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WA 741

High Purity - Stainless Steel Barstock Regulator

Model WA741 is a single stage, stainless steel cylinder regulator for applications where a slight rise in delivery pressure from full to empty cylinder can be tolerated. The Model WA741 is suitable for:

  • Corrosive gas applications
  • High purity gas applications
  • Research sample systems gases
  • Process analyzer gases
  • Gas chromatography
  • EPA protocol gases
  • Laser gas systems
  • Emission monitoring systems

Recommended for corrosive gases or purity levels of Grade 6.0 (99.9999) and higher.

Materials

Body 316L Stainless Steel Barstock
Bonnet Chrome Plated Brass Barstock
Diaphragm 316L Stainless Steel
Nozzle 316L Stainless Steel
Seat PTFE Teflon
Seals PTFE Teflon
Filter Sintered Stainless Steel - 10 Micron
Seat Return Spring PH17-7 Stainless Steel
Adjusting Knob 316L Stainless Steel

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
  • Chrome plated bonnet, 316L SS body and fittings
  • 2″ stainless steel dual scale gauges (psi/bar)
  • 1 x 10-9 cc/sec. inboard helium leak rate to maintain gas purity levels
  • Front or back panel mountable
  • Maximum inlet 3000 PSIG except for models with CGA 240 and 510 equipped with 400 PSIG inlet gauge

Related Options

  • Front Panel Mount Kit P/N 9100871
  • Wall mounting bracket P/N: 9101242

WA 741 Ordering Information

WA741
Model No.
  • WA 741
XXX
Delivery Pressure
Delivery (Outlet Gauge)
  • 0-15 PSIG (30” Hg Vac-30 psi/2 bar)
  • 0-50 PSIG (30" Hg Vac-100 psi/7 bar)
  • 0-125 PSIG (30" Hg Vac-200 psi/14 bar)
  • 0-250 PSIG (400 psi/28 bar)
  • 0-500 PSIG (1000 psi/70 bar)
XXX
CGA / Inlet Fitting
  • 240 510
  • 320 540
  • 326 580
  • 330 590
  • 346 660
  • 350 705
  • 000 (1/4" FNPT)
  • 001 (1/4" MNPT)
XXXX
Accessories
  • A) 1/4" FNPT Needle Valve
  • C) 1/4" MNPT Nipple
  • D) 1/4" FNPT Port
  • E) 1/4" Tube Fitting
  • F) 1/8" Tube Fitting
  • G) Single Regulator Alarm
  • R) SG 910 EZ BR Regulator Mounting Station
XXXX
Options
  • 2. He Leak Cert. (Inboard)
  • 3. No Gauges
  • 4. With Relief Valve
  • 5. He Leak Cert. (Outboard)
  • 6. 400 PSI Inlet Gauge

Flow Data

Specifications

  • Cv: .08
  • Pressure Regulation: 1.8 PSIG/100 PSIG
  • Weight: 2.92 lbs.

Dimensions

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