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Minsup & Surelock Style Claw Couplings – Heavy-Duty Hose Connections That Hold Pressure

In the demanding world of mining, tunnelling, construction, and heavy civil infrastructure, hose failures aren’t just inconvenient—they’re expensive, hazardous and time-wasting. That’s why Fox Global stocks the complete lineup of Minsup Type A and Surelock Type S claw couplings—high-quality hose fittings engineered to endure the toughest conditions on site.

These claw couplings have earned their place in every kit bag and compressor line for a reason: reliable sealing, universal compatibility, fast connection, and pressure ratings that don’t let you down.

What Are Minsup Type A and Surelock Type S Couplings?

Claw couplings (sometimes called lug or “S-claw / A-claw” couplings) are quick-connect industrial hose fittings. The Minsup Type A and Surelock Type S are two of the most widely used types across Australian and global worksites. Their defining feature is a universal twin-lug claw profile, allowing two fittings to interlock regardless of gender or hose size (provided the type is the same).

Fox Global carries both:

Minsup Type A Standard Seal (500psi working pressure)
Minsup Type A Bellow Seal (1000psi working pressure)
Surelock Type S Bellow Seal (1000psi working pressure, including large-head 3” models)

High-Pressure Performance – 500psi or 1000psi? You Decide

Fox Global makes it easy to select the right coupling for the job.

✔️ Standard Seal Couplings (500psi WP)

Rubber seal
Ideal for general water and air service
Cost-effective

✔️ Bellow Seal Couplings (1000psi WP)

Composite or Viton-style diaphragm
Perfect for high-pressure air tools, grout lines, mining applications
Stainless steel options available for corrosive or wet environments

Bellow seal versions offer double the working pressure, making them ideal for high-vibration, compressor-driven applications where a seal blowout just isn’t an option.

Sizes Available from 3/8” to 3” – Hose Tails, BSP Threads & More

Fox Global stocks every size and configuration:

Fitting Type	Sizes Available	Thread Options	Material
Type A (Standard)	3/8″ – 1¼”	Male & Female BSP	Zinc-Plated SG Iron
Type A (Bellow Seal)	3/8″ – 2″	BSP & Hosetail	SG Iron / Stainless
Surelock Type S	½” – 2″ (Small/Med Head)	Hosetail / BSP	SG Iron / Stainless
Surelock Type S	3″ (Large Head)	Hosetail	SG Iron (500psi WP)

Every claw coupling is interchangeable within its type—ensuring quick changeovers on busy sites.

Common Uses: Built for Versatility in Every Sector

Whether you’re running a high-pressure grout pump, a site compressor, or laying out temporary water supply to a drill pad, these couplings are made for the job.

✅ Compressed Air

Compatible with all major compressor outlets
Use with jackhammers, breakers, drills and rock bolters
Whip hoses and locking pins essential for safety

✅ Water & Washdown

Suitable for general water distribution, site washdown, and tank transfer
Composite seals offer longer life in wet and abrasive conditions

✅ Grout, Cement & Slurry

Stainless Surelock Type S ideal for abrasive grouts and slurries
Secure connection reduces blowouts and leaks

✅ Mining & Tunnelling

Designed for harsh environments
Fast, safe, tool-less connections across long hose runs

✅ Civil Construction & Infrastructure

Ideal for temporary air or water lines
Widely used in road building, dewatering, dust suppression and drilling

Fitted With Confidence – Clamp Systems, Pins & Safety

Every Fox Global claw coupling is supported with accessories:

✅ Boss-style Claw Fitting Clamps (2-bolt or 4-bolt)
✅ Safety Locking Pins – Prevent coupling separation under vibration
✅ Replacement Seals – Natural rubber, Viton and composite options

Clamps are designed to hold hose tails securely in place, ensuring maximum grip and safety at pressure.

Don’t Mix and Match: Type A ≠ Type S

A word of caution—do not mix Type A and Type S couplings. The claw profiles are different and may appear similar but will not properly engage under pressure.

Always match:

✅ Type A to Type A
✅ Type S to Type S

Fox Global can assist with identifying any existing fittings to ensure correct replacement or system upgrades.

Built Tough: Why Minsup & Surelock?

🛠️ Quick connect and disconnect
💪 Strong 500–1000psi working pressure ratings
🔁 Universal claw compatibility (within type)
🧰 No tools required for connection
🔩 Heavy-duty materials – SG Iron and Stainless Steel
🌧️ Corrosion resistance and UV tolerance

Backed by decades of field performance and trusted by contractors across Australia, Minsup couplings are the gold standard.

Need a Coupling Now? Fox Global Has You Covered

At Fox Global, we carry:

Full Type A & Type S coupling ranges
All sizes from 3/8″ up to 3″
Male/female BSP, hose tail and three-way/blank configurations
Clamps, pins, seal kits & hose to suit

Whether you’re running one grout line or building a full tunnel setup, we’ll get it to you fast—with dispatch-ready stock and fast turnaround across Sydney, NSW and beyond.