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I have a non-return valve on the mains feed into a Zilmet expansion vessel. The valve includes a quarter turn shut off tap (to the left in the attached photo) and this tap leaks (sprays water up the wall) in any position between open and closed, and drips in the open position; thankfully it...

I've got a Honeywell V4073 mid position valve which is working fine, with one exception. If it's in the central position (CH & HW) and the HW reaches temperature, the actuator drives the valve to the CH only position but there's a loud bang from the valve as it reaches position - it sounds like...

Sorry if this is the wrong forum We're hoping to have a stove installed that has an option to connect an external, vented air supply direct to the back of the stove's airbox. The stove's over 5kW so needs a dedicated air supply to meet building regs, and using the piped supply will avoid...