Tescom 449-254 Series

Features & Benefits

  • Exclusively designed to handle the demands of high purity bulk specialty gas delivery systems
  • Its proven design, high outlet capabilities, bubble-tight shutoff valve and standard Hastelloy® trim provides dependability needed for demanding regulator applications
  • Metal to metal sealed diaphragm
  • Cv = 1.0 with 10 Ra microinch finish on wetted surfaces


Pressure Rating

Maximum Inlet Pressure: 

1500 PSIG [105 bar]
Outlet Pressure Ranges: 

25-400 PSIG [1.7-28 bar]



Body:  316L Stainless Steel
Diaphragm:  Elgiloy®
Seat:  PCTFE
Trim:  Hastelloy®
Valve:  Hastelloy®


Operating Temperature

-40°F to +140°F [-40°C to +60°C]


Port Size & Type

Inlet & Outlet Port Size & Type     
1/4″ Male Swivel (High Flow)
1/4″ Female Swivel (High Flow)
1/2″ Male Swivel
1/2″ Female Swivel
1/2″ Tube Stubs


Flow Capacity

Cv = 1.0


Load Type




3.5 lbs [1.73 kg]