SERIES-3000 VU52, VU53, VU54; VU442, VU443, VU444; VU842, VU843, VU844 FAN COIL VALVES AND ACTUATORS
3 95C-10885—01
Max. Fluid Temperature:
249°F (120 C)
Min. Fluid Temperature:
34°F(1°C) for all models.
Maximum soldering temperature:
500°F (260 C)
Consult factory before brazing
Max. Operating Pressure Rating:
Water: 300 psig (2000 kPa), PN20.
Steam: 15 psig (No superheat allowed; 2-way bodies only)
Accessories:
272708A 1/2 in. inverted flare to 1/2 in. sweat adapter
272708B 1/2 in. inverted flare to 3/4 in. sweat adapter
Close-off Pressure Ratings: See Table 3
a
Do not exceed Maximum Differential Pressure to ensure motor and spring open and close valve. Rating is pressure drop
across valve with valve closed, not head pressure of pump.
b
Do not exceed coil differential pressure to prevent water hammer and ensure motor and spring open and close valve.
Flow Characteristics:
Quick opening for on-off application. Flow is approxi-
mately 50% at 20% open.
Materials:
Valve body: forged brass.
Drive shaft stem: “Double D” 316 stainless steel.
Ball plug: EPDM rubber.
O-ring seals: EPDM rubber.
Service Medium:
Suitable for hot and chilled water with up to 50% glycol.
2-way valves suitable for low pressure steam, 15 psi,
249°F (120 C) maximum.
Approvals:
CSA C/US Certified, LR1322.
Table 3. Series-3000 VU fan-coil valve static close-off pressure ratings with water.
Valve
Model
Flow Capacity Close-Off Pressure Rating by Actuator, in psi (kPa)
a
Cv (kvs)
VU442/842A VU443/843A VU843B VU444/844A
N.O. N.C. N.C. H.C.O Mixing Diverting
b
VU52 1.0 (0.9) 60 (41)
2.4 (2.1) 60 (41)
3.5 (3.0) 40 (28)
5.0 (4.3) 28 (19)
8.0 (6.9) 20 (14)
VU53 1.0 (0.9) 50 (34) 60 (41)
2.3 (2.0) 30 (21) 60 (41)
3.5 (3.0) 20 (14) 40 (28)
5.0 (4.3) 14 (10) 28 (19)
8.0 (6.9) 10 (7) 20 (14)
VU53 1.5 (1.3) 28 (19) Not measurable:
Water pressure forces
plug into seat
b
3.0 (2.6) 28 (19)
4.0 (3.4)
20 (14)
7.0 (6.0)
12 (8)
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