Diamond Engineering Works

‘DIAMOND DEW’ safety relief valves’ outstanding features are the stainless steel disc, nozzle and accurate designed guide for safety and reliable operation. Guide surface is situated above disc and is not exposed directly to the fluid which prevents erosion due to flow. This system also eliminates obstruction in the orifice. Valves are provided with adjustable ring for adjustment of blow-down pressure in air/gas application.

For zero leak tests the valves are provided with special seating applicable up to 10kg/cm2 and 250°C temperature. Valves are also supplied with lifting lever, test gag to suitable service.

Set pressure range is up to 77Kg/cm2 for sizes ¼” to 2” with screwed ends and from 1” to 6” with flanged ends as per ANSI 150# to ANSI 600#. Body material is of Carbon steel, Stainless steel, Cast steel or Gunmetal with standard stainless steel trim. These safety relief valves are manufactured to meet ASME code sec. VIII. The dimensions, orifice and pressure temperature limits are as per API 526 Std. Higher pressure and severe service safety relief valves are also available upon request