{"product_id":"vacuum-pumps-2508-a-twin-head-wob-l-piston-vacuum-pump","title":"Dual Piston Vacuum Pump","description":"\u003cdiv class=\"product-overview\"\u003e\n  \u003ch2\u003eProduct Overview\u003c\/h2\u003e\n  \u003cp\u003eThe 2508-A Twin-Head WOB-L Piston Vacuum Pump is a compact, oil-less vacuum pump built for laboratory, industrial, and composites applications that need higher vacuum flow. Running on standard 115V \/ 60Hz power, it delivers up to 4.11 cfm (116.4 L\/min) of open flow and pulls a maximum vacuum of 26.6 in-Hg (91%), nearly double the open flow of a single-head pump, making it well suited to larger vacuum infusion setups and higher-demand lab or industrial vacuum tasks.\u003c\/p\u003e\n  \u003cp\u003eBecause the 2508-A uses a low-vibration, twin-head WOB-L piston mechanism instead of an oil-lubricated design, process air stays free of lubricant contamination while still delivering higher flow than a single-head pump. A thermally protected motor (145 °C ± 5 °C cutoff) safeguards against overheating, while the pump's compact, panel-mountable footprint (7.18 × 9.77 × 9.88 in \/ 182 × 248 × 251 mm) makes it easy to integrate into existing equipment, benchtop setups, or OEM systems.\u003c\/p\u003e\n  \u003cp\u003eWhether you're pulling vacuum for larger resin infusion layups, running a vacuum degassing chamber, or supporting general-purpose lab and industrial vacuum needs where extra flow matters, the 2508-A offers oil-free reliability and higher throughput in a lightweight, easy-to-mount package.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"key-features\"\u003e\n  \u003ch2\u003eKey Features\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eOil-less operation\u003c\/strong\u003e, discharge \/ process air stays free of lubricant contamination.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eTwin-head WOB-L piston design\u003c\/strong\u003e, higher flow with low vibration compared to single-head pumps.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eThermally protected motor\u003c\/strong\u003e, built-in 145 °C ± 5 °C thermal switch helps prevent motor damage from overheating.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eCompact and lightweight\u003c\/strong\u003e, panel-mountable footprint fits easily into existing systems or benchtop setups.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eVersatile vacuum performance\u003c\/strong\u003e, up to 4.11 cfm open flow and 26.6 in-Hg maximum vacuum, ideal for vacuum infusion, degassing, and general lab\/industrial vacuum service.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"specifications\"\u003e\n  \u003ch2\u003eSpecifications\u003c\/h2\u003e\n  \u003ctable\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth\u003eSpecification\u003c\/th\u003e\n        \u003cth\u003eValue\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eModel\u003c\/td\u003e\n        \u003ctd\u003e2508-A\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003ePump Type\u003c\/td\u003e\n        \u003ctd\u003eTwin-head WOB-L piston, oil-less\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eThermal Protection\u003c\/td\u003e\n        \u003ctd\u003eYes (145 °C ± 5 °C)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eOperating Voltage\u003c\/td\u003e\n        \u003ctd\u003e115 V\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eFrequency\u003c\/td\u003e\n        \u003ctd\u003e60 Hz\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMotor Full-Load Current\u003c\/td\u003e\n        \u003ctd\u003e2.9 A (nameplate)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eCapacitor\u003c\/td\u003e\n        \u003ctd\u003e20 mfd\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eOpen Flow @ 60 Hz\u003c\/td\u003e\n        \u003ctd\u003e4.11 cfm (116.4 L\/min)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eFlow @ 15 in-Hg\u003c\/td\u003e\n        \u003ctd\u003e1.88 cfm (53.1 L\/min)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMax Vacuum @ 60 Hz\u003c\/td\u003e\n        \u003ctd\u003e26.6 in-Hg (91%)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eIntake Port\u003c\/td\u003e\n        \u003ctd\u003e1\/4-18 NPT (Port B)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eExhaust Port\u003c\/td\u003e\n        \u003ctd\u003e1\/4-18 NPT (Port A)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eOperating Temperature (Environment)\u003c\/td\u003e\n        \u003ctd\u003e10 °C to 40 °C\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eCord Lead Length\u003c\/td\u003e\n        \u003ctd\u003e6 ft ± 3 in\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eDimensions (W × D × H)\u003c\/td\u003e\n        \u003ctd\u003e7.18 × 9.77 × 9.88 in (182 × 248 × 251 mm)\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"performance\"\u003e\n  \u003ch2\u003ePerformance, Nominal Flow at 115 V \/ 60 Hz\u003c\/h2\u003e\n  \u003ctable\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth\u003eVacuum (in-Hg)\u003c\/th\u003e\n        \u003cth\u003eVacuum (%)\u003c\/th\u003e\n        \u003cth\u003eFlow (cfm)\u003c\/th\u003e\n        \u003cth\u003eFlow (L\/min)\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd\u003e0\u003c\/td\u003e\n        \u003ctd\u003e0%\u003c\/td\u003e\n        \u003ctd\u003e4.11\u003c\/td\u003e\n        \u003ctd\u003e116.4\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003e5\u003c\/td\u003e\n        \u003ctd\u003e17%\u003c\/td\u003e\n        \u003ctd\u003e3.58\u003c\/td\u003e\n        \u003ctd\u003e101.4\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003e10\u003c\/td\u003e\n        \u003ctd\u003e34%\u003c\/td\u003e\n        \u003ctd\u003e2.78\u003c\/td\u003e\n        \u003ctd\u003e78.6\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003e15\u003c\/td\u003e\n        \u003ctd\u003e51%\u003c\/td\u003e\n        \u003ctd\u003e1.88\u003c\/td\u003e\n        \u003ctd\u003e53.1\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003e20\u003c\/td\u003e\n        \u003ctd\u003e68%\u003c\/td\u003e\n        \u003ctd\u003e0.97\u003c\/td\u003e\n        \u003ctd\u003e27.6\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003e25\u003c\/td\u003e\n        \u003ctd\u003e85%\u003c\/td\u003e\n        \u003ctd\u003e0.25\u003c\/td\u003e\n        \u003ctd\u003e7.1\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003e26.6\u003c\/td\u003e\n        \u003ctd\u003e91%\u003c\/td\u003e\n        \u003ctd\u003e0.01\u003c\/td\u003e\n        \u003ctd\u003e0.3\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"common-applications\"\u003e\n  \u003ch2\u003eCommon Applications\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003eVacuum infusion for composites and fiberglass layup, including larger panels needing higher flow\u003c\/li\u003e\n    \u003cli\u003eVacuum degassing and resin\/epoxy bubble removal\u003c\/li\u003e\n    \u003cli\u003eLaboratory vacuum filtration and sample prep\u003c\/li\u003e\n    \u003cli\u003eGeneral industrial vacuum handling and process support\u003c\/li\u003e\n    \u003cli\u003eOEM integration into panel-mounted or benchtop equipment\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"faq\"\u003e\n  \u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\n  \u003ch3\u003eWhat is the maximum vacuum the 2508-A can pull?\u003c\/h3\u003e\n  \u003cp\u003eThe 2508-A reaches a maximum vacuum of 26.6 in-Hg (91%) when operated at 60 Hz.\u003c\/p\u003e\n\n  \u003ch3\u003eWhat is the open flow rate of the 2508-A vacuum pump?\u003c\/h3\u003e\n  \u003cp\u003eAt 60 Hz, the 2508-A produces an open flow rate of 4.11 cfm (116.4 L\/min). At 15 in-Hg of vacuum, flow drops to 1.88 cfm (53.1 L\/min).\u003c\/p\u003e\n\n  \u003ch3\u003eHow does flow change as vacuum increases on the 2508-A?\u003c\/h3\u003e\n  \u003cp\u003eFlow decreases as vacuum depth increases: 4.11 cfm at 0 in-Hg, 3.58 cfm at 5 in-Hg, 2.78 cfm at 10 in-Hg, 1.88 cfm at 15 in-Hg, 0.97 cfm at 20 in-Hg, 0.25 cfm at 25 in-Hg, and 0.01 cfm at its maximum of 26.6 in-Hg.\u003c\/p\u003e\n\n  \u003ch3\u003eIs the 2508-A an oil-less vacuum pump?\u003c\/h3\u003e\n  \u003cp\u003eYes. The 2508-A uses an oil-less, twin-head WOB-L piston design, so the process air and exhaust stay free of lubricant contamination, making it a good fit for applications where clean vacuum is required.\u003c\/p\u003e\n\n  \u003ch3\u003eWhat's the difference between the 2508-A and the single-head 2507-A pump?\u003c\/h3\u003e\n  \u003cp\u003eThe 2508-A uses a twin-head WOB-L piston design instead of a single head, roughly doubling open flow (4.11 cfm vs. 2.32 cfm) while pulling a similar maximum vacuum (26.6 in-Hg). It's the better choice when a process needs more flow, such as larger vacuum infusion layups.\u003c\/p\u003e\n\n  \u003ch3\u003eCan the 2508-A be used for vacuum infusion?\u003c\/h3\u003e\n  \u003cp\u003eYes. Its combination of oil-free operation, strong vacuum depth (26.6 in-Hg), higher flow, and low-vibration piston design make it well suited to vacuum infusion processes in composites and fiberglass work, including larger layups.\u003c\/p\u003e\n\n  \u003ch3\u003eWhat voltage and frequency does the 2508-A require?\u003c\/h3\u003e\n  \u003cp\u003eThe 2508-A operates on standard 115 V, 60 Hz power and draws a nameplate full-load current of 2.9 A.\u003c\/p\u003e\n\n  \u003ch3\u003eWhat size are the intake and exhaust ports?\u003c\/h3\u003e\n  \u003cp\u003eBoth the intake (Port B) and exhaust (Port A) use 1\/4-18 NPT threaded ports.\u003c\/p\u003e\n\n  \u003ch3\u003eDoes the 2508-A have overheat protection?\u003c\/h3\u003e\n  \u003cp\u003eYes. It includes a built-in thermal protection switch that trips at 145 °C ± 5 °C to help prevent motor damage.\u003c\/p\u003e\n\n  \u003ch3\u003eWhat are the dimensions and mounting considerations?\u003c\/h3\u003e\n  \u003cp\u003eThe 2508-A measures 7.18 × 9.77 × 9.88 in (182 × 248 × 251 mm) and is designed with a compact, panel-mountable footprint for easy integration into benchtop or OEM setups.\u003c\/p\u003e\n\n  \u003ch3\u003eWhat is the recommended operating environment for the 2508-A?\u003c\/h3\u003e\n  \u003cp\u003eThe pump is rated for ambient operating temperatures between 10 °C and 40 °C.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Fibre Glast","offers":[{"title":"Default Title","offer_id":50533507989741,"sku":"2508-A","price":872.36,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0690\/7415\/7805\/files\/2508-A-Dual-Piston-Vacuum-Pump.png?v=1787662186","url":"https:\/\/www.fibreglast.com\/products\/vacuum-pumps-2508-a-twin-head-wob-l-piston-vacuum-pump","provider":"Fibre Glast","version":"1.0","type":"link"}