Plug relief valve 3800

3800 Series ASME NB Certified: Air, Water & Steam 3800Sizes 1" x 2" to 12" x 16". Orifice areas from 0.110 to 109 square inches. Pressures from 15 psig to 6,170 psig. Temperature range of -400 °F to +450 °F. Steel body and bonnet with stainless steel trim. Semi-nozzle design. The "D" to "T" orifices meet API standard 526 covering orifice areas and center to face dimensions. Full bore designs available with 1" through 12" inlets and orifice areas from 0.719 to 109 square inches giving maximum capacity for a given inlet and modulating size. All stainless, non-flowing pilot controls minimizes product loss and provides maximum resistance to corrosion. Available in Snap Acting or Modulating designs. Standard "O" ring elastomer seat main valve and pilot control minimizes fugitive emissions and allows operation within 95% of set pressure. Materials include Viton®, Buna N, ethylene propylene, silicone and Teflon. Optional materials of construction include complete 316 stainless steel. Applications: Air, gas, vapor, liquid and steam services where maximum seat tightness, operating pressures and precise adjustment are required. Excellent for natural gas pipeline and compressor service.