Genie Counterbalance Valve 139323GT – Load Holding Safety Valve for S-80 S-85 S-60 S-65 Z-135/70 Z-62/40 Z-80/60

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Counterbalance Valve 139323GT / 139323 – Optimized Product Page Content

Genie Counterbalance Valve 139323GT

🔹 Product Overview

The Counterbalance Valve with Genie part numbers 139323GT and 139323 is a high-capacity, safety-critical hydraulic component used extensively on the major lift and extension cylinders of various high-reach Genie Boom Lifts (S and Z Series).¹ This valve’s primary function is essential for safety: it locks the cylinder fluid (preventing cylinder creep or drift) and, when piloted open by the operator’s control, smoothly controls the speed of the lowering load driven by gravity. It ensures that the boom or platform descends only at a controlled rate and never runs away.²

This component is indispensable for the safe and predictable operation of the machine’s primary movements. The part number 139323GT is the necessary replacement for addressing dangerous issues such as uncontrolled boom descent, cylinder drift (creep), or jerky, unstable lowering movements under heavy load.

🔹 Key Features & Benefits

✅ Load Holding Safety: Locks the hydraulic actuator in position, preventing boom drift and unintended movement.

✅ Smooth Motion Control: Controls the speed of lowering/retracting loads driven by gravity, ensuring precise feathering and safety.

✅ Heavy-Duty Fitment: Used across a wide range of popular Genie high-reach Articulating (Z) and Telescopic (S) boom lifts.3

✅ Direct OEM Cross-Reference: High-quality aftermarket equivalent for Genie part numbers 139323GT and 139323.

🔹 Technical Details

Detail	Specification
Part Number	139323GT (Also known as 139323)
Condition	100% new aftermarket replacement
Type	Hydraulic Counterbalance Valve (Pilot-Operated Cartridge Style)
Function	Locks fluid flow until piloted open; controls speed of overhauling loads.
Intended Use	Critical load-holding and smooth speed control for lift and boom cylinders.
Application Location	Screws directly into the cylinder port or a dedicated manifold block.
Warranty	12 months against manufacturing defects

🔹 Compatible Genie Models & Applications

The Counterbalance Valve 139323GT is a critical safety component compatible with the following Genie Boom Lifts:

Genie Equipment Series	Specific Compatible Models (Examples)
Telescopic Boom Lifts	S-80, S-85, S-60, S-65
Articulating Boom Lifts	Z-135/70, Z-62/40, Z-80/60
Common Application	Essential for the controlled and safe lowering/retraction of major boom sections and cylinders supporting the platform and load.

🔹 Why Choose RQ Parts?

Safety Assurance: Guarantees the necessary load-holding and smooth descent control are fully restored, ensuring operator safety.

Prevent Drift: Eliminates boom cylinder drift and ensures movement only occurs when intentionally piloted.

High Quality: Manufactured to ensure reliable sealing and precise speed modulation under the high loads of boom lift operations.

Competitive Pricing: Cost-effective solution for replacing complex, safety-critical hydraulic control components.

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Delivery Times

Average Delivery Time is 10-15 days within worldwide.
For overseas delivery Message Us or Call Toll Free at +8618221399269

General Returns: All returns must be requested within 30 days of invoice.
Please note that this refund policy applies to parts purchases only. There are no refunds available for equipment purchases.

General Returns: All return requests must be made within 30 days of the invoice date. Returned merchandise will ONLY be accepted with an issued Return Authorization number and must be returned within 30 days of issuing that Return Authorization number. Special-Order products, electronics, paints, chemicals, lubricants, LPG tanks, and fire extinguishers are non-returnable once ordered. Returned items must be sent to Shanghai RQMACHINE Equipment with freight prepaid.

All returns, except those involving a Shanghai RQMACHINE Equipment order or product error, will be subject to a 25% restocking charge per line item.

Merchandise returned as defective will be thoroughly tested and inspected. For items verified as defective, Shanghai RQMACHINE Equipment will, at its sole discretion, either repair or replace the merchandise at no charge, or issue a full credit for the defective merchandise, including freight. Merchandise returned as defective but found to be working properly will be subject to a testing fee and the 25% restocking charge per line item.

Credit will not be issued for merchandise damaged due to corrosive materials, abuse, alteration, or misuse.

Before returning any merchandise to Shanghai RQMACHINE Equipment, a Return Authorization Number must be obtained from our sales/customer service department.

Your request must include:

Part Number & Description
Return Reason
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Phone: +8618221399269