281 PRI/Chek Valve

The  281 PRI/Chek Valve combines the function of a pressure relief valve in parallel with a check valve into one easy to install insert.

281 PRI CHEK VALVE

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 screened version).

Each Lee PRI/Chek Valve is 100% tested and inspected in both flow directions to ensure reliable, consistent performance.

  • Combines the function of a pressure relief valve in parallel with a check valve
  • Durable tungsten carbide ball and a 440C seat
  • Screened version available
  • Designed for system pressures up to 5000 psi
  • Weighs only 8 grams (9 grams for screened version)
  • Endurance tested to 100,000 relief flow and 500,000 free flow cycles

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