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Pressure Regulators

Inline regulators holding a set outlet pressure on drip and micro zones — factory-preset models and adjustable units that mount straight onto a control valve.

17 products · 6 manufacturers · wholesale · ships nationwide

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Netafim

Pressure Regulators

Pressure regulator
Flow
0.25–175 gpm across the range
Pressure
Preset outlet 9, 12, 15, 20, 25, 30, 35, 43, 50, 57 or 65 psi; max operating 145 psi
Connection
Threaded; non-corrosive plastic and brass, stainless steel spring, EPDM rubber diaphragm
Sizes
3/4" low flow · 1½" female x male threaded · 2" male threaded (x4 and x6) · 3" female threaded (x10)
Best for
Instant response to pressure variation — outlet pressure stays constant whatever the inlet does. A built-in operating indicator shows at a glance when the regulator has reached its proper outlet pressure, so you can walk a house and see which zones are right without a gauge. The one-piece sealed regulating unit is different for each pressure and is field replaceable, so a pressure change or a worn unit does not mean a new regulator. Withstands the fertilizers and chemicals in common use
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3/4" Low Flow Pressure Regulator

Pressure regulator
Pressure
Preset outlet 15, 20, 25, 35 or 42 psi; max operating 145 psi
Connection
Female x female threaded; silicon diaphragm
Sizes
3/4" — inline female x female threaded
Best for
An improved in-line unit sealed to regulate accurately down at low flows, where a standard regulator drifts. Silicon diaphragm prevents leakage. The sealed unit is non-replaceable and there is no operating indicator — the trade for accuracy at low flow
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Hunter

Accu-Sync

Pressure regulator
Pressure
Regulates 20–100 psi (1.4–7.0 bar)
Sizes
AS-ADJ adjustable 20–100 psi; AS-30, AS-40, AS-50, AS-70 fixed
Best for
Screws onto any Hunter control valve to hold the zone at its optimal pressure — saves water and extends the life of everything downstream. The adjustable model sets anywhere from 20 to 100 psi; the fixed models take the guesswork out. Glass-filled nylon construction. Works with both AC and DC latching solenoids
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Senninger MPR (Mini Pressure Regulator)

Pressure regulator
Flow
0.5–3.5 gpm (114–804 l/hr) by model
Pressure
Preset outlet 15, 20, 30 or 40 psi; max inlet 45–80 psi rising with the preset
Sizes
1/2" male NPT inlet x 1/2" female NPT outlet
Best for
The smallest regulator in the line, for single heads and short runs. A greater hydraulic area than most flow-control devices lets it regulate over a wider flow range than its size suggests. Cuts wind drift and overwatering across changing elevations and long laterals, and steadies flow so every sprinkler throws its designed pattern. Models MPR152M2F through MPR402M2F. As with every Senninger regulator, inlet pressure must sit at least 5 psi above the preset outlet
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Senninger PRLG (Landscape Grade)

Pressure regulator
Flow
0.5–7 gpm (114–1590 l/hr)
Pressure
Preset outlet 10, 15, 20, 25, 30, 35 or 40 psi; max inlet 90–120 psi rising with the preset
Sizes
3/4" female NPT inlet x 3/4" male NPT outlet (3/4" hose x hose also available)
Best for
Landscape-grade low-flow regulator, models PRLG103F3M through PRLG403F3M. Male outlet thread makes it easy to screw straight onto a valve or riser
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Senninger PRL (Low Flow)

Pressure regulator
Flow
0.5–8 gpm (114–1817 l/hr); 0.5–5 gpm on the 6 psi model
Pressure
Preset outlet 6, 10, 12, 15, 20, 25, 30, 35 or 40 psi; max inlet 80–120 psi rising with the preset
Sizes
3/4" female NPT inlet x 3/4" female NPT outlet (3/4" hose also available)
Best for
The workhorse for solid-set, drip and other low-volume systems, and the widest preset choice at this flow — nine settings from 6 psi up. Models PRL063F3F through PRL403F3F
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Senninger PSR2 (Pivot Special Regulator)

Pressure regulator
Flow
0.5–15 gpm (114–3407 l/hr)
Pressure
Preset outlet 6, 10, 12, 15, 20, 25, 30, 35, 40 or 50 psi; max inlet 80–130 psi rising with the preset
Sizes
3/4" female NPT inlet x 3/4" female NPT outlet
Best for
Patented design built for systems running surface water, where grit destroys ordinary regulators. Covers a much wider flow band than the PRL at the same 3/4" size. Models PSR2063F3F through PSR2503F3F
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Senninger Filter Regulator

Pressure regulator
Flow
0.5–15 gpm (114–3407 l/hr)
Pressure
Preset outlet 6–20 psi (0.41–1.38 bar)
Best for
Filtration and pressure regulation in one body, so a zone needs one fitting instead of two. Combines PSR2 performance with reduced nozzle clogging — worth it where the water carries debris and the heads are small enough to block
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Senninger PMR-MF (Pressure-Master Medium Flow)

