{"product_id":"400g-pump-diaphragm","title":"400G Pump Diaphragm","description":"\u003ch1\u003e400G \u003ca href=\"https:\/\/puritech.co.za\/product-category\/pumps\/\"\u003ePump\u003c\/a\u003e Diaphragm\u003c\/h1\u003e \u003cp data-start=\"1000\" data-end=\"1275\"\u003eThe 400 GPD pump Diaphragm plays a crucial role in any 400 GPD reverse‑osmosis (RO) booster pump. It seals the valve block, the lower base, and the pump‑head cover — while also separating the water chamber from the motor assembly.\u003c\/p\u003e \u003cp data-start=\"1277\" data-end=\"1723\"\u003eBecause it creates this sealed barrier, the diaphragm prevents water from reaching the motor; this safeguards the pump’s electric components and avoids potential damage. Additionally, by maintaining a proper seal and correct pressure, the diaphragm ensures that your RO system delivers consistent flow and pressure, which is essential for optimal membrane performance.\u003c\/p\u003e \u003cp data-start=\"1725\" data-end=\"2104\"\u003eOver time, diaphragms tend to lose elasticity or suffer wear, which can cause pressure loss or leaks between the base and cover, and even allow water ingress into the motor compartment. Replacing a worn diaphragm with the 400G Pump Diaphragm restores proper sealing, recovers pressure levels, and prevents leakage or motor damage.\u003c\/p\u003e \u003cp data-start=\"2106\" data-end=\"2423\"\u003eMade from non‑porous, chemical‑resistant vulcanized rubber, this diaphragm withstands the demands of repeated cycles in RO setups. Under normal household use, it delivers reliable service for about \u003cstrong data-start=\"2342\" data-end=\"2355\"\u003e3–4 years\u003c\/strong\u003e before needing replacement.\u003c\/p\u003e \u003cp data-start=\"2425\" data-end=\"2651\"\u003eIn short: installing the 400G Pump Diaphragm ensures safer, more efficient, and longer‑lasting RO booster pump performance — whether you run your system at home, in a water shop, or for light commercial purification.\u003c\/p\u003e \u003ch3 data-start=\"2658\" data-end=\"2688\"\u003eKey Features \u0026amp; Benefits\u003c\/h3\u003e \u003cul\u003e \u003cli data-start=\"2692\" data-end=\"2816\"\u003e\n\u003cstrong data-start=\"2692\" data-end=\"2735\"\u003eDirect replacement for 400 GPD RO pumps\u003c\/strong\u003e — ensures compatibility and correct fit.\u003c\/li\u003e \u003cli data-start=\"2819\" data-end=\"2969\"\u003e\n\u003cstrong data-start=\"2819\" data-end=\"2862\"\u003eSeals valve block, base, and pump cover\u003c\/strong\u003e — prevents water leakage and protects motor from moisture ingress.\u003c\/li\u003e \u003cli data-start=\"2972\" data-end=\"3104\"\u003e\n\u003cstrong data-start=\"2972\" data-end=\"3010\"\u003eMaintains stable pressure and flow\u003c\/strong\u003e — essential for consistent RO membrane performance.\u003c\/li\u003e \u003cli data-start=\"3107\" data-end=\"3255\"\u003e\n\u003cstrong data-start=\"3107\" data-end=\"3153\"\u003eMade of durable, chemical‑resistant rubber\u003c\/strong\u003e — resists wear and chemical exposure for long service life.\u003c\/li\u003e \u003cli data-start=\"3258\" data-end=\"3399\"\u003e\n\u003cstrong data-start=\"3258\" data-end=\"3277\"\u003eEasy to replace\u003c\/strong\u003e — keeps maintenance simple, making it an ideal part for routine RO pump upkeep.\u003c\/li\u003e \u003cli data-start=\"3402\" data-end=\"3557\"\u003e\n\u003cstrong data-start=\"3402\" data-end=\"3439\"\u003eExtends pump life and reliability\u003c\/strong\u003e — prevents motor damage, reduces leaks, and maintains performance over time.\u003c\/li\u003e \u003c\/ul\u003e \u003ch3 data-start=\"3564\" data-end=\"3603\"\u003eTypical Applications \u0026amp; Use Cases\u003c\/h3\u003e \u003cp data-start=\"3605\" data-end=\"3669\"\u003eYou should consider using the 400G Pump Diaphragm for:\u003c\/p\u003e \u003cul\u003e \u003cli data-start=\"3673\" data-end=\"3764\"\u003eMaintenance or repair of 400 GPD RO booster pumps in domestic water‑purification systems.\u003c\/li\u003e \u003cli data-start=\"3767\" data-end=\"3879\"\u003eWater shops, bottled water facilities, or small commercial RO setups that require stable and safe performance.\u003c\/li\u003e \u003cli data-start=\"3882\" data-end=\"3975\"\u003eRegular replacement schedules (every 3–4 years) to avoid pump wear, leaks, or motor damage.\u003c\/li\u003e \u003cli data-start=\"3978\" data-end=\"4075\"\u003eUpgrading older or worn-out pump heads to restore pressure, efficiency, and system reliability.\u003c\/li\u003e \u003cli data-start=\"4078\" data-end=\"4209\"\u003eAny clean-water filtration system where a 400 GPD pump is used (e.g., under-sink RO, countertop purifiers, commercial dispensers).\u003c\/li\u003e \u003c\/ul\u003e","brand":"Monster Mechanical","offers":[{"title":"Default","offer_id":45115703951429,"sku":"DIAPHRAM400G","price":227.7,"currency_code":"ZAR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0739\/8627\/7445\/files\/ro-booster-pump-diaphragm.jpg?v=1780903207","url":"https:\/\/www.monstermechanical.co.za\/products\/400g-pump-diaphragm","provider":"Monster Mechanical","version":"1.0","type":"link"}