Single or Double Check Valve, Pipe and Adaptor kit for our range of Australian Made Hydraulic Cylinders. Available to fit on Cylinders with bores from 1.5 to 5" and Strokes from a minimum of 10" inches to a Maximum of 48" inches.

If You are Purchasing one or More of Our Australian Made Hydraulic Cylinders with a bore between 1.5 and 5" inches and a stroke from 10 to 48" inches and you feel that the added safety that a Single or Double Check Valve will provide is a great investment.

If you are looking for more safety and better movement control of your cylinders try our
Hydraulic Cylinder Counterbalance Valve, Pipe and Adaptor Kit

1. Cylinder Bore Size: Select from the drop down menu if your cylinder has a 1.5" or is a 2" "short" Cylinder, or if it has a bore diameter between 2" and 5" inches. The Default selection is (2" - 5" (Standard) length Cylinders)

2. Load Holding On (which cylinder port): Select from the Drop down Menu, whether you want Load Holding on the Cylinder's, Retract Port, Extend Port or on the Retract and Extend Ports. (Please see Image below).

3. Valve Mounting Position: Select from the Drop Down Menu whether you want the Counterbalance Valve Mounted on the Cylinder' A port or B port. (Please see Image below).

4. Cylinder Stroke: Select from the Drop Down Menu the Stroke of your Cylinder in inches.(Please note minimum Cylinder Stroke is 10" and a Maximum Stroke is 48" inches)

Plumbing kit (hardline pipes and adaptors and a single or double acting counterbalance to fit our Australian Made AG cylinders.
Please note this is ONLY for our Australia Made Cylinders.

Please Note:

This Kit Does Not Include the Hydraulic Cylinder.

Check Valve are much simpler than Counterbalance valves.

The valve is set to open only when sufficient pilot pressure is applied to overcome this back pressure, ensuring the load doesn't free-fall due to gravity. This provides precise control over the lowering speed. Examples include excavator booms, forklift masts, and press rams.

Preventing Cavitation: When an overrunning load pulls the cylinder out faster than the pump can supply oil, a vacuum (cavitation) can occur in the cylinder's retracting port. Counterbalance valves, by maintaining back pressure, ensure there's always sufficient oil on the non-load-bearing side of the piston, preventing cavitation and the associated noise, damage, and erratic movement.

System Stability: In applications with large, moving masses, counterbalance valves can contribute to system stability by preventing sudden, uncontrolled movements.

Why Install on Extend and/or Retract Ports?

The decision to install these valves on the extend, retract, or both ports depends entirely on the application and the potential hazards or control requirements:

Check or Load Hold Valves:

MM / 15/9/2025 All New $ Pic Abc Seo links