1-1/4" TwistFlow Manifold w/ Temp Gauge (13 Loops)

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Series 668S1 TwistFlow pre-assembled distribution manifold for radiant panel systems with built-in sight flow gauge/balancing valve

Distribution manifolds for radiant panel systems are used to optimally distribute the heating fluid in floor heating system circuits and ultimately improve the control of heat emission from the panels. The manifolds ensure that the flow to each circuit is regulated precisely and also control the shut-off, venting and automatic removal of air from the system.

• 1-1/4" NPT inlet ball valves
• Maximum working pressure: 150 psi (10.3 bar)
• Maximum temperature: 180°F (82°C)
• Maximum peak temperature: 200°F (93°C)
• Loop Cv: 1.23 (combined supply & return ports)
• Outlet center distance: 2 inches

This manifold requires (26) Loop Fitting Assemblies:

PEX Loop Fitting Assemblies Options

• 680507: 5/16" PEX Loop Fitting Assembly
  This fitting will connect 5/16" PEX to a loop of the Manifold without requiring the use of a PEX Tool.
• 680503A: 3/8" PEX Loop Fitting Assembly
  This fitting will connect 3/8" PEX to a loop of the Manifold without requiring the use of a PEX Tool.
• 680504A: 1/2" PEX Loop Fitting Assembly
  This fitting will connect 1/2" PEX to a loop of the Manifold without requiring the use of a PEX Tool.
• 680555A: 5/8" PEX Loop Fitting Assembly
  This fitting will connect 5/8" PEX to a loop of the Manifold without requiring the use of a PEX Tool.
• 680505A: 3/4" PEX Loop Fitting Assembly
  This fitting will connect 3/4" PEX to a loop of the Manifold without requiring the use of a PEX Tool.

PEX-AL-PEX Loop Fitting Assemblies Options

• 682530A: 3/8" PEX-AL-PEX Loop Fitting Assembly
  This fitting will connect 3/8" PEX-AL-PEX to a loop of the Manifold without requiring the use of a PEX Tool.
• 682540A: 1/2" PEX-AL-PEX Loop Fitting Assembly
  This fitting will connect 1/2" PEX-AL-PEX to a loop of the Manifold without requiring the use of a PEX Tool.
• 682545A: 5/8" PEX-AL-PEX Loop Fitting Assembly
  This fitting will connect 5/8" PEX-AL-PEX to a loop of the Manifold without requiring the use of a PEX Tool.
• 682550A: 3/4" PEX-AL-PEX Loop Fitting Assembly
  This fitting will connect 3/4" PEX-AL-PEX to a loop of the Manifold without requiring the use of a PEX Tool.
  

Optional Installation Accessories:

Loop End Cap

• 386500: Manifold Loop End Cap
  These allow you to cap off a loop of the manifold if it will not be used.

Actuators
If you want to use your manifold to heat multiple zones, you can purchase return side actuators that work along side thermostats. The actuators act as zone valves to allow you to use one manifold to control the temperature in different rooms independently.

• 656314: Thermal Actuator with Auxiliary Microswitch (24v)
  
• 656414: Thermal Actuator with Auxiliary Microswitch, Low Power Consumption (24v)
• 656304: Thermal Actuator (24v)
• 656404: Thermal Actuator, Low Power Consumption (24v)