Cavagna Kosan 69-C-890-0011 ACME Single Stage Regulator (90 Degree) is equipped with a relief valve. If the pressure of regulation increases too much, an integrated valve in the seat disk opens and the excess of gas vents to the outdoors through vent hole.

• Inlet: ACME 1, 312 (1/4" Female NPT, QCC1 Type 1)
• Outlet: 3/8" Female NTP
• Up To 70,000 BTU Capacity
• Inlet Pressure From 25 To 250 PSI Is Regulated At 11" WC
  

This regulator is also designed not to produce any sound vibrations to prevent any disturbance.