3/8" BSPP 12.0bar 08mm Atmospheric Discharge Safety Relief Valve - SEE921PA1B Atmospheric Discharge Safety Relief valves are compact, highly efficient and incorporate the exclusive ‘Tutchtite' seal technology to give repeatable bubble tight sealing performance. Suitable for Air & Gases including refrigerant. Type approved and/or manufactured in comformance with national and international standards which include BS6759 Part 2 & 3, ISO 4126 and TUV (Germany) in accordance with AD Merkblatt A2. Compliant with the requirements of the European Equipment Directive 97/23/EC and CE marked Flow rates calculated: Std Ltrs/Sec of Air @ 15°C Seals: Viton Sealing: Elastomer