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Dan’s Plumbing Est. 1977 · Westlake Village Call Dan (805) 330-3111 Request a visit

Oak Park · Pressure regulators

Water pressure regulators
in Oak Park

Water pressure regulators in Oak Park, ten minutes from the shop in Westlake Village. Conejo Valley water comes from tanks on the hills, so on many streets it arrives above the 80 psi code allows in a house.

Call (805) 330-3111 Request a visit

Dan picks up when he can and calls back the same day. You get the price before we start. Monday to Friday, 9am – 5pm.

Licensed CSLB #339618
Insured Bonded and insured
Since 1977 49 years, two generations
On Google 5.0 stars
From the shop Ten minutes
Permits Ventura County. Oak Park is unincorporated.
Guarantee One year on our labor. Thirty days on drain clearing.
ZIP codes 91377

Around here

In Oak Park

If you're replacing the same fixture twice in an Oak Park house, the pressure regulator is usually why. The lots sit high enough that street pressure runs well over what fixtures are rated for, and the regulator set when the house was built has never been touched. A new regulator, with an expansion tank at the water heater, ends the run of failures.

Neighborhoods: the Kanan tracts, Lindero Canyon, the streets off Oak Hills Drive, Sutton Valley, the newer tracts up Bowfield.

01

A weep under the sink or behind the toilet

Angle stops & supply lines

A fifteen-minute job. They usually weep before they let go, so change them when you see it.

02

Cold showers, or a puddle in the garage

Water heater replacement

Tank swap or tankless conversion, with the venting, gas sizing and county permit handled.

03

Buying the same fixture twice

Pressure regulators

Replacing the same fixture usually means the pressure's too high. We check it while we're there.

Call about any of these (805) 330-3111 Mon–Fri 9–5 Request a visit →

The job

How it goes

A regulator is a valve on the main line, usually near the front hose bib. It takes street pressure, 100 psi and more here, and holds the house at 50 to 70. When one fails after ten to fifteen years, pressure creeps up and fill valves, angle stops, cartridges and washer hoses start breaking.

A gauge on a hose bib tests it in a minute. Over 80, or a swing when a fixture shuts, means it's done. Replacement takes a few hours, with unions so the next swap is easier. If the water heater has no expansion tank, we add one.

We check the pressure at every house we work in. Here, it's the most useful thing to know.

Call if

What you notice,
and what it usually is

01

Fixtures keep failing, one after another

A failed regulator.

02

Banging pipes when a valve shuts

Water hammer. High pressure makes it worse.

03

The water heater relief valve drips

No expansion tank, a failed regulator, or both.

04

The shower blasts, then fades

A regulator on its way out.

05

Your house has never had one

A quick gauge test says if it needs one.

Four steps

How a job goes

  1. 01

    You call

    Dan picks up when he can and calls back the same day. Tell him what it's doing.

  2. 02

    We look

    We come out, find the cause and show you, with the old part in hand when there is one.

  3. 03

    You get a price

    Before anything starts. Repairs are time plus parts. Bigger jobs get a written bid.

  4. 04

    We do the work

    Small repairs usually get done the same visit. Bigger jobs get a start date we keep. Permitted where needed, and the house left clean.

Common questions

Pressure regulators in Oak Park: things people ask

How fast can you get to Oak Park?
Often the same day. It's ten minutes up Kanan or Lindero Canyon from Westlake Village.
Who issues permits in Oak Park?
Ventura County, since Oak Park has no city government. We plan around the county's inspection schedule, so the date we give you holds.
What should my water pressure be?
Between 50 and 70 psi. Code allows up to 80. Above that, most fixture warranties are void.
Where is my regulator?
Near the front hose bib or main shutoff. It's a bell-shaped brass valve with a screw on top.
Can I test the pressure myself?
Yes, with a hardware-store gauge on a hose bib. Over 80, or a big swing when a tap runs, means it's due.

Other questions (805) 330-3111 Mon–Fri 9–5 Request a visit →

Google reviews

What people say

5.0 ★★★★★ 8 reviews on Google

Dan standing in front of his white work truck, smiling.

★★★★★

“Outstanding work! Did a terrific job of diagnosing the issue over the phone prior to repair. Plumber was on time and on point. Work was done quickly and thoroughly. Figured out the most straightforward way to fix the problem and got it done. Small footprint, quick results, up and running in no time. Would absolutely recommend.”

David Loomstein · September 2026

★★★★★

“The absolute best plumber in Los Angeles!”

Neil D. · September 2026

Nearby

More in Oak Park

Pressure regulators nearby: Westlake Village · Thousand Oaks · Agoura Hills · Lake Sherwood

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Pressure regulators · Oak Park

Tell Dan what
it’s doing

Most problems get sorted out on a short call. Ten minutes from the shop. Monday to Friday, 9am – 5pm.

Dan picks up

(805) 330-3111 Send Dan the details

Find us

Dan's Plumbing

2352 Hillsbury Rd
Westlake Village, CA 91361

(805) 330-3111 · Monday to Friday, 9am – 5pm

Serving Westlake Village, Thousand Oaks, Agoura Hills, Oak Park and Lake Sherwood. Zip codes 91361, 91362, 91301, 91377.

Call Dan (805) 330-3111