| Pipe Size | 1/2 in. |
| Connection Type | Sweat |
| Body Pattern | Two-way, Straight-through |
| Valve Type | Fan Coil Valve |
| Valve Action | Normally Closed |
| Actuation | Must be purchased separately |
| Capacity (Cv) | 3.5 Cv |
| Flow Characteristic | Quick Opening |
| Close-off Pressure | 20 psi |
| Ambient Temperature | 34 F to 125 F at 200 F Fluid |
| Controlled Fluid | Chilled or hot water with up to 60% Glycol |
| Materials (Body) | Brass |
| Materials (Stem) | Brass |
| Materials (Seat) | Brass |
| Materials (Packing) | EPDM rubber |
| Materials (Plug/Ball/Disc) | Buna-N rubber |
| Used With | VU443 Actuator, VU843 Actuator |
| Dimensions | A to B ports End to End--2 5/8 in.; Center Line of A&B ports to end of AB port--1 5/16 in. |
| CSA | CSA C/US |
| Maximum Safe Operating Pressure (psi) | 300 psig |
Description
The VU53S2034 is a fan coil valve from Resideo (Honeywell Home), 1/2 in sweat, 3.5 Cv, normally closed.
A fan coil valve is what gives one terminal unit its own control. The room thermostat opens the valve, water reaches the coil, the fan does the rest — and the rooms that are satisfied stop drawing water instead of being tempered by a central mixing decision made for the whole building.
Normally Closed. With no power at the actuator the valve sits shut. That is the right choice where an unpowered valve must not pass water — chilled water in a space where an open coil would sweat, or any system where flow costs money.
VU52 is normally open and VU53 is normally closed. The two look alike and carry the same Cv; swapping one for the other inverts what the zone does when the actuator loses power. Check which one came out.
The actuator is sold separately. This part number is the valve body alone. A body without an actuator does nothing, so order the pair unless you are reusing one that is already on the wall.
Flow capacity 3.5 Cv, quick opening characteristic, 20 psi close-off. Rated for chilled or hot water with up to 60% glycol.
- Brand: Resideo (Honeywell Home)
- Manufacturer Part #: VU53S2034/U
- Type: Fan coil valve
- Body pattern: Two-way, Straight-through
- Valve action: Normally Closed
- Pipe size: 1/2 in
- Connection: Sweat
- Flow capacity: 3.5 Cv
- Flow characteristic: Quick Opening
- Close-off pressure: 20 psi
- Controlled fluid: Chilled or hot water with up to 60% Glycol
- Body material: Brass
- Actuator: Sold separately
- UPC: 085267823975
- Category: Fan Coil Zone Valves