Unitary Valve

VCZA; VCZB

Two-way Cartridge Cage Valves are intended for hydronic applications in a normal indoor environment to control the flow of hot water or chilled water glycol solution to 60% concentration. These valves are designed for zone control of heating/cooling systems, or to control individual fan coil, baseboard radiator or convector applications. Depending on the model selected they can be controlled by SPST or SPDT two

position controller, tristate (floating), or modulating proportional controller. For trouble-free operation of the product, good installation practice must include initial system flushing, chemical water treatment, and the use of a 50 micron (or finer) system side stream filter(s). Remove all filters before flushing.

SPECIFICATIONS

 

Valve Type

Cartridge Cage Valve

Body Pattern

Two-way, Straight-through

Connection Type

Sweat or , Female NPT

Controlled Medium

Hot/Chilled Water with up to

 

60% Glycol

Flow characteristic

Quick open, linear, or equal

 

percentage

Maximum Safe Operating Pressure

300 psi (2068 kPa (20 Bar))

Close-off pressure

60 psid (414 kPa [4.1 bar])

Fluid Temperature Range

34 F to 203 F (1 C to 95 C)

Ambient Temperature Range

32 F to 150 F (0 C to 65 C)

Stem Travel

0.4 in. (10 mm)

Materials

 

(Body)

Bronze

(Stem)

Stainless Steel

(Seat)

EPDM O-ring seals on Noryl

 

piston

(Cartridge)

Ryton™, Noryl™ engineering

 

plastic

(Packing)

EPDM rubber

APPROVALS

 

Canadian Standards Association

CSA Certified

ACCESSORIES

40007029-002—Wrench for cartridge (included with sweat valves and all replacement cartridges)

FEATURES

Quick open, linear, and equal percentage flow characteristics available.

Bi-directional installation.

3000-series valves for floating and modulating non-fail safe applications

1000-series valves for two-position control

High close-off rating independent of Cv.

Available with a variety of North American and international pipe fittings.

No tools required for actuator installation or removal.

Actuator removal does not require draining system.

Service is by replacement of cartridge, not valve body.

Cartridge replacement rebuilds valve to factory-new condition.

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Honeywell MS4103 manual Vcza Vczb, Stem Travel