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Home / Mining Equipment / Factory Direct KZD High-Quality Brass Hydraulic Quick Coupling, Oil Pipe, Nozzle, Water Pipe, High-Pressure and High-Temperature Resistant
Mining Equipment

Attributes

Brand -
Category Machinery & Equipment / Mining Equipment
Origin -
Material High-Grade Brass
Connection Type Hydraulic Quick Coupling
Pressure Rating Up to 350 Bar
Temperature Range -20°C to +120°C
Thread Standard BSP / NPT Available
Seal Material Viton O-Rings
Application Oil, Water, and Hydraulic Fluids
Surface Finish Nickel Plated
Origin Factory Direct (KZD)
Certification ISO 9001 Certified

6 reviews

A

Anonymous

Mar 27, 2026

Rating: 5/5

Excellent build quality for heavy machinery

We installed these couplings on our excavators last month. The brass construction feels solid, and we haven't experienced any leaks even under high pressure. Great value for factory direct pricing.

A

Anonymous

Mar 23, 2026

Rating: 4/5

Reliable but shipping took a while

The product itself is fantastic and fits our hydraulic systems perfectly. The only reason for 4 stars is the shipping time was slightly longer than expected, but the quality makes up for it.

A

Anonymous

Mar 21, 2026

Rating: 4/5

Good durability so far

Been using these for three weeks in a dusty mining environment. They are holding up well against corrosion and physical impact. Will order more soon.

A

Anonymous

Mar 16, 2026

Rating: 5/5

Easy installation and secure lock

The quick connect mechanism works smoothly. It clicks into place securely and disconnects easily when needed. No tools required for standard maintenance swaps.

A

Anonymous

Mar 05, 2026

Rating: 5/5

Perfect for high-temperature environments

Our mining operations run hot, and these couplings handle the temperature spikes without degrading. The Viton seals are a nice touch. Highly recommended for industrial use.

A

Anonymous

Mar 01, 2026

Rating: 5/5

Best price-to-performance ratio

Compared to branded alternatives, these KZD couplings offer the same performance at a fraction of the cost. Zero leakage issues on our water pipe systems.

5 FAQ

Q: Are these couplings compatible with synthetic hydraulic oils?

A: Yes, the Viton seals and brass body are fully compatible with most synthetic and mineral-based hydraulic oils.

Q: Do you offer bulk discounts for orders over 500 units?

A: Yes, we provide tiered pricing for bulk orders. Please contact our sales team directly for a custom quote.

Q: Can I mix these with other brand quick couplers?

A: These follow ISO 7241-1 Series A standards, so they are interchangeable with most major brands using the same series profile.

Q: What is the maximum working pressure for the 1/2 inch model?

A: The 1/2 inch model is rated for a maximum working pressure of 350 Bar (approx. 5000 PSI).

Q: Is the nickel plating thick enough to prevent corrosion in salty environments?

A: The nickel plating provides excellent corrosion resistance, but for continuous submersion in saltwater, we recommend our stainless steel series instead.

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