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single stage regulator

WA 401

General Purpose - Brass Regulator

Model WA401 is a brass single stage regulator with a neoprene diaphragm for general purpose laboratory applications where a slight rise in delivery pressure from a full to near empty cylinder can be tolerated. The WA401 is not recommended for high purity applications which may be sensitive to contamination due to elastomeric components. The WA401 is suitable for

  • Non-corrosive industrial grade gases
  • Purging
  • Pressure testing
  • Gas blanketing

Materials

Body Brass / Chrome Plated
Bonnet Painted Die Cast / Chrome Plated
Diaphragm Neoprene
Nozzle Brass
Seat PTFE Teflon
Filter Nickel-Plated Sintered Bronze - 10 Micron
Seat Return Spring PH 17-7 Stainless Steel
Adjusting Knob ABS Plastic
Outlet 1/4" MNPT Brass

Features

  • 0-15, 0-50, 0-125 and 0-250 PSIG delivery pressure
  • Neoprene diaphragm for greater sensitivity
  • One-piece encapsulated seat design, to protect the seat from particulate contamination
  • Tamper-proof, self reseating internal safety valve
  • 2″ dual scale brass gauges (psi/kPa)
  • Conforms to CGA E-4 standard for gas pressure regulators

WA 401 Ordering Information

WA 401
Model No.
  • WA 401
  • WA 401C (chrome-plated)
XXXX
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)
XXX
CGA / Inlet Fitting
  • 000 (1/4" FNPT) 350
  • 001 (1/4" MNPT) 500
  • 320 510
  • 326 540
  • 346 555
    580
    590
XX
Accessories
  • A. 1/4" MNPT Needle Valve
  • B. 1/4" FNPT Diaph. Valve
  • C. 1/4" MNPT Nipple
  • D. 1/4" FNPT Port
  • E. 1/4" Tube Fitting
  • F. 1/8" Tube Fitting
  • G. 1/4" MNPT Hose Barb
  • H. 1/8" MNPT Hose Barb
  • I. 1/4" FNPT Hose Barb
  • J. 1/4" FNPT Needle Valve
  • K. SG 910BR Protocol Station w/36" Pigtail
  • L. Industrial Hose Connection "B"
XX
Options
  • 1. No gauges
  • 2. 400 psi inlet gauge
  • Gas Service Must
  • Be Specified

Flow Data

FLOW chart WA 401

Specifications

  • Cv: .17
  • Pressure Regulation: 1.3 PSIG/100 PSIG
  • Weight: 3.5 lbs.

Dimensions

WA-401 DIMENSION chart

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