{"product_id":"ws440-s3-316","title":"WS440-S3-316","description":"\u003cp\u003eThe WaStop Inline check valve installs in stormwater systems and outlets, providing immediate protection against flooding and backflow. Its unique, simple, and effective design also prevents unwanted odour, especially at outlets in tidal environments. The standard variant is supplied with an EPDM gasket and mounting tabs.\u003c\/p\u003e\n\u003c!-- ns-spec:start --\u003e\u003cdiv class=\"ns-spec\" style=\"margin-top:28px;border-top:1px solid #e6e9ee;padding-top:22px\"\u003e\n\u003ch3 style=\"font-size:20px;color:#0d1b2a;margin:0 0 14px\"\u003eTechnical specification\u003c\/h3\u003e\n\u003ctable style=\"border-collapse:collapse;font-size:14.5px;line-height:1.5\"\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:6px 14px 6px 0;color:#5f6e80;white-space:nowrap\"\u003eNominal diameter\u003c\/td\u003e\n\u003ctd style=\"padding:6px 0;font-weight:600;color:#0d1b2a\"\u003eDN 450 (NPS 18)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:6px 14px 6px 0;color:#5f6e80;white-space:nowrap\"\u003eMax. Flow Velocity\u003c\/td\u003e\n\u003ctd style=\"padding:6px 0;font-weight:600;color:#0d1b2a\"\u003e3 m\/s (9.8 fps)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:6px 14px 6px 0;color:#5f6e80;white-space:nowrap\"\u003eWeight\u003c\/td\u003e\n\u003ctd style=\"padding:6px 0;font-weight:600;color:#0d1b2a\"\u003e25 kg (55.1 lb)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:6px 14px 6px 0;color:#5f6e80;white-space:nowrap\"\u003e# Bolt holes (#B)\u003c\/td\u003e\n\u003ctd style=\"padding:6px 0;font-weight:600;color:#0d1b2a\"\u003e4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:6px 14px 6px 0;color:#5f6e80;white-space:nowrap\"\u003eBolt Circle Diameter (BCD)\u003c\/td\u003e\n\u003ctd style=\"padding:6px 0;font-weight:600;color:#0d1b2a\"\u003e585 mm (23 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:6px 14px 6px 0;color:#5f6e80;white-space:nowrap\"\u003eDimension\u003c\/td\u003e\n\u003ctd style=\"padding:6px 0;font-weight:600;color:#0d1b2a\"\u003e443 mm (17.4 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:6px 14px 6px 0;color:#5f6e80;white-space:nowrap\"\u003eValve body length (L)\u003c\/td\u003e\n\u003ctd style=\"padding:6px 0;font-weight:600;color:#0d1b2a\"\u003e840 mm (33.1 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:6px 14px 6px 0;color:#5f6e80;white-space:nowrap\"\u003eOuter Ø (OD)\u003c\/td\u003e\n\u003ctd style=\"padding:6px 0;font-weight:600;color:#0d1b2a\"\u003e443 mm (17.4 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:6px 14px 6px 0;color:#5f6e80;white-space:nowrap\"\u003eOD incl. gasket (ODG)\u003c\/td\u003e\n\u003ctd style=\"padding:6px 0;font-weight:600;color:#0d1b2a\"\u003e467 mm (18.4 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:6px 14px 6px 0;color:#5f6e80;white-space:nowrap\"\u003eØ Bolt Holes (ØB)\u003c\/td\u003e\n\u003ctd style=\"padding:6px 0;font-weight:600;color:#0d1b2a\"\u003e10.5 mm (0.4 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:6px 14px 6px 0;color:#5f6e80;white-space:nowrap\"\u003eMax. Flow Volume\u003c\/td\u003e\n\u003ctd style=\"padding:6px 0;font-weight:600;color:#0d1b2a\"\u003e478 l\/s (7576.5 GPM)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:6px 14px 6px 0;color:#5f6e80;white-space:nowrap\"\u003eMax.  ID Host Pipe\u003c\/td\u003e\n\u003ctd style=\"padding:6px 0;font-weight:600;color:#0d1b2a\"\u003e464 mm (18.3 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:6px 14px 6px 0;color:#5f6e80;white-space:nowrap\"\u003eMin.  ID Host Pipe\u003c\/td\u003e\n\u003ctd style=\"padding:6px 0;font-weight:600;color:#0d1b2a\"\u003e446 mm (17.6 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:6px 14px 6px 0;color:#5f6e80;white-space:nowrap\"\u003eFasteners mtrl.\u003c\/td\u003e\n\u003ctd style=\"padding:6px 0;font-weight:600;color:#0d1b2a\"\u003e316L stainless steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:6px 14px 6px 0;color:#5f6e80;white-space:nowrap\"\u003eGasket\u003c\/td\u003e\n\u003ctd style=\"padding:6px 0;font-weight:600;color:#0d1b2a\"\u003eEPDM\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003cdiv style=\"margin-top:20px;display:flex;flex-wrap:wrap;gap:10px\"\u003e\n\u003ca href=\"https:\/\/files.wapro.io\/wastop\/tech-spec_ws_en-gb.pdf\" target=\"_blank\" rel=\"noopener\" style=\"display:inline-flex;align-items:center;gap:6px;padding:9px 16px;border:1.5px solid #019ee3;border-radius:8px;color:#019ee3;font-weight:600;text-decoration:none;font-size:14px\"\u003e↓ Product sheet (PDF)\u003c\/a\u003e\u003ca href=\"https:\/\/files.wapro.io\/wastop\/ws440\/tech-spec_ws440_en-gb.pdf\" target=\"_blank\" rel=\"noopener\" style=\"display:inline-flex;align-items:center;gap:6px;padding:9px 16px;border:1.5px solid #019ee3;border-radius:8px;color:#019ee3;font-weight:600;text-decoration:none;font-size:14px\"\u003e↓ Technical specification (PDF)\u003c\/a\u003e\u003ca href=\"https:\/\/files.wapro.io\/wastop\/ws440\/ws440_en.pdf\" target=\"_blank\" rel=\"noopener\" style=\"display:inline-flex;align-items:center;gap:6px;padding:9px 16px;border:1.5px solid #019ee3;border-radius:8px;color:#019ee3;font-weight:600;text-decoration:none;font-size:14px\"\u003e↓ Dimensional drawing (PDF)\u003c\/a\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\u003c!-- ns-spec:end --\u003e","brand":"Nord Seal","offers":[{"title":"Default Title","offer_id":47604086669526,"sku":null,"price":7450.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0793\/5446\/2422\/files\/Untitleddesign_74_aadb63fb-4310-481e-8224-007ec760a163.png?v=1765646719","url":"https:\/\/nordseal.com\/products\/ws440-s3-316","provider":"NordSeal","version":"1.0","type":"link"}