• O-ring seats for exceptional leak-free performance, reduced maintenance cost, multiple cycles with tight shut-off, improved seating integrity
• Wide hex on valve nozzle provides wrenching service clearance for easy installation
• Dual control rings offer easy adjustability for precise opening with minimum preopen or simmer and exact blow-down control
• Ball bearing pivot between disc and spring corrects misalignment and compensates for spring side thrust
• Grooved piston model disc reduces sliding area and friction
• Heavy-duty casting
• Seats lapped to optical flatness
• Pivot between disc and spring corrects misalignment and compensates for spring side thrust
• Heavy-duty lifter assembly
• Each valve tested and inspected for pressure setting and leakage
• Side-outlet
• Use on steam only
• Brass nozzle, retainer nut, jam nut, compression screw, spring step, stem retainer, guide, warn ring, seat retainer, stainless steel body set screw, warn ring set screw, wire and seal, guide set screw, cap set screw, warn ring spring, steel A108-1018 or zinc-plated lift nut, gag screw, steel A108-12L14 lever-pin, steel A109 or JIS SPCC equivalent or zinc-plated yellow lever, anodized aluminum cap, ASTM A-313 TY 631 spring
• Stainless steel spring

Standards/Certifications: ASME I, IV, VIII, HV, V, UV, PED certified, CE approved

Applications: For steam boilers and generators, air/gas compressors, pressure vessels and pressure reducing stations

• Specification Sheet https://www.plumbers-supply-co.com//ASSETS/DOCUMENTS/ITEMS/EN/UNI-PS8686_Spec.pdf