Up for sale is a vintage Cyrus Shank Type 813 refrigerant safety relief valve. This unit was manufactured in 1974 and is set for 250 PSIG with a certified air capacity of 576 SCFM.

Key Features:
Designed for Ammonia (NH3) and other non-corrosive refrigerants.
Features a virgin Teflon seal and stainless steel multiple crown ring for a non-stick, accurate release.
ASME certified slope of 1.99.