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Honeywell Home Pressure Reducing Valve 15mm x 15mm (7978J)

£ 34.65INC VAT

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Honeywell Home Pressure Reducing Valve 15mm x 15mm (7978J)

Lightweight, simple construction. Designed to protect household appliances from excessive supply pressures regardless of fluctuating inlet pressure. Can reduce water consumption and damage from over pressurisation. 1.5-6bar adjustable outlet pressure. Supplied with pressure gauge.

  • Brass
  • Lightweight

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View all: Honeywell Home Pressure Reducing Valves

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Honeywell Home Pressure Reducing Valve 15mm x 15mm is rated 4.1 out of 5 by 44.
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Rated 4 out of 5 by from Neat valve I needed to replace the reducing valve and the plumber had only brought a 22mm. I checked Screwfix and this was the only one in stock at the time which was suitable. Unfortunately it was the most expensive; I would have chosen the cheaper one, let’s hope more outlay means better quality. All the parts were there and it was easily installed. Good product.
Date published: 2020-12-30
Rated 1 out of 5 by from Awful - Pressure creeps up Disappointed with this - it is not drop tight. Holds the set pressure when water is flowing, then when the demand for water turns off, the pressure creeps up to the same as that on the incoming side. Not fit for purpose
Date published: 2020-12-13
Rated 3 out of 5 by from Works very well BUT..... Very pleased with this cure for hammering pipes which were getting very annoying. There is a problem however- the pressure guage plastic thread (not brass as it appears to be in product photo) forms a poor seal which weeps, even with PTFE tape. Local Screwfix have been very helpful, the manufacturer's diagram appears to show a sealing ring but none supplied with any of the valves we looked at so it's a bit of a mystery. In the end the combination of an added neoprene ring and a dab of LS-X seems to have sorted it but I expect better from a Honeywell premium product.
Date published: 2020-11-30
Rated 3 out of 5 by from Honeywell goes cheap-o Had this valve professionally installed on my incoming mains ~4 years ago. Noticed that water flow was getting seemingly worse past year, gauge was showing dynamic pressure dropping too much (first sign of valve not responding properly). On removal & disassembly, looks like internal o-ring was letting some water through as valve operated. Due to poor design, this water allowed to accumulate inside spring housing, rusting the spring completely and covering entire actuator in rust deposits. Also, the valve is 22mm, but its not a good flow and not sufficient even for 1-bed house (unless maybe dropping from ~6-7bars of incoming mains). The actual aperture is very small. Verdict - don't get this (low-end) model. Look instead for competitor valves with larger bodies (or even slightly more expensive 22m Honeywell valve).
Date published: 2020-11-21
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Should the pressure drop while a tap is running?

My incoming pressure is 5.75 barg, the valve was set at 3 bar when a tap is run the pressure drops to 2.5 bar is this normal or should the pressure always stay at what its set at, in this case 3 bar?
Asked by: suunt0

Bought today and its got resideo braukmann on it and not honeywell

Is this item correct and for the UK market as there is no mention of honeywell on the box, or the valve or the literature. I asked the screwfix guy and he said they were all the same on the shelf
Asked by: suunt0

How do I seal the gauge?

Gauge has no rubber seals, and plastic thread - do I just screw it in as supplied? - asking before to avoid leaks!
Asked by: Mrmac82

Fitting valve

I have a second stopcock tap that isn't really required,would this valve fit in its place? Would it be about the same size?
Asked by: Anonymous

Installation location

Can this PRV be fitted on the pipe just before the shower (so as to effect the shower only), or should it only be installed where the mains enters the house (affecting all outlets in the house).
Asked by: ChrisFromFleet
The pressure reducing valve is designed to protect household appliances against excessive supply pressures. It can be used on any outlet where you want to reduce the pressure.
Answered by: Honeywell Home Consumer Support
Date published: 2020-10-31
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Specification
A Size 15 mm
Brand Honeywell Home
B Size 15 mm
CE Standard (Tested to EN...) EN 1567.
Construction Material (Plumbing) Brass
Manufacturer Guarantee 1 Year Guarantee
Operating Water Pressure 1.5-6 bar
Pack Size 1
Pieces in Pack/Case 1
Product Diameter 15 mm
Product Type Pressure Reducing Valve
Temperature Range 0-70 °C

Product contents

15mm valve, nut and olive compression fittings and pressure gauge.

Downloads

Instruction Manual