X-Block Hydraulic Adapter

In stock
SKU: PF-XBlock
Regular price $ 130.00
Regular price Sale $ 165.00 Sale price $ 130.00

We offer the following methods of delivery:

  • Same day Freight Shipping when ordered Mon-Fri before 12pm central time. (excluding holidays)
  • Pickup from our Mandeville, Louisiana warehouse
  • In some cases, free shipping - please contact us: sales@primarymover.com or call 985-888-6554

X-Block Hydraulic Adapter

Convert a Single-Acting Power Unit into a Dual-Acting Hydraulic System

The Primary Mover X-Block Hydraulic Adapter is a compact, patent-pending hydraulic valve designed to allow a single-acting hydraulic power unit to operate a double-acting hydraulic cylinder or jack.

Originally designed for dump trailers and hydraulic jack systems, the X-Block creates a simple and cost-effective way to add dual-direction hydraulic control without replacing your existing power unit.

The X-Block features a 4-port design labeled: P, T, A, and B. By changing the handle position, hydraulic flow direction is reversed, allowing the cylinder to extend or retract using the same single-acting power source.


How It Works

When the handle is turned one direction:

  • P → A
  • B → T

When the handle is turned the opposite direction:

  • P → B
  • A → T

This flow-switching design is what gives the X-Block its name and allows a single-acting hydraulic pump to control both extension and retraction of a double-acting cylinder.


Important Installation Notes

  • If you are using this with a dump bed and hydraulic jacks on the same power unit, you will need a manual selector ball valve to switch between hydraulic functions.
  • If you are using the X-Block only for hydraulic jacks or another dedicated hydraulic function, a selector valve may not be required.
  • Your hydraulic system must allow for a proper return path to tank.

Key Features

  • Patent-Pending X-Block Design
  • Converts Single-Acting Systems to Dual-Acting Operation
  • Compact 4-Port Hydraulic Design
  • Rated for Hydraulic Systems up to 3200 PSI
  • Ideal for Dump Trailers, Truck Beds, and Hydraulic Jacks
  • Simple Mechanical Operation with No Electronics Required

Frequently Asked Questions

Will this work with my single-acting hydraulic power unit?

Yes. The X-Block was specifically designed to allow a single-acting hydraulic power unit to operate a double-acting hydraulic cylinder or jack.

Do I need a selector valve?

If you are running both your dump bed and hydraulic jacks from the same power unit, then yes — you will need a manual selector valve to switch between circuits.

If your power unit is dedicated only to the jack circuit, the X-Block can often be used without a selector valve.

What do the P, T, A, and B ports mean?

P = Pressure
T = Tank / Return
A & B = Work ports to the hydraulic cylinder

The handle changes flow direction internally so the cylinder can extend and retract using the same hydraulic source.

Do I need counterbalance or holding valves on my jack?

It is strongly recommended.

While some customers have used the X-Block without holding valves, doing so requires a strong understanding of hydraulics and system control.

For safer and more controlled operation, we recommend using hydraulic jacks equipped with counterbalance or load-holding valves.


Benefits of Choosing Primary Mover

  • Designed around real dump trailer applications
  • Built for high-pressure hydraulic systems
  • Simple, reliable mechanical operation
  • Compact design for easy installation
  • Expert hydraulic support from the Primary Mover team