Advanced Specialty Gas Equipment

Brass Two-Stage Regulator Model LABE
Models LABE

High Purity, Two-Stage, Chrom-Plated Regulators

These metal diaphragm two-stage regulators are specially designed for laboratory applications requiring both high reliability and diffusion resistance. Recommended for high purity non-corrosive gases or gas mixtures, they provide constant outlet pressure regardless of changes in cylinder (inlet) pressure.


Standard Features
  • Stainless Steel Diaphragms minimize diffusion of air into regulator and eliminate “off gassing” associated with elastomeric diaphragms, thus maintaining gas purity.
  • High Purity Regulator Design permits vacuum purging of regulator.
  • Diaphragm Seal Outlet Valve maintains gas purity.
  • Two-Stage Regulator Design ensures constant delivery pressure over varying inlet pressures.
  • Chrome-Plated Surfaces provide polished appearance and ease of cleaning.
  • Cartridge (Encapsulated) Seat Assemblies provide for ease of maintenance and repair.
  • Filter in Each Seat Assembly traps foreign matter, extends regulator life and reduces maintenance.
Optional Features
  • Relief Valve protects regulator components from the effects of overpressurization.
Maximum Inlet Pressure: 3000 psig

Inlet Pressure Gauge(dual scale):
   0–4000 psig / 0–275 bar

Delivery Pressure Range

Delivery Pressure Gauge

Filter: 10 micron

Gauge Size: 2" Dial

Operating Temp. Range: -40°F to 140°F

Flow Coefficient:
  Regulator: Cv = 0.15
  Outlet Valve: Cv = 0.17

Inlet Connection: CGA 296, 320, 326, 346,
350, 540, 580, 590, or 660 as ordered

Outlet Connection:
  1⁄4" NPT female (on outlet valve)

Optional Relief Valve Vent Connection:
  1/4" NPT male

Supply Pressure Effect: 0.04 psi per 100 psi

Approximate Weight: 5 lbs

Materials of Construction
Body: Chrome-Plated Brass Forging
Gauges: Chrome-Plated Brass
Bonnet: Chrome-Plated Zinc
Filter: Nickel-Plated Sintered Bronze
Other Metal Parts Exposed to Gas:
  Brass and Stainless Steel
Seat and Seals: PTFE in Regulator
Diaphragm: Type 304 Stainless Steel
Outlet Valve:
   Body: Nickel-Plated Brass Bar Stock
   Seat: PCTFE
   Diaphragm: Type 316L Stainless Steel

Optional Equipment

Equipment Part No.
Relief Valves:  
for LABE-3-15 Series RV5573-25i
for LABE-3-50 Series RV5573-90i
for LABE-3-125 Series RV5573-150i
for LABE-3-250 Series RV5573-300i

Table I

  Delivery Pressure
Part No. Range
Gauge (dual scale)

LABE-3-15-(CGA) 2–15 -30" Hg–0–30 -1–0–2
LABE-3-50-(CGA) 4–50 -30" Hg–0–100 -1–0–7
LABE-3-125-(CGA) 10–125 -30" Hg–0–200 -1–0–14
LABE-3-250-(CGA) 20–250 0–400 0–27
Where “(CGA)” is indicated above, insert appropriate Compressed Gas Association connection number to complete the part number. Example: LABD-3-15-580. Order by complete part number.