Press Release Summary:
Offered with or without integral safety screens, 281 PRIÂ®/ChekÂ® Valve is designed to facilitate insertion. Relief valve function features Tungsten Carbide ball andÂ 440C seat for durability andÂ extended life, while remaining components are constructed of stainless steel. Various relief flow cracking pressures are available for system pressures up to 5,000 psi, and max restriction in free flow direction is 300 LΩ (550 LΩ for screened version).
Original Press Release:
New Dual Function Valve
WESTBROOK, CT – The Lee Company's new 281 PRI®/Chek® Valve combines the function of a pressure relief valve in parallel with a check valve into one easy to install insert. The relief valve function features a rugged Tungsten Carbide ball and a 440C seat for durability and long life. The remaining components are constructed entirely of stainless steel.
Offered with or without integral safety screens, the 281 PRI/Chek Valve is available in a range of relief flow cracking pressures for system pressures up to 5000 psi. Maximum restriction in the free flow direction is only 300 Lohms (550 Lohms for the screened version). Each Lee PRI/Chek Valve is 100% tested and inspected in both flow directions to ensure reliable, consistent performance.
Product URL: http://www.theleeco.com/whats-new/281-pri-chek.cfm