The excellent pressure resistance of the backflow prevention valve ensures that it can withstand high pressures without cracking or breaking. 𝙐𝙥𝙜𝙧𝙖𝙙𝙚𝙙 𝙎𝙚𝙖𝙡𝙞𝙣𝙜 𝙈𝙖𝙩𝙚𝙧𝙞𝙖𝙡: 720A pressure vacuum breaker uses sealant instead of Teflon tape which is prone to deterioration.
eBay