

Ships same day if ordered by 12 pm
Manufacturer pricing rules prevent us from advertising our discount — no account or email required to see it.
Secure Payments
Easy Returns
Expert Advice
Fast Shipping
The HEATLINK 78303 TwistSeal Mini (40mm) 3-port Z.V.Supply & Flow Meter Return Module Pair is designed for hydronic manifold systems. The supply module offers on/off manual control, enabling isolation of individual loops for maintenance or system adjustments. The return module facilitates visual balancing of the flow rate using an integrated flow meter, ensuring optimal system performance. Constructed from durable Polysulfone and Nylon, this module pair features 1-inch MIP end connections and operates effectively within a maximum temperature range of 180°F.
Manual control for loop isolation and visual flow balancing for hydronic manifold systems.
Thanks for subscribing!
This email has been registered!