Frequently Asked Questions

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If you have a technical or product related question of any type, then please email us on technical@apexvalves.co.nz and we will reply to your email personally and then add it to the Q & A section below to allow others to benefit from your question.


Q. Where is the best place to install the Filterstop?
A. Ideally, the valve should be fitted in a position so as to protect all downstream tapware and fittings, therefore where the main enters the building is the best place to install the valve. The valve may also be installed in any orientation although Apex recommends the filter bowl (cap) down so that any sediment is easily cleaned out.

Q. Can the Limiting Valve be installed in the ground?
A. No, the valve must be open to atmosphere, installing in the ground may result in reduced flow rates.

Q. Can the Relief Valve be installed on it’s side?
A. Yes, as long as the relief drain falls continuously to the outlet.

Q. Can valves cause water hammer?
A. No. Shut off devises such as single lever taps and solenoid valves are the cause. The water hammer is arrested at the non-return and the next upstream valve. A water hammer arrester at the source will prevent this.

Hose Nozzles:

Q. Can the hose nozzle be taken apart?
A. Yes. You need to take the cap off the diffuser. You will find a Philips head screw, and down the bore of the nozzle a nylon nut. Undo the nut and the screw and unwind the two body parts.

Q. How often do I need to clean the nozzles?
A. Depending on the usage, it may need to be cleaned every 6-12 months.

Q. What should I clean hose nozzles with?
A. Warm soapy water. Also check that the o-rings are not damaged and relubricate. We recommend Ricol Mx22 Silicone Grease.

Q. When I turn the hose nozzle off it leaks?
A. All sorts of small grit, sand or stones might have gone through the sysytem causing damage to the diffuser. It may need to be replaced ( repair kits are available).

Pipe Fittings:

Q. How tight do I need to do the nut up?
A. Do the pipe fittings nut up as much as you can by hand, then tighten 1-2 turns with a wrench.

Q. Do I need to cut the pipe square?
A. It does help. Also it pays to clean up any bures or rough edges and it helps if you chamfer the end of the pipe.

Q. Do I need to heat the pipe?
A. Depends on what type of pipe. There are some very hard pipes made, and heating will help soften and make assembly easier.

Q. What pressure will the fittings take ( maximum working pressure)?
A. The range of pipe fittings are rated to 16 Bar, 230psi @ 20º C.

Q. Can pipe fittings be used above ground?
A. Yes, or fittings are very strong and can handle extreme frost and extreme heat, and have a high UV resistance.

Q. Do you need to use thread tape on the male fittings?
A. Yes, we do recommend thread tape, or Locktite 5331 paste.

Q. Where are pipe fittings made?
A. All of the product range is Made in New Zealand. We strongly support Made in New Zealand.

If you have any further questions regarding products please do not hesitate to contact us.