Guardian Pressure Valve, TTMA Flanged Connection
The Betts’ GuardianTM TTMA flanged pressure valve is a spring loaded reclosing pressure relief device/valve for use as a cargo tank’s primary pressure relief system. The pressure 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 un-threading 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
4″ TTMA flange connection has eight 3/8-16 UNC X .65 deep blind holes.
Product Details
| Part Number | Size and Connection | Weight lbs. [kg] |
|---|---|---|
| RVP4F*-** | 4" TTMA FLG. | 19.9 [9.0] |
| - An Example of a part number would be RVP3AT-25. This would have PTFE seals and be used on a 25 MAWP tank. - Part numbers with ECTFE (Halar®) coating as follows: RVPL3A*-**. "L" indicates ECTFE coated. - Values shown are test values. Actual results may vary due to service conditions. |
||
| * 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) |
|---|---|---|---|---|
| 25 | 4" | 30 | 389,482 SCFH @ 40 PSIG | 1000 @ 40 psi |
| 25 | 4" | 30 | 432,563 SCFH @ 45 PSIG | 1100 @ 45 psi |
| 30 | 4" | 36 | 432,563 SCFH @ 45 PSIG | 1100 @ 45 psi |
| 35 | 4" | 42 | 496,955 SCFH @ 52.5 PSIG | 1150 @ 52.5 psi |
| 40 | 4" | 48 | 564,486 SCFH @ 60 PSIG | 1200 @ 60 psi |
| ** Designates Tank MAWP | ||||
Installation and Maintenance Manual
MM-RV002 – INSTALLATION AND MAINTENANCE MANUAL FOR 407/412 P/V/C GUARDIAN VENT
Seal Kits & Accessories
Seal Kit part number: SK-RVPT*
*Mounting gasket not included in seal kit
Spanner wrench part number: 75825EY
Dis-assembly wrench number : 75819ZC
Prop 65
WARNING: This product can expose you to chemicals including Chromium (hexavalent compounds) which is known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to: www.P65Warnings.ca.gov. For additional information on Betts products and Proposition 65 list please see: https://www.bettsind.com/prop-65/