Disassemble an angle valve

Angle valves often calcify. You can partially disassemble angle valves and then descale and clean them. How to proceed when disassembling the angle valve can be read below.

Tasks from the angle valve

The angle valve represents the connection between a water supply line and the fitting to be connected. The angle valve has two important tasks:

  • regulate, open and close the water without constantly having to close the main water tap
  • unified connection of fittings (in principle, each angle valve has the same dimensions)

Disassemble the angle valve

If you want to disassemble the angle valve, you must first remove it. Turn off the main water tap and make sure that there is really no water left.

Then unscrew the connection line or the pressure hose of the valve, which is connected to the angle valve. Now use a water pump pliers and a cloth to grip around the square shaped body of the valve and turn it up. With three to four turns, the angle valve should be unscrewed.

Remove cap and remove fuses

Now the cap is pulled off (twist grip). In some corner valves, the square can be loosened and unscrewed with a union nut or circlip. There may also be appropriate fuses on the fittings for the fitting as well as on the supply line. After these are removed, the valve can be removed.

Not always worth the dismantling of the angle valve

Keep in mind, however, that you can not disassemble every angle valve. Especially with low-cost products, the valve can also be pressed. The replacement of the valve with the rotary spindle and the grease housing (for easy operability) is worthwhile in the rarest cases anyway, since the cost of a new angle valve with prices between 10 and 30 euros are usually cheaper anyway.

Do not disassemble the angle valve, but decalcify it in a vinegar bath

Should you nevertheless try to repair the old corner valve and make it workable again, we recommend that you remove it in one piece and then insert it into a decalcifying bath for at least 24 hours. You may be able to clean the valve inside with a small wire brush and loosen solid limescale.

Corner valve open correctly

For most angle valves, any help is usually too late, because the valve is permanently opened "wrong". In most households, the angle valve is completely open until it stops. Should it now be turned off, it is often so jammed by dirt particles and calcifications that it can no longer be solved.

You can prevent that. Install the new angle valve. Turn it all the way up and then turn it back a bit (a quarter turn). Later you can move the slider back and forth. This is often crucial that you can still solve calcifications and dirt again.

Tips & Tricks

When loosening limescale and dirt particles like sand get into the mixing valve. How to repair a single-lever mixer or faucet, you can read here in detail.

Video Board: Learn To Brew: Dismantling a Ball Valve for Cleaning or Repair