GVO Holding Valve Lock Valve for SY65-9 SY75C-9 EC75 EC88 Excavators

GVO Holding Valve Lock Valve for SY65-9 SY75C-9 EC75 EC88 Excavators

 Key attributes

Prevents "Boom Droop" & Ensures Safety
When the joystick is in neutral, the hold valve immediately cuts off the return oil path from the cylinder.

Even if the main control valve has minor internal leakage, the boom will not slowly lower due to its own weight.

In the event of a hydraulic hose burst, the valve instantly locks the cylinder, preventing the boom or load from falling and avoiding serious accidents.

 Ensures Precise Operations
During fine lifting or when the boom needs to be held at a specific height for extended periods, the hold valve firmly "locks" the position.

Prevents "soft-leg" conditions caused by internal leakage, ensuring operational accuracy and safety.

If you need other relief valves, send us the related details please:

1.The pictures

2.The p/n

3.The size

GVO Value

  What makes GVO different from other parts suppliers is the complete package we bring to every order. We stock parts for all major brands – Komatsu, CAT, Kobelco, Hitachi, Volvoo, Hyundai, Doosan, Sany, XCMG, and more – across every critical category: engine, hydraulic, electrical, sealing, bearing, and gear. Our 40,000‑cubic‑metre warehouse ensures that what you need is almost always on our shelves, and our same‑day shipping policy means you don’t lose a single day waiting. We match each part with precision, cross‑checking your machine model and OEM number, so you never receive a wrong fit. We price fairly and honestly, and we stay available long after your order arrives – for technical advice, follow‑up questions, or future requirements. We don’t believe in cutting corners or making excuses. We believe in reliable inventory, fast logistics, and real people who actually care about keeping your equipment running. That’s the GVO advantage – a single source that delivers quality, speed, and peace of mind with every shipment.

Who We Serve

• Wholesalers and distributors

• Construction contractors

• Equipment owners and operators

• Service and repair shops