{"product_id":"asab-ddp18-replacement-parts-4-upper-ball-seat","title":"ASAB DDP18 Replacement Parts #4 - Upper Ball Seat","description":"\u003cdiv class=\"flex flex-col text-sm pb-25\"\u003e\n\u003carticle class=\"text-token-text-primary w-full focus:outline-none [--shadow-height:45px] has-data-writing-block:pointer-events-none has-data-writing-block:-mt-(--shadow-height) has-data-writing-block:pt-(--shadow-height) [\u0026amp;:has([data-writing-block])\u0026gt;*]:pointer-events-auto scroll-mt-[calc(var(--header-height)+min(200px,max(70px,20svh)))]\" dir=\"auto\" data-turn-id=\"request-699fb776-2ecc-8399-9934-85dea0dd06b2-15\" data-testid=\"conversation-turn-108\" data-scroll-anchor=\"true\" data-turn=\"assistant\" tabindex=\"-1\"\u003e\n\u003cdiv class=\"text-base my-auto mx-auto pb-10 [--thread-content-margin:--spacing(4)] @w-sm\/main:[--thread-content-margin:--spacing(6)] @w-lg\/main:[--thread-content-margin:--spacing(16)] px-(--thread-content-margin)\"\u003e\n\u003cdiv class=\"[--thread-content-max-width:40rem] @w-lg\/main:[--thread-content-max-width:48rem] mx-auto max-w-(--thread-content-max-width) flex-1 group\/turn-messages focus-visible:outline-hidden relative flex w-full min-w-0 flex-col agent-turn\" tabindex=\"-1\"\u003e\n\u003cdiv class=\"flex max-w-full flex-col grow\"\u003e\n\u003cdiv data-message-author-role=\"assistant\" data-message-id=\"1b7cd42c-932b-41d5-b145-5559a2c8a196\" dir=\"auto\" data-message-model-slug=\"gpt-5-2-thinking\" class=\"min-h-8 text-message relative flex w-full flex-col items-end gap-2 text-start break-words whitespace-normal [.text-message+\u0026amp;]:mt-1\"\u003e\n\u003cdiv class=\"flex w-full flex-col gap-1 empty:hidden first:pt-[1px]\"\u003e\n\u003cdiv class=\"markdown prose dark:prose-invert w-full wrap-break-word light markdown-new-styling\"\u003e\n\u003cp data-start=\"0\" data-end=\"28\"\u003e\u003cstrong\u003ePart Code: ASAB-SDDP18-4\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"30\" data-end=\"395\"\u003eIntroducing the \u003cstrong data-start=\"46\" data-end=\"76\"\u003eASAB DDP18 Upper Ball Seat\u003c\/strong\u003e — a critical check-valve sealing component used in the \u003cstrong data-start=\"132\" data-end=\"163\"\u003eDDP18 Double Diaphragm Pump\u003c\/strong\u003e to ensure the upper check ball seals correctly on each stroke. The ball seat is what gives the check valve its “one-way door” function: it helps prevent backflow, supports stable prime, and keeps flow consistent under cycling load.\u003c\/p\u003e\n\u003cp data-start=\"397\" data-end=\"784\"\u003eWhen an upper ball seat is \u003cstrong data-start=\"424\" data-end=\"472\"\u003eworn, scored, cracked, or packed with debris\u003c\/strong\u003e, you’ll typically see symptoms like \u003cstrong data-start=\"509\" data-end=\"628\"\u003eloss of prime, reduced flow, pulsing\/surging, product creeping back down the suction line, or poor lift performance\u003c\/strong\u003e. Replacing the seat (often along with the ball if it’s marked) restores proper sealing at the valve and brings the pump back to clean, efficient operation.\u003c\/p\u003e\n\u003cp data-start=\"786\" data-end=\"986\"\u003eWhether you’re doing a wet-end service, rebuilding the valve stack, or chasing prime issues that won’t go away, the \u003cstrong data-start=\"902\" data-end=\"919\"\u003eASAB-SDDP18-4\u003c\/strong\u003e is the right part to keep your DDP18 check valve sealing properly.\u003c\/p\u003e\n\u003ch2 data-start=\"993\" data-end=\"1008\"\u003eKey Benefits\u003c\/h2\u003e\n\u003cul data-start=\"1010\" data-end=\"1474\"\u003e\n\u003cli data-start=\"1010\" data-end=\"1071\"\u003e\n\u003cp data-start=\"1012\" data-end=\"1071\"\u003e\u003cstrong data-start=\"1012\" data-end=\"1050\"\u003eDirect replacement upper ball seat\u003c\/strong\u003e for \u003cstrong data-start=\"1055\" data-end=\"1069\"\u003eASAB DDP18\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1072\" data-end=\"1135\"\u003e\n\u003cp data-start=\"1074\" data-end=\"1135\"\u003eRestores proper \u003cstrong data-start=\"1090\" data-end=\"1113\"\u003echeck valve sealing\u003c\/strong\u003e to prevent backflow\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1136\" data-end=\"1215\"\u003e\n\u003cp data-start=\"1138\" data-end=\"1215\"\u003eHelps fix common symptoms: \u003cstrong data-start=\"1165\" data-end=\"1213\"\u003eprime