Senninger Pressure Regulator - 20 PSI Preset - 0.1-8 GPM - 3/4in NPT F×F - Max 100 PSI

Low-Hysteresis Pressure Regulation for Precise Low-Flow Irrigation

The Senninger Pressure Regulator is engineered for installations requiring precise low-flow pressure control with minimal hysteresis — delivering stable 20 PSI output across a 0.1-8 GPM flow range from inlet pressures up to 100 PSI. Low friction loss through the large internal flow path keeps system efficiency high, while the resistance to plugging from that same large path reduces maintenance frequency in field, greenhouse, and subsurface irrigation installations. 3/4in NPT female connections on both inlet and outlet allow flexible installation above or below ground without additional adapters.

Key Features & Benefits

• 20 PSI preset outlet pressure — delivers consistent low-pressure output ideal for low-flow drip emitters, pressure-compensating stakes, and micro-irrigation systems.
• 0.1-8 GPM flow range — covers low-flow applications from single-emitter points up to moderate multi-emitter zones.
• Low hysteresis — minimal pressure variation between pressure increase and decrease cycles for highly consistent outlet pressure throughout the irrigation event.
• Low friction loss — large internal flow path minimizes pressure drop through the regulator body, preserving available system pressure.
• Plugging resistance — the enlarged flow path resists clogging from particulate common in field and reclaimed water irrigation applications.
• Above or below ground installation — suitable for both above-ground manifolds and buried in-ground irrigation systems without modification.
• Max 100 PSI inlet — handles the full range of residential, commercial, and municipal supply pressures without damage.

Who Should Use This

Drip irrigators, commercial greenhouse growers, and field irrigation professionals who need precise, low-hysteresis pressure regulation at 20 PSI for low-flow emitter systems with high inlet pressure variability.

Compatibility

3/4in NPT female inlet and female outlet. Preset: 20 PSI. Flow range: 0.1-8 GPM. Maximum inlet pressure: 100 PSI. Suitable for above or below ground installation.

Frequently Asked Questions

What does "low hysteresis" mean in practical terms?

Hysteresis is the difference between the pressure at which the regulator opens versus closes. Low hysteresis means the outlet pressure remains nearly constant regardless of whether flow is increasing or decreasing during the irrigation cycle.

Can this regulator be buried underground?

Yes — it is specified for both above and below ground installation. Ensure proper bedding and backfill around the regulator for subsurface installations.

Is this regulator adjustable?

This model is preset at 20 PSI and is not field-adjustable. For adjustable pressure, a different Senninger regulator model is required.

Will the large flow path affect regulation accuracy?

No — the large flow path is designed to reduce friction loss and plugging risk without compromising the precision of outlet pressure regulation within the rated flow range.