1772708 2398976 Secondary Relief Valve for E330CL 345B 345BL 345C Excavators

Key attributes

Precise Pressure Control & System Protection

The core function of the relief valve is to quickly open and release excess pressure when the hydraulic system pressure exceeds the set value. This effectively prevents serious failures such as hose bursts, pump damage, and valve body destruction caused by overloading, protecting the machine's core hydraulic components.

Optimized for Kobelco Equipment

This part is specifically designed for Kobelco SK135SR and SK140-8 models, ensuring perfect compatibility with the original hydraulic system and guaranteeing reliability and stability after installation.

Built for Demanding Conditions

As a critical component of an excavator's hydraulic system, this valve is manufactured to high standards. It is designed to withstand the high pressures, high-frequency vibration, and harsh environments typical of construction machinery operations, offering excellent durability and a long service life.

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Our Services – Transparent Partnership, Every Step

We Put Everything on the Table

We believe the best relationships are built on transparency. That means no hidden costs, no unclear timelines, and no surprises.

What Transparency Looks Like With Us:

• Clear pricing – Every cost is explained upfront. No hidden fees, no add-ons.

• Realistic timelines – If we can't ship same day, we tell you why and give you a realistic alternative.

• Open communication – We share both good news and challenges. You'll always know where your order stands.

• Honest advice – If we think another option is better for you, we'll say so — even if it means less margin for us.

What You Get

Trust. Confidence. A partnership that feels honest because it is honest.

GVO — Transparent partnership. Every step.