K7 Series Unloaders

 

The unloader valve diverts water flow into bypass when the trigger gun valve is closed.

Flow actuated unloaders divert water to the bypass when there is a sufficient reduction or stoppage of water flow. The flow actuated unloader has an orifice instead of a check valve in pressure actuate unloaders. When the gun valve is closed and water flow stops, system pressure is increased rapidly at all points past the orifice.

A small channel in front of the orifice allows the increased pressure to travel up to the piston assembly, pushing it down. The rest of the water flow is diverted through the bypass and back to the float tank or pump inlet.

 

FEATURES:

• Features all stainless and brass internal parts
• Design reduces sensitivity to entrapped air
• No external moving parts or springs
• Eliminates high pressure in all lines while unit is in bypass mode
• Bypass restrictor eliminates pressure peaks during bypass
• Unique balanced piston design permits precise pressure adjustments
• Simple design for easy maintenance and service

 

SPECIFICATIONS:

• K7.3 Maximum Volume: 6.6 to 10.8 GPM
• K7.2 Maximum Volume: 4.2 to 6.6 GPM
• K7.1 Maximum Volume: 2.9 to 4.2 GPM
• Discharge Pressure: 0 to 3000 PSI
• Maximum Temperature: 165 F
• Inlet Port: 3/8" FPT
• Outlet Port:3/8" MPT
• Bypass Port: 3/8 FPT
• Dimensions: 7.50" x 3.75" x 3.50"
• Weight: 4.5 lb.

 

About Expert Power Wash

Expert Power Wash is built and operated by Tim and Kristina — a team passionate about giving
pressure washing professionals the best equipment available. Every skid is hand-built in Oregon City, OR, with a focus on quality, reliability, and ease of use in the field.

Our goal is to source 95% of the parts we use from the USA. We distribute across 24 states, Canada, and overseas — backing every unit with a lifetime warranty and personal customer support. We don't just sell equipment; we help you build a successful business with hands-on training and ongoing guidance

Shipping & Pickup

We recommend in-person pickup in Oregon City, OR — this includes a free 2-hour
hands-on training session so you leave confident operating your skid. Transport
shipping is also available and coordinated directly with you.