{"product_id":"yamada-802971-diaphragm-pump-air-valve-block-assembly","title":"Yamada 802971 Diaphragm Pump Air Valve Block Assembly","description":"\u003ch3 data-end=\"18\" data-start=\"0\" data-section-id=\"nq8ynu\"\u003eDescription:\u003c\/h3\u003e\n\u003cp data-end=\"552\" data-start=\"19\"\u003eThe Yamada 802971 Air Valve Block Assembly is a pneumatic control component used in air-operated double diaphragm (AODD) pump systems to regulate and distribute compressed air for diaphragm actuation. It is commonly used in Yamada NDP-40, NDP-50, and NDP-80 series pumps where precise air switching is required for continuous pumping operation. Maintenance teams, OEMs, and integrators purchase this assembly for replacement of worn air valve blocks, preventative maintenance, and restoration of proper pump cycling and efficiency.\u003c\/p\u003e\n\u003ch3 data-end=\"573\" data-start=\"554\" data-section-id=\"plkbhx\"\u003eApplications:\u003c\/h3\u003e\n\u003cp data-end=\"1008\" data-start=\"574\"\u003eThe Yamada 802971 air valve block assembly is used in industrial fluid handling environments where AODD pumps are required for reliable, continuous-duty operation. It is commonly deployed in chemical processing, wastewater treatment, coatings, and bulk fluid transfer systems where consistent air distribution ensures stable diaphragm movement, reduced pulsation, and improved system longevity.\u003c\/p\u003e\n\u003ch3 data-end=\"1041\" data-start=\"1010\" data-section-id=\"68ulmp\"\u003eTechnical Specifications:\u003c\/h3\u003e\n\u003cp data-end=\"1796\" data-start=\"1042\"\u003e• Manufacturer: Yamada Corporation\u003cbr data-end=\"1079\" data-start=\"1076\"\u003e• Part Number: 802971\u003cbr data-end=\"1103\" data-start=\"1100\"\u003e• Product Type: Air valve block assembly\u003cbr data-end=\"1146\" data-start=\"1143\"\u003e• Function: Controls and distributes compressed air for diaphragm actuation\u003cbr data-end=\"1224\" data-start=\"1221\"\u003e• Application: AODD diaphragm pumps (NDP-40 \/ 50 \/ 80 series) \u003cspan data-state=\"closed\" class=\"\"\u003e\u003c\/span\u003e\u003cbr data-end=\"1326\" data-start=\"1323\"\u003e• Operation: Pneumatic air shifting valve system\u003cbr data-end=\"1377\" data-start=\"1374\"\u003e• Components: Valve body, caps, springs, spool assembly, seals \u003cspan data-state=\"closed\" class=\"\"\u003e\u003c\/span\u003e\u003cbr data-end=\"1480\" data-start=\"1477\"\u003e• Installation: Internal air valve section of pump\u003cbr data-end=\"1533\" data-start=\"1530\"\u003e• Weight: ~8 lbs (approx) \u003cspan data-state=\"closed\" class=\"\"\u003e\u003c\/span\u003e\u003cbr data-end=\"1599\" data-start=\"1596\"\u003e• System Role: Drives alternating diaphragm motion for fluid transfer\u003cbr data-end=\"1671\" data-start=\"1668\"\u003e• Compatibility: Yamada diaphragm pump systems\u003cbr data-end=\"1720\" data-start=\"1717\"\u003e• Duty Cycle: Continuous operation\u003cbr data-end=\"1757\" data-start=\"1754\"\u003e• Status: Active OEM replacement part\u003c\/p\u003e\n\u003ch3 data-end=\"1824\" data-start=\"1798\" data-section-id=\"1ln9bp8\"\u003eCommon Replacements:\u003c\/h3\u003e\n\u003cp data-end=\"1898\" data-start=\"1825\"\u003e• Yamada 802971-SVT\u003cbr data-end=\"1847\" data-start=\"1844\"\u003e• Yamada 802971-P1\u003cbr data-end=\"1868\" data-start=\"1865\"\u003e• Yamada air valve repair kits\u003c\/p\u003e","brand":"Yamada","offers":[{"title":"New","offer_id":51733867036974,"sku":null,"price":0.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0940\/0818\/1038\/files\/Ebay_website_image_817b945f-bbc0-4672-9ef1-b4fda41bb49b.jpg?v=1770604012","url":"https:\/\/plgautomation.com\/products\/yamada-802971-diaphragm-pump-air-valve-block-assembly","provider":"PLG Automation ","version":"1.0","type":"link"}