{"product_id":"kingston-620-3-pneumatic-automatic-tank-drain","title":"Kingston 620-3 Pneumatic Automatic Tank Drain Valve, 3\/8 in NPT Inlet, Brass","description":"\u003cp\u003eThe Kingston 620-3 is a pneumatically operated automatic drain valve for air compressor receivers. It runs on the compressor's own air with no electrical supply, no timer and nothing to program, so the tank gets drained whether or not anyone remembers to do it.\u003c\/p\u003e\n\u003cp\u003eCondensate left in a receiver does real damage: it corrodes the shell from the inside, carries water downstream into tools and finishes, and shortens the life of the vessel. A manual drain only solves that while somebody is still bothering to open it.\u003c\/p\u003e\n\u003ch3\u003eSpecification\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart number:\u003c\/strong\u003e S1071, Kingston 620-3\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInlet:\u003c\/strong\u003e 3\/8 in NPT female\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutlet:\u003c\/strong\u003e 1\/4 in NPT female\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBody:\u003c\/strong\u003e brass\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum pressure:\u003c\/strong\u003e 400 PSI\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperature range:\u003c\/strong\u003e -40 to 225 F\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOperation:\u003c\/strong\u003e pneumatic, no electrical supply required\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhere it suits\u003c\/h3\u003e\n\u003cp\u003eShop and industrial reciprocating compressors, and any installation where running power out to a drain point is awkward. The 400 PSI rating gives it a lot of headroom over normal shop pressures, and the brass body holds up better than plated steel in constant contact with condensate.\u003c\/p\u003e\n\u003cp\u003eFor a zero air loss drain on a larger or continuously loaded system, look at the Drain-All pneumatic drains. For a timed electric drain we stock those from 1\/4 in through 1 in.\u003c\/p\u003e\n\u003ch3\u003eFitting it\u003c\/h3\u003e\n\u003cp\u003eBlow the tank down to zero and confirm it on the gauge before you open the drain port. Fit the drain at the lowest point of the receiver; plumbed any higher it leaves a permanent pool of water underneath it. Pipe the discharge to a place you are happy for oily water to go, keep that line short and no smaller than the outlet, and avoid running it uphill.\u003c\/p\u003e\n\u003cp\u003eUse pipe thread sealant rather than tape. Tape shreds and ends up on the seat, and a drain valve held open by debris bleeds the tank continuously.\u003c\/p\u003e\n\u003ch3\u003eRelated parts\u003c\/h3\u003e\n\u003cp\u003eWe also stock the Conrader WV-1 pneumatic automatic drain, Drain-All zero air loss drains, electronic timed drains, bucket high drop leg drains and pet cock tank drains.\u003c\/p\u003e\n\u003cp\u003eKingston 620-3 pneumatic automatic tank drain valve with a 3\/8 in NPT female inlet and 1\/4 in NPT female outlet, brass body, rated to 400 PSI.\u003c\/p\u003e","brand":"AirComParts","offers":[{"title":"620-3 - 3\/8 in NPT inlet","offer_id":67734913876243,"sku":"S1071","price":124.99,"currency_code":"USD","in_stock":true}],"url":"https:\/\/aircompressorstore.com\/products\/kingston-620-3-pneumatic-automatic-tank-drain","provider":"Warthog Air Compressor Store","version":"1.0","type":"link"}