Teehandle Drain Valve - .25"

Couplings Company Inc

Teehandle Drain Valve - .25"

SKU#: R53004

Compact 0.25–18 NPT tee‑handle drain valve in brass for air tanks and apparatus plumbing. Quick manual draining helps prevent moisture, corrosion, and freeze issues.

Price:$28.95

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Features

  • T‑handle operation: Manual tee‑handle for quick open/close control in the field.
  • Thread size: 0.25–18 (industry‑standard 0.25‑18 NPT thread form uses 18 threads per inch).
  • Male pipe thread (MPT): 0.25 in MPT connection for common air/brake and utility drain points.
  • Brass construction: Durable brass body commonly specified for T‑handle drain cocks of this cross‑reference (18KC).
  • Lightweight: Approx. 68 g for easy panel or tank‑port mounting.


What is it?

The 18KC is a compact, manually operated tee‑handle drain valve used to drain moisture or bleed air from tanks and lines. Couplings Company lists it as an air brake drain cock with a 0.25–18 thread and 68 g weight


How is it used?

  • Install the valve into a 0.25‑18 tapered pipe thread port (NPT form, 18 TPI). Open/close by turning the tee‑handle to vent condensate or air from the system.
  • Typical use cases include draining air reservoirs / compressor tanks and utility drain points on mobile equipment and shop air systems; comparable T‑handle drain cocks are widely used for low‑pressure air, water, and fluids


Maintenance information

  • Routine draining: Open the valve on a schedule suitable for your operating environment to remove condensate and prevent corrosion or freeze damage.
  • Thread sealant: When installing in NPT ports, apply appropriate pipe thread sealant/tape to achieve a leak‑tight seal
  • Inspection: Periodically check for wear, debris, or leakage and verify smooth tee‑handle movement.


What is it used with?

  • Compressed air tanks / air brake reservoirs and low‑pressure fluid lines that require manual draining; 18KC cross‑reference listings and comparable products show common use in these systems.
  • Fire apparatus drain circuits (for draining discharge/suction lines) often use similar T‑handle or quarter‑turn drain valves.





  • Model: 18KC – 0.25 Tee‑Handle Drain Valve (Couplings Company)
  • Thread size/form: 0.25–18 (NPT thread form uses 18 TPI for 0.25 in nominal pipe size)
  • Connection: 0.25 in male pipe thread (MPT)
  • Body material: Brass (per 18KC cross‑reference)
  • Handle: Tee‑handle manual operation (T‑handle)
  • Weight: 68 g
  • Model: 18KC