Intatec & Zilmet – Heat Pump Ancillary Products Intatec are a leading UK manufacturer with heat pump components designed with the installer in mind. The Inta’s range of heat pump installation products will out-perform others on the market. All their innovative products ensure the heat pump system operates at maximum efficiency, with minimal heat loss and utmost reliability. Such products include – 28mm Zero Anti-Freeze Valves, 28mm Fill & Flush Valve, Lever Ball Valves, Heating Expansion Vessels, Sealed System Installation Kits, Insulated Buffer Tanks and 28mm Magnetic & Particle Filter designed just for heat pumps.