TruFLOW Replacement Manifold Valve

Uponor (Wirsbo) A2620017 TruFLOW Replacement Manifold Valve A genuine Uponor TruFLOW on/off valve body replacement used on compatible TruFLOW radiant manifolds to restore zone flow control when the correct service valve is required. Key Features * TruFLOW on/off valve body, replacement part * Part number: A2620017 * SupplyHouse note: Not compatible with older "WIRSBO" branded manifolds * Warranty listed: 10-year Compatibility & Applications * Intended for Uponor TruFLOW model manifolds (radiant distribution manifolds that use TruFLOW on/off valve bodies). * Must only be used where the manufacturer specifies this exact part number: A2620017 (including the specific manifold generation/type noted by the manufacturer). Installation & Operation Notes * Installation should be performed by a qualified radiant/hydronic heating technician. * Reference the manifold's service/installation documentation (and the valve/manifold installation instructions provided for this part) for the correct shutoff, disassembly, reassembly, and leak-check procedure. * User feedback notes practical handling points: remove the surrounding ring first for wrench access, and because it seals with an O-ring, tighten snug rather than overtightening. Maintenance & Troubleshooting * This valve is frequently replaced to address sticky/sticking manifold valves, zones not heating, or flow issues that persist after temporary measures (such as lubrication). * Reviews also mention deteriorated O-rings as a driver for replacement. * If issues continue after replacement, follow the manifold/system troubleshooting steps to confirm actuator operation, correct valve selection, and that the manifold type is compatible. User Reviews & Q&A Summary * Review themes commonly describe it as a direct-fit replacement that resolves sticky valve problems and restores heat to affected radiant zones. * Several reviewers reference compatibility with TruFLOW thermal actuators and successful use in Wirsbo/Uponor distribution manifolds when the manifold is the correct TruFLOW type. * Common cautions include fit verification (some users ordered the wrong valve for their manifold) and shipping/packaging concerns (reports of damaged threads on arrival). * Q&A themes focus on compatibility: SupplyHouse staff state it is only for TruFLOW manifolds, will not fit older Wirsbo manifolds, and will not fit a referenced Weil-McLain manifold part number; they also note A2450028 is obsolete without a replacement.