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Overview

Two-way, high pressure,Fan Coil zone valves (VU52 and VU523), are used to control flow of hot/chilled water in commercial HVAC equipment such as fan coil units, terminal reheat coils and convectors. IMPORTANT: Not for use in systems containing dissolved oxygen

Features

  • Compact construction for easy installation.
  • Fits under the cover of most baseboard convectors with actuator fitted to valve body.
  • VU52 and VU53 provide 2-way, straight-through control of water.
  • Available in normally closed (VU53) or normally open (VU52) configurations.
  • 300 psi (2,000 kPa, PN20) operating pressure rating.
  • Patented ball seal provides long service life, soft close off.
  • Triple O-ring seal provides three lines of defense against corrosion and water leakage around drive shaft.
  • Quick opening flow curve.
  • Available with NPT end connections for iron or steel piping.

Product Specifications

Dimensions (in.)
A to B ports End to End--2 3/4 in.; Center Line of A&B ports to end of AB port--1 3/8 in.
Dimensions (mm)
A to B ports End to End--70 mm; Center Line of A&B ports to end of AB port--35 mm
Maximum Safe Operating Pressure (psi)
300 psig
Maximum Safe Operating Pressure (kPa)
2068 kPa
Used With
VU444 Actuator, VU844 Actuator
Approvals, Canadian Standards Association
CSA C/US
Ambient Temperature Range (C)
1 to 52 C @ 94 C Fluid
Ambient Temperature Range (F)
34 F to 125 F at 200 F Fluid
Connection Type
Sweat
Body Pattern
Two-way, Straight-through
Pipe Size (inch)
3/4 in.
Pipe Size (DN)
DN20
Maximum Differential Pressure Ratings (Close-off) (psi)
20 psi
Maximum Differential Pressure Ratings (Close-off) (kPa)
138 kPa
Capacity (Cv)
3.5 Cv
Capacity (Kv)
3.0 kvs
Valve Action
Normally Open
Valve Type
Fan Coil Valve
Controlled Fluid
Chilled or hot water with up to 60% Glycol
Materials (Body)
Brass
Materials (Seat)
Brass
Materials (Stem)
Brass
Flow Characteristic
Quick Opening
Actuation
Must be purchased separately
Materials (Plug/Ball/Disc)
Buna-N rubber
Materials (Packing)
EPDM rubber
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