{"product_id":"asab-s7-s8-piston-valve","title":"ASAB S Series - Replacement S7\/S8 Piston Valve","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-WEB:0947b895-7267-427a-b7ec-2d60aab9c5b7-33\" data-testid=\"conversation-turn-30\" 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=\"680f697d-081b-4d6f-ae30-c57258be26ed\" dir=\"auto\" 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\" data-message-model-slug=\"gpt-5-2-thinking\"\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=\"401\"\u003eThe \u003cstrong data-start=\"33\" data-end=\"55\"\u003eS7\/S8 Piston Valve\u003c\/strong\u003e is a primary sealing and flow-control component in the ASAB S7 and S8 fluid section. It plays a major role in how efficiently the pump \u003cstrong data-start=\"191\" data-end=\"246\"\u003emoves material, builds pressure, and holds pressure\u003c\/strong\u003e during operation. When the piston valve is sealing correctly, the sprayer primes more reliably, runs smoother, and maintains consistent output under load.\u003c\/p\u003e\n\u003cp data-start=\"403\" data-end=\"717\"\u003eIf you’re seeing \u003cstrong data-start=\"420\" data-end=\"515\"\u003eslow priming, pressure pulsing, fading pressure while spraying, or inconsistent performance\u003c\/strong\u003e, a worn, scored, sticking, or debris-affected piston valve is often the reason. Replacing it is a straightforward way to restore proper sealing and bring the pump back to stable, predictable operation.\u003c\/p\u003e\n\u003cp data-start=\"719\" data-end=\"735\"\u003e\u003cstrong data-start=\"719\" data-end=\"735\"\u003eKey features\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"736\" data-end=\"1039\"\u003e\n\u003cli data-start=\"736\" data-end=\"802\"\u003e\n\u003cp data-start=\"738\" data-end=\"802\"\u003eSupports dependable \u003cstrong data-start=\"758\" data-end=\"785\"\u003epressure build and hold\u003c\/strong\u003e in \u003cstrong\u003eS7\/S8 pumps\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"803\" data-end=\"893\"\u003e\n\u003cp data-start=\"805\" data-end=\"893\"\u003eHelps reduce \u003cstrong data-start=\"818\" data-end=\"829\"\u003epulsing\u003c\/strong\u003e, \u003cstrong data-start=\"831\" data-end=\"847\"\u003eprime issues\u003c\/strong\u003e, and \u003cstrong data-start=\"853\" data-end=\"870\"\u003epressure drop\u003c\/strong\u003e linked to valve wear\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"894\" data-end=\"972\"\u003e\n\u003cp data-start=\"896\" data-end=\"972\"\u003eIdeal replacement when the valve is \u003cstrong data-start=\"932\" data-end=\"970\"\u003eworn, scored, leaking, or sticking\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"973\" data-end=\"1039\"\u003e\n\u003cp data-start=\"975\" data-end=\"1039\"\u003eSuits \u003cstrong data-start=\"981\" data-end=\"997\"\u003eASAB S7 \/ S8\u003c\/strong\u003e pump assemblies (configuration dependent)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1041\" data-end=\"1060\"\u003e\u003cstrong data-start=\"1041\" data-end=\"1060\"\u003eWhat’s included\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"1061\" data-end=\"1111\"\u003e\n\u003cli data-start=\"1061\" data-end=\"1111\"\u003e\n\u003cp data-start=\"1063\" data-end=\"1111\"\u003e\u003cstrong data-start=\"1063\" data-end=\"1089\"\u003e1 x S7\/S8 Piston Valve\u003c\/strong\u003e (service replacement)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1113\" data-end=\"1131\"\u003e\u003cstrong data-start=\"1113\" data-end=\"1131\"\u003eSafety Check\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"1132\" data-end=\"1659\" data-is-last-node=\"\" data-is-only-node=\"\"\u003e\n\u003cli data-start=\"1132\" data-end=\"1249\"\u003e\n\u003cp data-start=\"1134\" data-end=\"1249\"\u003e\u003cstrong data-start=\"1134\" data-end=\"1164\"\u003eRelieve all fluid pressure\u003c\/strong\u003e before opening the fluid section (follow the sprayer’s pressure relief procedure).\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1250\" data-end=\"1318\"\u003e\n\u003cp data-start=\"1252\" data-end=\"1318\"\u003e\u003cstrong data-start=\"1252\" data-end=\"1269\"\u003eIsolate power\u003c\/strong\u003e (unplug\/disconnect) before servicing the pump.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1319\" data-end=\"1430\"\u003e\n\u003cp data-start=\"1321\" data-end=\"1430\"\u003e\u003cstrong data-start=\"1321\" data-end=\"1334\"\u003eWear PPE:\u003c\/strong\u003e eye protection and chemical-resistant gloves—especially during flushing and solvent exposure.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1431\" data-end=\"1534\"\u003e\n\u003cp data-start=\"1433\" data-end=\"1534\"\u003e\u003cstrong data-start=\"1433\" data-end=\"1454\"\u003eInjection hazard:\u003c\/strong\u003e never check for leaks with your hand; high-pressure fluid can penetrate skin.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1535\" data-end=\"1659\" data-is-last-node=\"\"\u003e\n\u003cp data-start=\"1537\" data-end=\"1659\" data-is-last-node=\"\"\u003e\u003cstrong data-start=\"1537\" data-end=\"1559\"\u003eRestart carefully:\u003c\/strong\u003e prime at low pressure first, confirm stable pressure and no leaks, then return to normal operation.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\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":48301185827031,"sku":"ASAB-SS7.S8-30","price":29.92,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0735\/9925\/4743\/files\/S7-S8PISTONVALVE.jpg?v=1771390858","url":"https:\/\/asab.au\/products\/asab-s7-s8-piston-valve","provider":"Australian Spray \u0026 Blast","version":"1.0","type":"link"}