Stainless Steel Manifolds

Stainless Steel Manifolds are sold in pairs, one supply and one return, mounted to metal bracket as shown.
Accessories such as Trunk Isolation Ball Valves, Vent/Purge Assemblies, and Actuators are purchased separately. For added convenience, several of these accessories can be purchased in kits.
Each circuit can be individually balanced by adjusting the valve located under the blue cap. Maximum flow rates are 12 gpm for 1&qout; manifolds and 20 gpm for 1-1/2" manifolds. Individual circuit flow meters are 0–2 gpm for 1" and 0–4 gpm for 1-1/2" manifolds. Circuits can be completely isolated by installing Circuit Isolation Ball Valves.
Manifolds and gauges are rated to 194°F at 87 psi pressure. Fittings are spaced at 2-1/8" on center. Order Onix, Crimp, or Compression fittings separately.

These manifold ball valves include temperature gauges to measure supply and return temperatures for troubleshooting or system balancing. They also provide transition from MBSP manifold threads to FNPT threads.

These manifold ball valves include temperature gauges to measure supply and return temperatures for troubleshooting or system balancing. They also provide transition from MBSP manifold threads to FNPT threads.

The Vent-and-Purge Assembly allows purging of the zone at the manifold location. The Vent-and-Purge Assembly consists of a 1" BSP sleeve nut for attaching to the end of the manifold, and a 3/8" manual air vent valve. Also includes a 1/2" hose fitting with a built-in ball valve to allow zone draining and filling. Nickel-plated brass.

These Manifold End Caps are used to cap off the end of a Stainless Steel Manifold when a vent-and-purge assembly is not used. Nickel-plated brass.

These Manifold Couplings are used to connect two manifold pairs. For example, an M-4 can be connected to an M-3 using the coupler to make an M-7. Nickel-plated brass for corrosion resistance. Sold individually.

BSP x Sweat Manifold Adapters connect Stainless Steel Manifolds to standard brass or copper pipe. This fitting features female BSP threads on the manifold side and a sweat fitting on the pipe side. Nickel-plated brass for corrosion resistance. These are not needed if you are using the Transitional Trunk Valves. Sold individually.

Use Manifold Elbows to connect directly to the manifold, then connect an ISO Ball Valve or other transitional to the male BSP side of the Elbow. Adapter or a Trunk Isolation Ball Valve is used to transition to NPT threads.

Circuit Isolation Caps are used to "seal off" unused circuits on the manifolds. They can be used to convert an M-8 manifold into an M-7 manifold. Nickel-plated brass for corrosion resistance. Sold individually

The Circuit Isolation Mini-ball Valve is used to either positively shut-off a circuit, or to adjust the flow of a circuit on 1" and 1-1/4" manifolds. Features a large handle for easy adjustment and control. Nickel-plated brass for corrosion resistance. May be used on Stainless Steel or Custom Tubular T20 Manifolds. Do not use with CazzBrass Manifolds. Sold individually.

This new Valve Actuator is an optional feature for mounting directly to the balancing manifold. The Valve Actuator provides on / off flow control to individual radiant circuits. This new style incorporates an indicator window that allows you to visually determine whether the valve is fully open or closed. Flow can be balanced prior to installing by turning the adjustment valve under the blue cap. Actuator is 24 VAC with four wires to connect to the thermostat and circulating pump.