The EPH Controls DT1P 2 Port Replacement Actuator is a direct replacement motorised valve head designed for compatible Drayton 2-port zone valves, including the widely-installed ZA5/679-2 valve body. Rather than replacing an entire valve assembly when only the motor has failed, the DT1P clips straight onto the existing serviceable valve body, restoring full function in minutes and keeping the original pipework and compression joints completely undisturbed.
Fitted with a detachable power cable and the familiar 5-wire connection used across the Drayton-compatible valve range, this actuator is a stocked essential for engineers carrying out zone valve fault-finding and repair on domestic S-Plan heating and hot water systems.
2-Port
Valve Type
230V
Actuator Supply
5-Wire
SPST Connection
Snap-Fit
Actuator Only
White/Black
Finish
UKCA/CE
Certified
Replacement Actuator Head
Replaces a faulty or worn motorised actuator without needing to remove or replace the valve body, saving time and avoiding an unnecessary system drain-down.
Compatible With Drayton ZA5/679-2
Designed to fit compatible Drayton 2-port zone valves, including the widely-fitted ZA5/679-2 valve body found in many UK S-Plan heating systems.
Detachable Power Cable
The detachable power cable makes wiring and future servicing straightforward, with 5 connecting wires matching the standard SPST wiring scheme.
Power-On Indicator Light
A built-in power-on light at the top of the actuator shows at a glance when the valve is energised and in use, helping speed up fault diagnosis.
Easy-Fit Snap Connection
The actuator head clips onto the valve body for a quick, tool-light fit, keeping downtime to a minimum during a callout.
UKCA & CE Certified
Manufactured to comply with UKCA and CE standards, giving installers confidence in electrical and mechanical safety compliance.
Please Note
This is a replacement actuator head only — it is designed to fit onto an existing, serviceable Drayton ZA5/679-2 (or other compatible) valve body. Always confirm the existing valve model, actuator connection type and wiring configuration before ordering, as actuator fitments vary between valve manufacturers and ranges.
Important Safety Information
This is a mains-voltage (230V) electrical component. All wiring and electrical connection work must be carried out by a competent person in accordance with BS 7671 (IET Wiring Regulations). Always isolate the electrical supply before removing or fitting the actuator.
Technical Specification
Identification
Manufacturer
EPH Controls
MPN
DT1P
Product Type
Replacement motorised valve actuator
Compatibility
Designed For
Compatible Drayton 2-port zone valves (ZA5/679-2 and similar)
Valve Type Supported
2-port zone valve, normally-closed
Electrical
Actuator Supply
230V AC
Wiring
5-wire, SPST end switch, detachable power cable
Indicator
Power-on LED
Physical & Certification
Finish
White and black
Maximum Operating Temperature
Up to 50°C
Certifications
UKCA, CE
Typical Applications
Fault repair on Drayton-compatible 2-port zone valves where the valve body is still serviceable but the actuator motor has failed. Planned maintenance and replacement of ageing actuators on S-Plan heating and hot water zoning systems. Stocked spare for heating engineers carrying out reactive callouts on existing Drayton zone valve installations.
Frequently Asked Questions
Does this replace the whole zone valve, or just the actuator?
It replaces only the actuator (motor head). The existing Drayton valve body stays in place and in the pipework, which means no draining down or re-plumbing is needed where the valve body is still serviceable.
Which valves is the DT1P compatible with?
The DT1P is designed for compatible Drayton 2-port valve applications, including the widely-used ZA5/679-2 valve. Always check the existing valve model and connection type before ordering, as actuator fitments differ between manufacturers.
Does it come with a power cable?
Yes, it's supplied with a detachable power cable and 5 connecting wires, matching the standard SPST wiring arrangement used on most UK 2-port zone valves.
How do I know if the actuator is powered and running?
A power-on light at the top of the actuator illuminates whenever the actuator is energised, giving a quick visual check during fault-finding.
Is any special tooling needed to fit the actuator?
No. The actuator uses an easy-fit snap connection onto the valve body, so it can typically be fitted and removed by hand once the electrical supply is isolated.
BTU & WATT Calculator
Room Dimensions
Room Type
Living Room
Bedroom
Kitchen
Bathroom
Conservatory
Hallway
Glazing Type
Single Glazed
Double Glazed
Triple Glazed
External Walls
0 Wall
1 Wall
2 Walls
3 Walls
4 Walls
Insulation Level
Poor
Average
Good (New Build)
Required Heating
0
Watts
0
BTUs
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