The Caleffi Z200043 is a Z-one 2-way zone valve body with Inverted Flare connections, 3.5 Cv and 30 psi maximum close-off differential pressure. Supplied as a valve body only; a Z1 series actuator is ordered separately.
Best for shut-off duty on baseboard and fan coil circuits service where the body must seat bubble-tight against up to 30 psi differential.
Warranty
Key Features
100 %% Bubble-Tight Close-Off
The peroxide-cured EPDM paddle and seals give 100 percent bubble-tight seat close-off leakage at up to 30 psi differential.
3.5 Cv Flow Capacity
Sized at 3.5 Cv, one of five flow capacities in the Z-one range, so the body can be matched to the circuit rather than the pipe size.
Rated to 300 psi and 240 deg F
Forged brass body rated to 300 psi static and 32 to 240 deg F, plus 15 psi low pressure steam.
Push Button Actuator Mount
A Z1 series actuator locks on with a push button and no fasteners, and lifts off for service without breaking the pipe joint.
Technical Specifications
| Product Type | Motorized Zone Valve Body |
| Series | Z-one |
| Configuration | 2-Way straight through |
| Connection type | Inverted Flare |
| Flow coefficient | 3.5 Cv |
| Max. close-off differential pressure | 30 psi |
| Max. static pressure | 300 psi (15 psi steam) |
| Medium temperature range | 32 - 240 deg F |
| Medium | Water, glycol solutions, low pressure steam |
| Max. percentage of glycol | 50 % |
| Close-off seat leakage | 100 % bubble-tight |
| Body material | Forged brass |
| Stem / seals | Stainless steel stem; peroxide-cured EPDM o-rings and paddle |
| Supplied as | Valve body only - actuator ordered separately |
Specifications transcribed from Caleffi technical brochure 01115/23.1 NA and installation manual NA10073. Last verified August 2026.
Documentation
Related Products
- Caleffi Z200041 : Z-one 2-Way Zone Valve Body, Inverted Flare, 1.0 Cv, 75 psi Close-Off (Valve Only)
- Caleffi Z200042 : Z-one 2-Way Zone Valve Body, Inverted Flare, 2.5 Cv, 50 psi Close-Off (Valve Only)
- Caleffi Z111000 : Z-one Zone Valve Actuator, Normally Closed Spring Return, 24V AC, On/Off, SPST Auxiliary Microswitch, 18 in wire leads
- Caleffi Z151000 : Z-one Zone Valve Actuator, Normally Closed Spring Return, 24V AC, On/Off, SPST Auxiliary Microswitch, Screw terminal block
Frequently Asked Questions
What is the Caleffi Z200043?
It is a Z-one 2-way motorized zone valve body with Inverted Flare connections and a 3.5 Cv flow coefficient. It is the valve body only and takes a Caleffi Z1 series actuator.
What differential pressure will the Caleffi Z200043 close against?
Up to 30 psi. Close-off differential falls as flow capacity rises across the Z-one range, from 75 psi at 1.0 Cv to 20 psi at 7.5 Cv.
Does the Caleffi Z200043 include an actuator?
No. It is supplied as a valve body only. Pair it with a Z1 series actuator such as the Z111000 or Z151000, or order a pre-matched Z-series quick order code.
- Product Type:
- Motorized Zone Valve Body
- Product Family:
- Z-one Zone Valves
- Series:
- Z2 2-Way Valve Body
- Configuration:
- 2-Way
- Connection Type:
- Inverted Flare
- Flow Coefficient:
- 3.5 Cv
- Max Close-Off Pressure:
- 30 psi
- Body Material:
- Forged Brass
- Max Operating Pressure:
- 300 psi
- Medium Temperature Range:
- 32 - 240 deg F
