Relief Valve – 805LQ 100


The 805LQ is for liquid use only.

  • Traditional Blue Primer Painted Casting

  • Low Cost

  • General Purpose


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The 805LQ is for liquid use only.

Part #  NB Cert. #  Body Material  Wt (lbs) Size 
805LQ 100 51062 Ductile Iron Casting 60-40-18 7.9 1” FNPT inlet x 1 ¼” FNPT outlet

#805LQ safety relief valve can be mounted on the following manifolds:

  • #843- ½” x ½” x ½” FNPT (hand wheel)
  • #843F- ½” x ½” x ½” FNPT (seal cap)
  • #846M- ½” x ½” x ½” FNPT (seal cap)
  • #848M- ¾” x ½” x ½” FNPT (seal cap)

Additional Information

  • For liquid use only.
  • The 805LQ series of relief valves is available in set pressures of 100 psi.
  • Body is painted blue.
  • There is no seat leakage of 805LQ up to 85% of set pressure.
  • All upper and lower seats are constructed from 304 stainless steel to prevent corrosion and embedded with a Teflon ring.
  • All springs are stainless steel.
  • All relief valves come with an installation tag and cable tie.
  • Each valve’s identification tag has the required information of catalog number, month and year of manufacture with lot number, set pressure, inlet pipe size, and capacity for WATER in units of GMP.
  • Each valve undergoes 3 separate test sequences to verify quality and set pressure, and then is sealed for security.
  • All Shank Relief Valves are manufactured in accordance with ASME Quality Control Procedures and stamped with the ASME Certification Mark with UV designator.
  • They are certified by the National Board of Boiler & Pressure Vessel Inspectors.
803LQ  Relief Valve Capacity Chart  
805LQ 100 100 36.5

Additional information

Inlet Port Size


Outlet Port Size

1 1/4"

Material Type


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