{"product_id":"spears-436-pvc-male-adapter-mnpt-x-socket","title":"Spears® 436 Series PVC Male Adapter, MNPT × Socket, SCH 40, Domestic — 3\/4 in. or 1 in.","description":"\u003cp\u003eThe Spears® 436 series is the male adapter you pull off the shelf when a 1 in. PVC schedule 40 lateral needs to thread into a brass valve, pump fitting, irrigation valve manifold, or any female-NPT-threaded port. Male NPT threads on one end, smooth solvent-weld socket on the other. Molded white PVC, Spears USA, domestic-manufactured to schedule 40 \/ standard dimensions, NSF-certified for potable water.\u003c\/p\u003e\n\u003ch3\u003eWhy You’d Reach for a 436\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMale NPT (MIPT \/ MNPT) outlet\u003c\/strong\u003e — tapered male pipe thread per ANSI \/ ASME B1.20.1; mates with any female NPT fitting (brass, PVC, ductile iron, etc.) using PTFE tape or pipe dope\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSolvent-weld socket inlet\u003c\/strong\u003e — primed and cemented for a chemically-welded joint to schedule 40 PVC pipe; joint is as strong as the pipe wall\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMolded PVC (Type I), white\u003c\/strong\u003e — chemically resistant to dirt, soil acids, irrigation fertilizers, chlorine, and typical municipal-water chemistry\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSchedule 40 \/ standard dimensions\u003c\/strong\u003e — matches any schedule 40 PVC pipe and fitting; full pressure rating in the system\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDomestic, U.S. manufacture\u003c\/strong\u003e — Spears computer-stress-analyzed mold design with reinforced material at thread roots; NSF-pw certified for potable water service\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength: 1-23\/32 in. (3\/4 in. variant) \/ 2-1\/16 in. (1 in. variant)\u003c\/strong\u003e — standard footprint, fits any valve manifold or trench layout\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhere It Fits in the System\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSprinkler valve manifold:\u003c\/strong\u003e threads a Hunter PGV, Rain Bird DV, or similar female-NPT-threaded valve into a PVC lateral. The PVC side solvent-welds to schedule 40; the threaded side tapes-and-tightens into the valve inlet\/outlet.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePump suction \/ discharge plumbing:\u003c\/strong\u003e the brass \/ cast iron pump bodies of Goulds, Pentair, etc. take MNPT pipe threads. The 436 makes the transition from rigid PVC suction line to the threaded pump port.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePond and water feature equipment:\u003c\/strong\u003e skimmer, return jet, UV sterilizer, and most pond filter bulkheads use female NPT ports.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBulkhead and tank fittings:\u003c\/strong\u003e filter housings, expansion tanks, and storage cisterns have MNPT or FNPT bosses; the 436 transitions PVC plumbing onto the threaded interface.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eField hose-bib and frost-free connections:\u003c\/strong\u003e brass hose bibs \/ frost-free hydrants on the wall side accept the 436’s MNPT directly.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSize Differences\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e3\/4 in. (Model 436-007, SKU 50811)\u003c\/strong\u003e — 3\/4 in. nominal pipe, 1-23\/32 in. overall length, 1-5\/16 in. width across flats. The size for typical residential sprinkler lateral runs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1 in. (Model 436-010, SKU 50805)\u003c\/strong\u003e — 1 in. nominal pipe, 2-1\/16 in. overall length, 1-5\/8 in. width across flats. The size for sprinkler mainlines, pump discharge, and most pond \/ pool plumbing.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eManufacturer: Spears Manufacturing Company\u003c\/li\u003e\n\u003cli\u003eSeries: 436 (standard SCH 40 male adapter, MNPT × Socket)\u003c\/li\u003e\n\u003cli\u003eType: standard male adapter, schedule 40 PVC\u003c\/li\u003e\n\u003cli\u003eInlet: solvent-weld socket (slip)\u003c\/li\u003e\n\u003cli\u003eOutlet: male NPT thread (MIPT \/ MNPT)\u003c\/li\u003e\n\u003cli\u003eMaterial: PVC, Type I, molded white\u003c\/li\u003e\n\u003cli\u003ePressure rating: matches schedule 40 PVC pipe of the same nominal size\u003c\/li\u003e\n\u003cli\u003eOperating temperature: 33°F to 140°F (PVC max service temperature)\u003c\/li\u003e\n\u003cli\u003eOrigin: domestic, U.S.A.\u003c\/li\u003e\n\u003cli\u003eCertifications: NSF-pw (potable water service), Spears USA mark\u003c\/li\u003e\n\u003cli\u003eReference standard: ASTM D2466 (PVC pressure fittings)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eInstallation Notes\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eThreaded end into female NPT fitting:\u003c\/strong\u003e 2 to 3 wraps of PTFE thread tape (or pipe dope) on the male threads, going in the direction of tightening (clockwise looking at the male end). Hand-tighten plus 1 to 2 turns with a strap wrench. DO NOT over-tighten — PVC threads cannot take the same torque as steel. If you can’t stop a leak at hand-tight + 2 turns, replace the tape and try again rather than cranking harder. Over-tightening is the #1 cause of cracked PVC male adapters in the field.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSocket end onto PVC pipe:\u003c\/strong\u003e Apply Spears P-70 (or equivalent) PVC primer to both the pipe end and the inside of the socket. Apply medium-bodied PVC solvent cement to both surfaces. Push the pipe fully into the socket and rotate 1\/4 turn to spread the cement. Hold for 30 seconds. Cure 1 hour before low-pressure water test; 24 hours before full operating pressure.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSealing strategy at the threaded joint:\u003c\/strong\u003e The taper of NPT threads should self-seal at the apex of the thread engagement — the PTFE tape is a lubricant and a gap-filler, not the primary seal. If the joint leaks at proper torque, the threads are damaged or the fitting is over-tightened. Replace the part rather than adding more tape.\u003c\/p\u003e\n\u003ch3\u003eWhat’s in the Box\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eOne Spears 436 series male adapter in your selected nominal size (3\/4 in. or 1 in.), bulk-packed\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eCompatible Accessories — Sold Separately\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003ePTFE thread tape (white for PVC; pink heavy-duty for stainless \/ metal-on-metal)\u003c\/li\u003e\n\u003cli\u003eSpears P-70 PVC primer (purple) for the socket joint\u003c\/li\u003e\n\u003cli\u003eSpears PVC solvent cement (medium body, for pipe up to 6 in.)\u003c\/li\u003e\n\u003cli\u003eStrap wrench (the right tool to tighten PVC male adapters without crushing the threads)\u003c\/li\u003e\n\u003cli\u003eSchedule 40 PVC pipe and additional fittings (couplings, tees, elbows)\u003c\/li\u003e\n\u003cli\u003eSpears 474 series insert adapters (insert × socket) for transitions to flexible poly\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eStop by Garoppo’s to pick one up, or schedule local delivery within our service area.\u003c\/p\u003e","brand":"Spears","offers":[{"title":"3\/4\"","offer_id":54227619643684,"sku":"50811","price":1.19,"currency_code":"USD","in_stock":true},{"title":"1\"","offer_id":54227619676452,"sku":"50805","price":0.69,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0968\/5322\/9860\/files\/spears-436-male-adapter-mnpt-x-socket-pvc_fd6ca1a6-fa2c-4725-ab8f-7ed762b645a0.png?v=1780510476","url":"https:\/\/garoppos.com\/products\/spears-436-pvc-male-adapter-mnpt-x-socket","provider":"Garoppo's Stone \u0026 Garden Center and Feed \u0026 Pet Supply","version":"1.0","type":"link"}