• Complete Full Unit Assembly: This listing is for the full thing, providing the complete assembly including the high-torque ZA5 actuator head (27650) and the heavy-duty brass 2 port valve body, ensuring you have every component required for a full replacement
• Flat Type Valve Design: Features an internal flat type valve rubber paddle mechanism; please be aware that this is not a ball type valve and the actuator is specifically designed for paddle-style stems—verify your system requirements to avoid incorrect purchases
• Standard UK 22mm Fitment: Equipped with a drayton 2 port valve 22mm compression fitting on both ends to ensure a professional, leak-reducing connection to standard UK copper piping, making it the essential 22mm motorised valve for S-Plan systems
• Ease of Maintenance: Designed with a snap-on replacement actuator head and a manual lever for easy system filling and venting, allowing for future electrical maintenance or head-swaps without the need to drain the primary plumbing circuit
• Precision Wiring & Operation: Operates on 230V AC voltage with a low power consumption of 5 Watts to 6 Watts, featuring a 1-metre 5-wire cable for industry-standard integration with your boiler and pump through a reliable spring return motor
• British Gas Choice: Trusted by professional heating engineers across the UK, this model is the preferred choice for British Gas installations, offering a proven pedigree of reliability and industrial-grade performance in millions of domestic systems

The LavaTap - Drayton 27100 is a professional-grade drayton 2 port motorised valve specifically engineered for the high-precision regulation of water circulation in British domestic heating circuits. As the preferred choice for British Gas, this model has earned its reputation through decades of reliable service in millions of UK households, making it the most trusted name for professional heating engineers and homeowners looking for a "fit and forget" solution.

IMPORTANT: THIS IS THE FULL UNIT. To ensure absolute clarity and prevent returns, please note that this listing includes the complete assembly: both the ZA5 actuator head and the 22 mm brass valve body. While many listings provide only the replacement head, this package provides the full thing required for a new S-Plan installation or a total valve failure replacement.

TECHNICAL COMPATIBILITY WARNING: This unit utilizes an internal flat type valve rubber paddle to stop water flow. It is NOT a ball type valve. Before purchasing, please verify your existing valve body type; this actuator head is specifically designed for paddle-style stems and will not function on ball-style mechanisms. Using the wrong head on a ball-valve body can lead to system failure and leaks.

The drayton 2 port valve 22mm compression ends are designed for a professional, leak-resistant connection to standard UK 22 mm copper or plastic plumbing pipes. The actuator features an integrated manual lever, which is critical for locking the valve in the "Open" position during the initial filling, venting, and commissioning of the central heating system. Its snap-on replacement design means the actuator head can be removed or replaced in seconds without touching the "wet-side" of the system, simplifying future maintenance.

Electrically, the unit is pre-wired with a 1-metre, 5-core cable following industry-standard wiring logic for seamless integration into your existing S-Plan controls. The high-torque motor operates on 230 V AC and provides power-efficient performance with a consumption of just 5 W to 6 W. Whether you are performing a full new-build installation or a critical emergency repair, the Drayton 27100 offers the industrial build quality and proven pedigree required for a warm, efficient, and well-regulated home.