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24V 3/4 in Sweat N.C. Zone Valve


24V 3/4 in Sweat N.C. Zone Valve

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  • Product Info
  • Literature
  • Accessories & Replacement Parts


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


  • 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

Hydronic Control
Dimensions (in.)
4 in. high x 3 1/2 in. wide x 2 3/8 in. deep
Dimensions (mm)
102 mm high x 89 mm wide x 60 mm deep
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.
50 Hz; 60 Hz
Approvals, Underwriters Laboratories Inc.
UL Listed: File MH11826
Operating Humidity Range (% RH)
5 to 95% relative humidity, non-condensing.
24 Vac; Power Consumption--7.7 VA
Nominal Open--15 sec
Ambient Temperature Range (F)
125 F Maximum
Ambient Temperature Range (C)
52 C Maximum
Connection Type
Body Pattern
Two-way, Straight-through
Pipe Size (inch)
3/4 in.
Pipe Size (DN)
Current Draw
Fluid Temperature (C)
10 C to 93 C
Fluid Temperature (F)
50 F to 200 F
Maximum Differential Pressure Ratings (Close-off) (psi)
8 psi
Maximum Differential Pressure Ratings (Close-off) (kPa)
55 kPa
Electrical Connections (in.)
36 in. leads
Electrical Connections (mm)
914 mm leads
Capacity (Cv)
8 Cv
Capacity (Kv)
6.9 Kv
Valve Action
Spring return to close
Valve Type
Zone Valve
Materials (Body)
Materials (Seat)
Materials (Stem)
Stainless Steel
Two position
De-energized Position
Normally Closed
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

Marketing Collateral

Sales/Promotional Materials-5000 Series Zone Valve

Sales/Promotional Materials-V8043 5000 Series Zone Valves (French)

Sales/Promotional Materials-Count on One Brand For a Full Line of Hydronic Heating and Potable Water Solutions

Sales/Promotional Materials-V8043 1000 Series Zone Valve

Product Selections/Comparisons-New V8043 5000 Series Zone Valve Advantage

Sales/Promotional Materials-Sales Ad for V8043, V8044 Zone Valves with Removable Powerhead (English)

Wiring-Motorized Valve

Dimension-Motorized Valve

Wiring-Oil & Hydronic Training

Wiring-Oil & Hydronic Training

Wiring-Oil & Hydronic Training

Wiring-Oil & Hydronic Training

Wiring-Oil & Hydronic Training

Dimension-V8043 5000 Series QuickFit Zone Valves

Wiring-Existing White Rodgers System

Wiring-Wiring V8043E to White Rodgers system

Wiring-Wiring V8043F to White Rodgers system

Wiring-Wiring V8043F to White Rodgers system

Wiring-V8043 operation for normally closed valve

Wiring-Typical wiring for V8043F

Wiring-Typical wiring for V8043E and V8044E

Wiring-Typical 3-Zone system

Wiring-Existing Taco System

Wiring-Wiring Honeywell V8043F to Taco system

Wiring-Wiring V4043E to Dole system and Flair System

Wiring-Wiring V8043F to Dole System and Flair System

Wiring-Existing Dole system

Wiring-Existing Flair System

Wiring-Typical 4-zone system

Dimension-Two-Way On-Off Low Voltage Valve

Dimension-5000 Series QuickFit Zone Valve

Technical Documents

Installation Materials-Installation Instructions for V4043, V4044 Valves; V8043, V8044 Zone Valves (English, French)

Product Data and Specifications-Product Data for V4043, V4044, V8043, V8044 Motorized Valves (English)

Maintenance/Product Reference Materials-White Paper for V8043 To Install a 5000 Series Actuator on a 1000 Series Valve Body (English)

Product Data and Specifications-Submittal Sheet for V8043 5000 Series Zone Valves (English)

Installation Materials-Zone Valve Sticky-Back Labels

Product Data and Specifications-Removable Head Zone Valves

Replacement Parts


24V Replacement motor for V8043/44


24V, 50/60 Hz Replacement motor for steam and heating Zone Valves