The 34‑0217‑K flow switch is a replacement flow‑sensing safety device used in spa and hot tub plumbing systems. It detects water flow and ensures that critical components like the heater only energize when proper circulation is present, helping protect your equipment from dry‑fire conditions and overheating.

• 5" / 1.25" MPT Flow Switch – 34‑0217‑K
• Reliable Flow Detection — Accurately senses water movement in the spa’s circulation system, enabling the control system to permit heater operation only when sufficient flow exists.
• 1.25" Male Pipe Thread (MPT) — Standard plumbing thread size designed for direct installation into unions, tees, or heater fittings on 1.25" plumbing lines.
• Large Flow Capacity — Designed for higher‑flow systems with larger plumbing, suitable for 1.25" piping configurations.
• Robust Construction — Built to withstand continuous exposure to heat, moisture, and chemically treated spa water.
• Versatile Application — Used in a range of spa and hot tub models requiring a 1.25" MPT flow switch. Always verify thread size and flow requirements before ordering.
• Part No.: 34‑0217‑K

Why choose this product?
This flow switch is a key safety component that ensures your spa’s heater and other equipment operate only under safe flow conditions. Replacing a faulty switch restores proper flow monitoring, prevents equipment damage, and contributes to reliable, trouble‑free spa performance.