{"product_id":"parker-398pd-4-4-compression-double-end-shutoff-pipe-fitting","title":"Parker 398PD-4-4 Compression Double End Shutoff Pipe Fitting","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe PARKER 398PD-4-4 is a brass compression tube double end shutoff pipe fitting designed for fluid and gas line connections in HVAC, plumbing, and industrial service applications. It features a tube-to-pipe end connection configuration with a 1\/4-18 NPTF thread standard, ensuring a pressure-tight seal on tapered pipe threads. Rated to a maximum working pressure of 150 psi and a temperature range of 0 to 150 degrees F, this fitting is suited for moderate-pressure service lines. Licensed tradespeople select this fitting when transitioning from compression tube runs to threaded pipe connections in tight or controlled-access installations.\u003c\/p\u003e\u003cp\u003eThe 398PD-4-4 is used in residential and light commercial HVAC systems, refrigeration line sets, plumbing supply runs, and similar fluid-handling assemblies where a shutoff function at both ends is required. Its double end shutoff design allows the line to be isolated at the fitting itself, reducing system downtime during maintenance or component swap-outs. The brass construction makes it appropriate for water, air, and compatible refrigerant or gas service within its rated limits.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eDouble end shutoff design isolates flow at the fitting for easier servicing\u003c\/li\u003e\n\u003cli\u003eBrass construction provides corrosion resistance for water, air, and compatible fluid service\u003c\/li\u003e\n\u003cli\u003e1\/4-18 NPTF thread ensures a pressure-tight tapered thread connection\u003c\/li\u003e\n\u003cli\u003eTube-to-pipe end configuration transitions compression tube lines to threaded pipe\u003c\/li\u003e\n\u003cli\u003eRated to 150 psi maximum working pressure\u003c\/li\u003e\n\u003cli\u003eOperating temperature range of 0 to 150 degrees F\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an OEM-style replacement or new-installation fitting for compression tube-to-pipe connections requiring a double end shutoff in HVAC, plumbing, and light industrial fluid service assemblies.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation should be performed by a licensed HVAC technician or plumber following applicable IFGC, IPC, or local mechanical codes. De-pressurize and isolate the system completely before removing or installing any compression fitting. Use appropriate tube cutters and deburring tools to ensure a clean, square tube end for reliable compression seal engagement. Do not overtighten the compression nut, as brass fittings can deform under excessive torque.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Brass\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFitting Type\u003c\/strong\u003e: Double End Shutoff Pipe\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnd Connections\u003c\/strong\u003e: Tube x Pipe\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 1\/4-18 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Standard\u003c\/strong\u003e: NPTF\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTube Outside Diameter\u003c\/strong\u003e: 1\/4 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum Working Pressure\u003c\/strong\u003e: 150 psi\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum Temperature\u003c\/strong\u003e: 150 degrees F\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMinimum Temperature\u003c\/strong\u003e: 0 degrees F\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUNSPSC Code\u003c\/strong\u003e: 27121700\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: PARKER\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 398PD-4-4\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"PARKER","offers":[{"title":"Default Title","offer_id":51544053481778,"sku":"398PD-4-4","price":166.73,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/38c727cfadb0727775064fc42ce62122.jpg?v=1785923332","url":"https:\/\/voomisupply.com\/products\/parker-398pd-4-4-compression-double-end-shutoff-pipe-fitting","provider":"Voomi Supply","version":"1.0","type":"link"}