{"product_id":"double-disc-wafer-check-valve-ss-disc-buna-seat-mueller-steam-specialty","title":"Double Disc Wafer Check Valve - SS Disc- Buna Seat- Mueller Steam Specialty","description":"Double Disc Wafer Check Valve - SS Disc- Buna Seat- Mueller Steam Specialty\u003cbr\u003e\u003cbr\u003e* Designed for liquids and gases where flow reversal can cause surge and water hammer.\u003cbr\u003e*  Elastomer seats provide bubble-tight shutoff.\u003cbr\u003e*  Compact design with short face-to-face dimensions for minimum space requirements.\u003cbr\u003e* Dual shaft design allows interchangeability of shafts.\u003cbr\u003e* Torsion springs close the valve prior to flow reversal.\u003cbr\u003e* Torsion springs exert a lifting motion on the discs, enabling the center \"heel\" to open first. This prevents excessive wear of the seat in this area, and provides a consistent wear pattern and long sealing capability. • Downstream stop shaft stabilizes the discs at high flow rates and prevents them from striking each other, which can cause premature wear, stress on the shaft, and chattering.\u003cbr\u003e\u003cbr\u003e• Compact Wafer design for lightweight and space saving.\u003cbr\u003e\u003cbr\u003e• Bodies are designed to accommodate 110% flow of equivalent pipe size.\u003cbr\u003e\u003cbr\u003e• 302SS springs are standard. Many variations in material and weight are available on specification, consult factory.\u003cbr\u003e\u003cbr\u003e• Designed to fit within ANSI bolt circles.\u003cbr\u003e\u003cbr\u003e•Can be installed horizontally or vertically. - Consult factory for downward vertical flow applications. - In    horizontal applications, shaft should be in vertical orientation.\u003cbr\u003e\u003cbr\u003e• Good piping practice recommends installing a distance of 5 to 10 pipe diameters from elbows, pumps, or others turbulence-creating devices.\u003cbr\u003e\u003cbr\u003e \u003cbr\u003e\u003cbr\u003eApprovals\/Specifications\u003cbr\u003e• Applicable ASTM, ANSI, and API standards\u003cbr\u003e• FM Approved\u003cbr\u003e- Model 71, sizes 2\" - 16\" - Domestic Only\u003cbr\u003e• UL Listed \/ ULC Listed\u003cbr\u003e- Model 71U, sizes 4\", 6\", 8\", 10\", and 12\"","brand":"Lehigh Valley Valve","offers":[{"title":"2 in","offer_id":53842778685715,"sku":"71AHH-3H-N-2","price":150.93,"currency_code":"USD","in_stock":true},{"title":"2.5 in","offer_id":53842778718483,"sku":"71AHH-3H-N-25","price":174.5,"currency_code":"USD","in_stock":true},{"title":"3 in","offer_id":53842778751251,"sku":"71AHH-3H-N-3","price":201.12,"currency_code":"USD","in_stock":true},{"title":"4 in","offer_id":53842778784019,"sku":"71AHH-3H-N-4","price":258.91,"currency_code":"USD","in_stock":true},{"title":"5 in","offer_id":53842778816787,"sku":"71AHH-3H-N-5","price":391.59,"currency_code":"USD","in_stock":true},{"title":"6 in","offer_id":53842778849555,"sku":"71AHH-3H-N-6","price":459.27,"currency_code":"USD","in_stock":true},{"title":"8 in","offer_id":53842778882323,"sku":"71AHH-3H-N-8","price":936.78,"currency_code":"USD","in_stock":true},{"title":"10 in","offer_id":53842778915091,"sku":"71AHH-3H-N-10","price":1542.05,"currency_code":"USD","in_stock":true},{"title":"12 in","offer_id":53842778947859,"sku":"71AHH-3H-N-12","price":2097.12,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0974\/9856\/2835\/files\/71AHB3-H__01448.1759347630.1280.1280.jpg?v=1771410859","url":"https:\/\/lehighvalleyvalve.myshopify.com\/products\/double-disc-wafer-check-valve-ss-disc-buna-seat-mueller-steam-specialty","provider":"Lehigh Valley Valve","version":"1.0","type":"link"}