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Accessories & Replacement Parts

Overview

Two-way on-off low voltage valves consist of an actuator and valve assembly for controlling the flow of hot water.

Features

Manual opener (on all models, except straight-through, normally open valves) for valve operation on power failure; valve returns to automatic position when power is restored.
All models may be installed without disassembling the valve.
Compact construction for easy installation.
Complete powerhead may be removed or replaced without breaking plumbing line connections or draining the system.
Actuator motor may be replaced without removing the valve body or draining the system.

Product Specifications

Application: Hydronic Control
Dimensions (in.): 4 in. high x 3 23/32 in. wide x 2 3/8 in. deep
Dimensions (mm): 102 mm high x 94 mm wide x 60 mm deep
Comments: Use this valve in closed loop hydronic systems that do not contain dissolved oxygen in system water, such as fresh water from frequent source of makeup water. Valve designed for cycling (not constantly powered on) applications.
Frequency: 50 Hz; 60 Hz
Approvals, Underwriters Laboratories Inc.: UL Listed: File MH11826
Approvals, Canadian Standards Association: CSA Certified: File 1322
Operating Humidity Range (% RH): 5 to 95% relative humidity, non-condensing.
Voltage: 24 Vac; Power Consumption--7.7 VA
Ambient Temperature Range (C): 52 C Maximum
Ambient Temperature Range (F): 125 F Maximum
Connection Type: NPT
Electrical Connections (in.): 18 in. leads
Electrical Connections (mm): 457 mm leads
Timing: Nominal Open--15 sec
Body Pattern: Two-way, Straight-through
Pipe Size (inch): 3/4 in.
Pipe Size (DN): DN20
Current Draw: 0.32A
Fluid Temperature (C): 10 C to 93 C
Fluid Temperature (F): 50 F to 200 F
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 Kv
Valve Action: Spring return to close
Valve Type: Zone Valve
Materials (Body): Brass
Materials (Seat): Brass
Materials (Stem): Stainless Steel
End Switch Rating: 50 VA pilot duty @ 24 V; 4.4 A running with 26.4 A inrush @ 120 V
Actuation: Two position
De-energized Position: Normally Closed
Auxiliary End Switch: N.O. SPST
Static Pressure Rating (psi): 125 psi
Static Pressure Rating (kPa): 862 kPa
Materials (Plug/Ball/Disc): Buna-N (NBR) Rubber Ball
Materials (Packing): EPDM rubber
Manual Opener: Yes