ISO 7241-A · Classic

ISO A Series
Classic Connection

The optimal choice for agricultural machinery and general hydraulic systems. The industry de‑facto standard.

up to 350 bar 1/4" – 2" BSP/NPT NBR seals
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ISO 16028 · Flat Face

Flat Face Series
Zero Leakage

Flat face design completely eliminates oil spills. Perfect for excavators, hydraulic breakers, and forestry machinery.

up to 700 bar 0.01 ml spill Ni-Zn coating
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HOLMBURY · Screw-lock

HOLMBURY Series
Screw Connection

Screw-to-connect couplings with butterfly handle for tool-free connection under pressure. Power hydraulics.

up to 350 bar 3/4" and 1" BSP NBR seals
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Why Choose HYDROTECH?

700 Bar Reliability

Withstand extreme loads without leaks thanks to precision steel hardening and laser valve inspection.

Connect Velocity

Connect and disconnect lines with one hand in 2 seconds. Full system integrity at the moment of switching.

Industry 4.0 Standards

Fully compliant with ISO 16028 and ISO 7241. Interchangeability with Parker, Stucchi, and Faster at the product DNA level.

Certified Products

ISO 16028

ISO 7241-A

DSTU EN ISO

QC Control

Popular QRC Models

ISO A Series

ISO A Series (Classic)

Optimal for agricultural machinery and general hydraulic systems.

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Flat Face Series

Flat Face Series

Flat-faced valves. Ideal for excavators and hydraulic breakers: no dirt in the system.

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Screw-to-connect QRC

Screw-to-connect QRC

For ultra-high pressure and pulsating loads. Vibration resistant.

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HOLMBURY Screw-lock QRC

HOLMBURY (3/4" ÷ 1") — Screw-lock

Screw-to-connect couplings with butterfly handle for tool-free connection. Power hydraulics.

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Holmbury HDB Decompression Block

Holmbury HDB — Decompression Block

Hydraulic multi-coupler for skid steers. Connect all lines simultaneously.

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Expert Answers

What is the maximum working pressure?

Standard ISO A series couplings are rated for pressures up to 350 bar. Our reinforced Flat Face (ISO 16028) series ensure reliable operation under extreme loads up to 700 bar.

What types of threads are available?

We support all global standards: BSP (parallel pipe), NPT (tapered), and Metric. We can also provide adapters if necessary to match your specific system.

Are your QRCs compatible with global brands?

Yes, our products are fully interchangeable with original Parker, Stucchi, Faster, Dixon, and Inteva couplings according to international ISO specifications.

Trusted by Professionals

A

Andrew Mykolaenko

Technical Director

"We ordered a large batch for our excavator fleet. The metal quality and valve precision are top-notch. Delivered the very next day."

S

Serhiy Bondar

Service Owner

"Flat Face connections work perfectly. The system stays clean, with no leaks even at maximum pressure. The best alternative to top brands."

Need Engineer Consultation?

We will help you select QRCs according to your parameters: working pressure, thread type, and operating conditions. Get a professional calculation in 15 minutes.

Order Phone

+38 (063) 854-34-00

Email

info@hydro-tech.com.ua

Location

Delivery across Ukraine

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Expert Series Comparison

Performance Parameters ISO 7241-A (Classic) ISO 16028 (Flat Face)
Valve Design Poppet type Flat Face (disc)
Fluid Loss at Disconnection ~1.5 – 2.5 ml 0.01 ml (Anti-drip)
Maximum Pressure up to 350 Bar up to 700 Bar
Operating Temperature -25°C ... +125°C -30°C ... +150°C
Seal Material NBR Standard Viton / Polyurethane
Dirt Resistance Medium (requires caps) Maximum (Easy Clean)
Main Advantage Price / Versatility Reliability / Purity

* All HYDROTECH QRC series are fully interchangeable with Parker, Stucchi, and Faster, confirmed by ISO certificates of compliance.

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