SPX Hankison 504 Auto Drain 1/2-in NPT

SKU: 504
Part #: 504
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SPX Hankison Model 504 Pneumatic Air Compressor Auto drain- 6001788

Hankison’s level actuated, pneumatically operated condensate drains automatically discharge water, oil, and oil/water emulsions. from separators, receiver tanks, dryers, filters, after-coolers and drip legs. Each drain is engineered to reduce system downtime by eliminating the need to manually drain compressed air lines and equipment.

Unlike simple float operated drains, these drains feature an air powered piston for positive opening and closing of the discharge port. This operation prevents clogging of the compressed air system while the baffle protects the operating mechanism from contaminants. The magnetic action lengthens time between cycles and prevents any external vibration from causing unnecessary discharge. The Snap-Trap series automatic condensate drains are designed for versatile installation, reliable performance and economical operation with features available to protect your compressed air system.

The OEM SPX Hankison part number for this automatic compressor drain is 6001788 however it is also shown as 504.


  • Durable, self bailing solid surface float won’t lose buoyancy
  • Resilient pilot valve seat
  • Discharge port protected by screen
  • Soft-seated discharge port won’t leak
  • Viton float mechanism is impervious to synthetic lubricants


Maximum working pressuresConnection
to 175 psig (12.3 bar) 1/2" NPT