Custom-vent (not a full scale valve) for 5 psi relief-vent. User fitting is required. Please contact MHI to ensure fittings with the relief vent placed in-line.
Use as is for HGA-S-01 Model.
Choose OAB fittings – pull down menu- if required for the OAB type models. Please contact MHI to determine if fitting will work for the OAB type models.