44-5000 Series is a compact, lightweight, high purity absolute single-stage regulator for specialty, corrosive, and pyrophoric gases. Diffusion-resistant metal-to-metal diaphragm seal ensures gas purity and integrity. Excellent for sub-atmospheric outlet pressures. Ideal for use in gas chromatograph sampling systems, delivery system cylinder regulator and low vapor pressure hydrocarbon gases

Pressure Rating

Maximum Inlet Pressure: 120, 400, 3500 psig / 8.3, 27.6, 241 bar
Outlet Pressure Ranges: 50 mm Hg absolute - 15 psig / 1.0 bar, 25 psig / 1.7 bar, 50 psig / 3.4 bar, 100 psig / 6.9 bar

Body Material

316 Stainless Steel or Brass

Diaphragm & Spring Material

316 Stainless Steel

Seat Material

Teflon®

Friction Sleeve Material

(400 and 3500 psig / 27.6 and 241 bar inlet only)
Inner: Teflon®
Outer: 316 Stainless Steel

Remaining Parts

316 Stainless Steel (Brass for Brass Bodies)

Operating Temperature

-40°F to 165°F / -40°C to 74°C

Port Size & Type

1/4 NPTF, 1/4 MS33649

Flow Capacity

120 psig / 8.3 bar inlet: Cv = 0.24
400 psig / 27.6 bar inlet: Cv = 0.15
3500 psig / 241 bar inlet: Cv = 0.06

Weight (without gauges)

2 lbs / 0.9 kg