • Front or back panel mountable
  • Maximum inlet 3000 PSIG except for CGA 300 and
  • 510 models which have a maximum inlet of 500 PSIG
  • External relief valve standard

Related Options
Captured Vent Kit P/N: 9100875
Front Panel Mount Kit P/N: 9100871

   
  ORDERING INFORMATION
 
HP_ _ _ - xxx - xxx - xx - xxxxx
MODEL
NUMBER
DELIVERY PRESSURE
DELIVERY (OUTLET GAUGE)
CGA INLET OUTLET FITTING ASSEMBLY/OPTIONS
HP 721 0-15 psi (30 Hg Vac-30 psi/2 bar)
0-50 psi (30 Hg Vac-100 psi/7 bar)
0-125 psi (30 Hg Vac-200 psi/14 bar)
0-250 psi (400 psi/28 bar)
0-500 psi (1000 psi/70 bar)
300, 510
320, 540
326, 580
346, 590
350
000 (1/4 FNPT)
001 (1/4 MNPT)
A) Needle Valve (M) 1/4
B) Diaph. Valve (F) 1/4
C) 1/4 MNPT
D) 1/4 FNPT port
E) 1/4 Tube Fitting
F) 1/8 Tube Fitting
1) Without Relief Valve
2) He Leak Cert. (Inboard)
3) No Gauges
5) He Leak Cert.(Outboard)
6) 400 psi inlet gauge, Gas Service must be specified