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BLOCK & BLEED GATE VALVES FOR CHEMICAL AND PETROCHEMICALINDUSTRIES

Valve shown has a special“Pipeline” bonnet. Standard bonnets with regular yoke also available.

DESIGN FEATURES: AVAILABLE RANGE

â—� Positive shutoff with visual orremote proof of seat tightness. Velan block and bleed gate valvesare available in the following sizes: Class 150:carbon steel, flanged or butt weld, 2–60" (50–1500mm).Class 300:carbon steel, flanged or butt weld, 2–36" (50–900mm). absolute tightness.
â—� No product contamination Elastomer-to-metal seat plus metal-to-metal secondary seal.
â—� Dual seating.
â—� Fire Safe . The metal-to-metal seat ensures tightness if the secondary elastomer seat is damaged during the fire.

EASY IN-LINE VALVERESEATING

Seats are hardfaced with SS410and welded-in for lifetime service. A worn soft seat insert can easily be replaced after removal of wedge from the body. Shut off flow and relieve pressure before replacing the seat insert. resists corrosive media, has high abrasion resistance and operates up to +400°F (204°C).
â—� PTFE seat insert
â—� Seat hardfaced with SS 410 and seal welded. STYLEA 2–12" SEAT - WEDGE DESIGNSTYLEB14–60" SEAT–WEDGE DESIGN*
0.015" APPROX. SPECIFICATIONS FOR SEAT INSERT MATERIALS
TYPEMAXIMUM OPERATINGNOT RECOMMENDED TEMPERATURE PTFE-100°F to +400°FFluorinated hydrocarbons -73°C to +204°CBuna-N-20°F to +200°FHalogenated hydrocarbons, Nitrobenzene, Aniline, TESTPLUG
-29°C to +93°CHydraulic fluids, Skydrol, Cellulube, Pydrazil, AcetoneViton-20°F to +400°FAcetone, Anines, Anhydrous ammonia,-29°C to +240°CHot Hydrofluoric acid, Ester, Ethers *14–24" (350–600mm) may be STYLEA or B atmanufacturer's option 27