Pressure regulator
Flow
2–20 gpm (454–4542 l/hr); 4–16 gpm on the 6 and 10 psi models
Pressure
Preset outlet 6, 10, 12, 15, 20, 25, 30, 35, 40, 50 or 60 psi; max inlet 80–140 psi rising with the preset
Sizes
3/4" female NPT inlet x 3/4" female NPT outlet with vane
Best for
Mid-range flows for solid-set, drip and low to medium volume systems — eleven presets, the widest choice in the line, and it reaches 60 psi. Models PMR06MF3F3FV through PMR60MF3F3FV
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Senninger PR-HF (High Flow)

Pressure regulator
Flow
10–32 gpm (2271–7268 l/hr)
Pressure
Preset outlet 10, 15, 20, 25, 30, 40 or 50 psi; max inlet 90–130 psi rising with the preset
Sizes
1 1/4" female NPT inlet x 1" female NPT outlet
Best for
Higher flows in solid-set, drip and low-volume systems. Can be installed above or below ground. Models PR10HF5F4FV through PR50HF5F4FV
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Senninger PRU (Pressure Regulator Ultra)

Pressure regulator
Flow
20–100 gpm (4542–22713 l/hr)
Pressure
Preset outlet 10, 15, 20, 25, 30, 40, 50 or 60 psi; max inlet 90–140 psi rising with the preset
Sizes
2" female NPT inlet x 2" female NPT outlet
Best for
The largest inline regulator Senninger makes — 100 gpm through a 2" body, for a whole block or a submain rather than a single zone. Models PRU108F8F through PRU608F8F
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Senninger PRLV (Pressure Regulating Limit Valve)

Pressure regulator
Flow
Up to 18 gpm (up to 4088 l/hr)
Pressure
Preset outlet 10, 15, 20, 30, 40, 50 or 60 psi; max inlet 125 psi on every model
Sizes
3/4" female NPT inlet x 3/4" female NPT outlet with vane
Best for
Regulates and limits — it holds the preset outlet pressure and caps flow, so a burst lateral or an open end does not drain the block. Flat 125 psi max inlet across all seven presets. Models PRLV10MF3F3FV through PRLV60MF3F3FV
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Senninger PRXF-LV (Extended Flow Limit Valve)

Pressure regulator
Flow
Up to 75 gpm (up to 17034 l/hr)
Pressure
Preset outlet 20, 30, 40 or 50 psi; max inlet 125 psi
Sizes
3" female slip inlet x 3" female slip outlet
Best for
The PRLV idea at submain scale — regulation plus flow limiting up to 75 gpm through a 3" slip body that solvent-welds straight into PVC. As a limit valve it caps downstream pressure at no more than 15 psi above the regulated setting under static (no-flow) conditions, so the line does not creep up to full inlet pressure when the zone shuts. Models PRXF20LV3FS3FS through PRXF50LV3FS3FS
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Rain Bird

PRS Pressure Regulating Stems

Pressure regulator
Pressure
Regulates to 30 psi
Sizes
Available in every pop-up height
Best for
The regulator lives inside the spray body stem rather than upstream, so every head is individually regulated to 30 psi — no misting from over-pressure at the near end of a zone
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Superior

PRS-MOD Pressure Regulating Module

Pressure regulator
Flow
Recommended by valve size: 5–20 gpm on 3/4", 5–40 on 1", 15–70 on 1¼", 20–100 on 1½", 40–200 on 2", 100–360 on 2½" and 3"
Pressure
Regulates 10–100 psi to within ±3 psi, inlet to 200 psi, to 150°F
Sizes
PRS-MOD — fits the SPV, 950 and 800 valve families
Best for
Converts an SPV or 950 into a pressure-regulating valve after the fact, which is the cheap way to fix a block that turned out to be over-pressured without replacing the valve. The adjustment dial is graduated in 5 psi steps so the setting can be read off rather than guessed, and the housing is sealed against fogging and binding. Holding downstream pressure steady also takes the water hammer out of a system with pump cycling
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Irritrol

OmniReg

Pressure regulator
Flow
1–300 gpm — needs only 1 gpm to operate, so it still regulates on a small zone
Pressure
Adjustable: 5–30 psi (OMR-30) or 5–100 psi (OMR-100)
Sizes
OMR-30 modular regulator 5–30 psi; OMR-100 modular regulator 5–100 psi; OMR-DS downstream sensing kit
Best for
Bolts onto the 100 Series Century PLUS, 700 Series UltraFlow, 200B and 311A valves and holds constant downstream pressure however much the inlet varies — which is what protects emitters and micro-sprinklers on a site with pump cycling or long mainline runs. The OMR-DS kit senses further downstream when the regulating point is not at the valve
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Antelco

Pressure Regulating Devices

Pressure regulator
Best for
Antelco’s pressure regulating devices for holding micro zones at a set pressure
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