Dramm® OneTouch™ High-Flow Valve - 16 GPM

High-Flow Thumb Control for Large Greenhouse Watering Demands

The Dramm OneTouch High-Flow Valve delivers twice the flow of the standard 8 GPM One Touch valve, at 16 GPM, for faster fill times, long hose runs, or high-volume output across large plant collections. The same smooth thumb-tip slide gives one-handed control from fully off to fully open, and the zinc die-cast body with nylon valve components provides commercial-grade durability for daily professional use.

The enlarged ball opening is the key upgrade over the standard One Touch: more internal flow at the same precise, variable control, adjustable anywhere between off and full flow for anything from gentle misting to maximum-volume output.

Key Features & Benefits

• 16 GPM at 40 PSI: High-flow output supports long hose runs, large plant collections, and high-volume fill applications.
• Enlarged ball opening: Larger internal opening than the standard One Touch for reduced restriction and greater volume at any pressure.
• Thumb-tip slide control: Smooth variable adjustment from off to full open with one hand, no grip release required.
• Zinc die-cast body: Metal construction for long-term durability under daily commercial use.
• Nylon valve components: Chemically resistant for greenhouse and hydroponic environments.

Who Should Use This

Large greenhouse operations, commercial nurseries, and hydroponic growers who regularly move high water volumes and need fast, precise hose control throughout long daily watering cycles are the direct fit for this valve.

About Dramm

Dramm Corporation has built professional watering control hardware at its Manitowoc, Wisconsin facility since the early 1940s, and the OneTouch High-Flow Valve extends the same thumb-tip slide design used across the standard One Touch line to higher-volume greenhouse applications.

Frequently Asked Questions

When should I choose the High-Flow over the standard One Touch?

Choose the High-Flow when you need more than 8 GPM, for long hose runs, large plant collections, or any application where faster watering throughput saves meaningful time. The standard One Touch is rated at 8 GPM and suits typical single-hose tasks.

Is the control mechanism the same as the standard One Touch?

Yes, the same thumb-tip slide design is used, providing the same precision variable control. Only the internal opening size differs between the two valves.

Does the larger opening affect shutoff reliability?

No, the enlarged ball opening maintains the same reliable full shutoff as the standard model when the slide is fully closed. There is no tradeoff in sealing performance for the added flow.

Can this handle pressure above 40 PSI?

The 16 GPM rating is stated at 40 PSI. Confirm the valve's maximum pressure rating in the Dramm specification sheet before use at higher supply pressures.