loss, pulsing, reduced flow, poor lift\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1216\" data-end=\"1282\"\u003e\n\u003cp data-start=\"1218\" data-end=\"1282\"\u003eSupports \u003cstrong data-start=\"1227\" data-end=\"1269\"\u003estable priming and consistent delivery\u003c\/strong\u003e under load\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1283\" data-end=\"1348\"\u003e\n\u003cp data-start=\"1285\" data-end=\"1348\"\u003eIdeal to replace during \u003cstrong data-start=\"1309\" data-end=\"1346\"\u003evalve services \/ wet-end rebuilds\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1349\" data-end=\"1421\"\u003e\n\u003cp data-start=\"1351\" data-end=\"1421\"\u003eReduces repeat issues caused by \u003cstrong data-start=\"1383\" data-end=\"1419\"\u003escored or deformed sealing faces\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1422\" data-end=\"1474\"\u003e\n\u003cp data-start=\"1424\" data-end=\"1474\"\u003eWorkshop-ready spare for fast turnaround repairs\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 data-start=\"1481\" data-end=\"1499\"\u003eWhat’s Included\u003c\/h2\u003e\n\u003cul data-start=\"1501\" data-end=\"1548\"\u003e\n\u003cli data-start=\"1501\" data-end=\"1548\"\u003e\n\u003cp data-start=\"1503\" data-end=\"1548\"\u003e\u003cstrong data-start=\"1503\" data-end=\"1528\"\u003eDDP18 Upper Ball Seat\u003c\/strong\u003e — \u003cstrong data-start=\"1531\" data-end=\"1548\"\u003eASAB-SDDP18-4\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 data-start=\"1555\" data-end=\"1572\"\u003eSafety Check\u003c\/h2\u003e\n\u003cul data-start=\"1574\" data-end=\"2385\"\u003e\n\u003cli data-start=\"1574\" data-end=\"1727\"\u003e\n\u003cp data-start=\"1576\" data-end=\"1727\"\u003e\u003cstrong data-start=\"1576\" data-end=\"1611\"\u003eIsolate and depressurise first:\u003c\/strong\u003e Shut off air supply, bleed the airline fully, and confirm the pump is not pressurised before opening the wet end.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1728\" data-end=\"1833\"\u003e\n\u003cp data-start=\"1730\" data-end=\"1833\"\u003e\u003cstrong data-start=\"1730\" data-end=\"1752\"\u003eChemical exposure:\u003c\/strong\u003e Wear gloves and eye protection — product can remain trapped in valve chambers.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1834\" data-end=\"1968\"\u003e\n\u003cp data-start=\"1836\" data-end=\"1968\"\u003e\u003cstrong data-start=\"1836\" data-end=\"1857\"\u003eKeep parts clean:\u003c\/strong\u003e Dirt on the seat face will cause instant sealing issues — clean the valve cavity and seat area before refit.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1969\" data-end=\"2105\"\u003e\n\u003cp data-start=\"1971\" data-end=\"2105\"\u003e\u003cstrong data-start=\"1971\" data-end=\"2000\"\u003eInspect the ball as well:\u003c\/strong\u003e If the ball is scored, swollen, or out-of-round, replace it too — a new seat won’t fix a damaged ball.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2106\" data-end=\"2221\"\u003e\n\u003cp data-start=\"2108\" data-end=\"2221\"\u003e\u003cstrong data-start=\"2108\" data-end=\"2128\"\u003eEven reassembly:\u003c\/strong\u003e Tighten fasteners in a cross pattern to avoid warping valve parts and creating leak paths.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2222\" data-end=\"2385\"\u003e\n\u003cp data-start=\"2224\" data-end=\"2385\"\u003e\u003cstrong data-start=\"2224\" data-end=\"2243\"\u003eTest gradually:\u003c\/strong\u003e Bring air pressure up slowly, prime at low pressure first, and confirm smooth cycling and consistent flow before returning to full operation.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cstrong data-start=\"2392\" data-end=\"2445\" data-is-last-node=\"\"\u003eASAB – Engineered for Performance, Built to Last.\u003c\/strong\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/article\u003e\n\u003c\/div\u003e","brand":"Australian Spray \u0026 Blast","offers":[{"title":"Default Title","offer_id":48349960011991,"sku":"ASAB-SDDP18-4","price":8.8,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0735\/9925\/4743\/files\/ASABLOGO.jpg?v=1773006894","url":"https:\/\/asab.au\/products\/asab-ddp18-replacement-parts-4-upper-ball-seat","provider":"Australian Spray \u0026 Blast","version":"1.0","type":"link"}