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Honeywell D15S-150A pressure reducing valve DN150 PN16

Honeywell

Honeywell D15S-150A pressure reducing valve DN150 PN16

Genuine Honeywell (Resideo) D15S-150A diaphragm-actuated pressure reducing valve, DN150 PN16 flanged, for protecting water installations against excess supply pressure.

At a glance

  • Also known as 4201399
Manufacturer part no.
D15S-150A
Showing prices

£7,077.23

£5,897.69 ex. VAT · VAT at 20%

Available to order · 7 working days
Available to order · 7 working days
Not certain it's the right part? The technical team verifies fitment before dispatch — no charge, and it stops a second trip.Call the technical teamSend a technical question

Same-day dispatch

Ordered by 4pm Mon–Fri, 10:30am Sat.

30-day returns

Unused, in original packaging.

What it is

The D15S-150A is a diaphragm-actuated pressure reducing valve from Honeywell (Resideo), used to protect drinking water installations against excessive supply pressure, holding a constant outlet pressure despite inlet fluctuations.

Signs this part needs replacing

  • Fluctuating or excessive downstream water pressure
  • Valve leaking, sticking or failing to regulate pressure
  • Corrosion or scale visible on the valve body
  • Loss of pressure gauge readings or inconsistent outlet pressure

Before you order

  • Match the DN150 flanged connection and PN16 rating on your existing valve
  • Isolate and drain the water supply before removing the old valve
  • Check the valve's outlet pressure setting suits your system

Not sure which part?

Search by part number, product name or brand — our technical team confirms fitment before anything is dispatched.