TESCOM™ 74-3800 SERIES THREADLESS PRESSURE REGULATOR

74-3800 Series ultra high purity, tied diaphragm pressure reducing regulator offers high flow and internally threadless and low internal volume design with Cv = 0.5. The 74-3800 Series is available with 10 Ra surface finish. Inlet pressures are 600, 1000, or 3500 psig / 41.3, 69.0, 241 bar with outlet pressures up to 150 psig / 10.3 bar. Ideal for use in 1/2″ point-of-use pressure regulator, gas cabinets, high flow purging systems and semiconductor manufacturing.

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TESCOM 74-3800 Series

Specifications

Maximum Inlet Pressure 600, 1000, 3500 psig / 41.4, 69.0, 241 bar
Outlet Pressure Ranges 30, 60, 100, 150 psig / 2.1, 4.1, 6.9, 10.3 bar
Design Proof Pressure 150% of maximum rated
Inboard Leak Rate < 1 x 10-9 atm cc/sec He, per ASTM E449
Operating Temperature Vespel® : -40°F to 350°F / -40°C to 177°C
PCTFE: -40°F to 140°F / -40°C to 60°C
Teflon® PFA: -40°F to 160°F / -40°C to 71°C
Flow Capacity Cv = 0.5
Body 316L VAR Stainless Steel with Electropolish
Diaphragm 316 Stainless Steel or Nickel Alloy (Hastelloy®)
Valve Seat Polyimide (Vespel®) (3500 psig / 241 bar Inlet)
PCTFE (600, 100 psig / 41.4, 6.9 bar Inlet)
PTFE PFA (600 psig / 41.4 bar Inlet)
Remaining Parts 316 Stainless Steel
Internal Surface Finish 10 Ra microinch / 0.25 micrometer
Connections Welded female or male VCR®
Tube stubs
Compression
High Purity Internal Connections (H.P.I.C.)
(Internal style of VCR®, compatible with male swivel VCR®)
Internal Volume 15 cc
Weight (without gauges) 3.2 lbs / 1.5 kg

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