Material of Construction
|Part #||Manhole Cover||Strongback and Latch||PRV Cover||Normal Vent||Weight|
|FVA9720BX*||Steel Zinc Plated||Steel Zinc Plated||Aluminum||6238AL Aluminum||29.7 lbs. (13.5 kg)|
|FVA9720CX*||304 Stainless||304 Stainless||Aluminum||6238AL Aluminum||29.7 lbs. (13.5 kg)|
|FVA9720DX*||316 Stainless||304 Stainless||Aluminum||6238AL Aluminum||29.7 lbs. (13.5 kg)|
|* Last letter of part number designates seal material. See gasket material table.|
|T||PTFE (w/ Nitrile or Silicone Core)|
|V||FKM Type A|
- Use part number FVA9763 for self-latch.
- Suffix “059” option for padlock loop installed in strongback.
- Prefix “FSA” for both 6238AL normal vent & 6234AL inbreathing vent included.
- Weld Collar NOT included with assembly, but available separately as shown in part list. Collar material should correspond with tank shell material. When welding collars to tank, care should be taken to insure collar remains flat and round with use of a welding fixture if necessary.
|PAF450 Pressure Relief Valve||6238AL Normal Vent (P/V Vent)|
|Set Pressure||Related Air Flow Capacity|
(Cubic feet per hour)
|Pressure Set||Pressure Rated Flow Capacity||Vacuum Set||Vacuum Flow Capacity|
|Min 3.0 psig|
(Min 20.7 kPa)
|375,000 SCFH @ 5 psig|
(10.618 SCMH @ 34.5 kPa)
|Max 1.0 psig|
(max 6.8 kPa)
|1,750 SCFH @ 3 psig|
(49 SCMH @ 20.7 kPa)
|Max .375 psig|
(Max 2.5 kPa)
|3,350 SCFH @ 1 psig
(95 SCMH @ 6.8 kPa)
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/