RVC4FT-25 – Guardian Pressure/Vacuum Valve, TTMA Flanged Connection

Guardian Pressure/Vacuum Valve, TTMA Flanged Connection
The Betts’ GuardianTM combination valve is a spring loaded reclosing pressure and vacuum relief device for use on a cargo tank’s primary pressure relief and vacuum relief systems. The combination relief valve is designed, tested and marked in accordance with 49CFR §178.345-10, 49CFR §178.347-4 and 49CFR §178.348-4.

Compact, optimized flow design.
316 Stainless Steel construction.
Teflon seals and wear components.
Safety Stop Screw to help prevent accidental unthreading of housing.
Seal tabs on shroud for security measures.
Simple In-Place Maintenance.
Available ECTFE (Halar®) coated.
Multiple sizes and mounting options.
Multiple seal options.
Vibration damping vacuum vent.
4” TTMA flange connection has eight 3/8-16 UNC X .65 deep blind holes.

• Seal Material Code Material Temp. Range
  T PTFE -40°F to +400°F [-40°C to +204°C]
  F Fluorosilicone -50°F to +350°F [-45°C to +176°C]
  K Kalrez -20°F to +400°F [-28°C to +204°C]
  VB FKM BLT -15°F to +400°F [-26°C to +204°C]
  **MAWP Size Set Pressure (PSIG) Pressure Flow Water Flow Rates (GPM) Set Vacuum (PSIG) Vacuum Flow
  25 4” 30 365,828 SCFH 40 PSIG 1000 40 psi 1.5 12,500 SCFH @ 3.0 PSIG
  25 4” 30 421,629 SCFH 45 PSIG 1100 45 psi 1.5 12,500 SCFH @ 3.0 PSIG
  30 4” 36 421,629 SCFH 45 PSIG 1100 45 psi 1.5 12,500 SCFH @ 3.0 PSIG
  35 4” 42 482,967 SCFH 52.5 PSIG 1150 52.5 psi 1.5 12,500 SCFH @ 3.0 PSIG

Seal Kit part number: SK-RVCT*

*Mounting gasket not included in seal kit

Spanner wrench part number: 75825EY

Dis-assembly wrench number : 75819ZC