Dry Break Thread-to-Connect Quick Coupler
Thread-together steel high-impulse 5,000 psi dry-break coupler with Acme threads and tubular valve — for mining and high-impulse hydraulic circuits. Connect/disconnect against pressures to 750 psi.
Key features
- Series: QC-DB
- Application Class: Hydraulic
- Valving: Dry Break
- Connection Method: Thread-to-Connect
- Connect Under Pressure
- Maximum Operating Pressure: 345 bar
- Series
- QC-DB
- Application Class
- Hydraulic
- Valving
- Dry Break
- Available Body Sizes
- 1", 1-1/4"
- Connection Method
- Thread-to-Connect
- Flush Face / No-Spill
- no
Product description
The Dry Break Thread-to-Connect Quick Coupler is a hydraulic quick-disconnect coupling in the Indus QC-DB range. Thread-together steel high-impulse 5,000 psi dry-break coupler with Acme threads and tubular valve — for mining and high-impulse hydraulic circuits. Connect/disconnect against pressures to 750 psi.
Working pressure to 345 bar (5004 psi) at the smallest body size, with minimum burst pressure of 1034 bar. Thread-to-Connect connection — dry break variant.
Construction & features
- Connection method: Thread-to-Connect
- Valving: Dry Break
- Interchanges with: Parker FH high-impulse, Stucchi A-HP, Eaton FD86
Available variants — specify in your RFQ
Indus supplies the full QC-DB range. Specify the configuration that matches your hose end and operating envelope and we will quote against it.
- Coupling halves: Male, Female, Complete Set, Dust Cap/Plug, Bulkhead Flange (steel)
- Body sizes: 1", 1-1/4"
- Body materials: Carbon Steel (zinc trivalent chromate plated)
- Seal materials: Buna-N, with Teflon back-up rings
- Port thread types: Female NPT, Female SAE O-ring
Performance
- Maximum operating pressure: 345 bar (5004 psi) at the smallest size; derates with diameter
- Minimum burst pressure: 1034 bar (14997 psi)
- Rated flow (largest size): up to 284 L/min
- Vacuum rating: 28 in./Hg
- Operating temperature range: -40°C to +100°C (varies by seal compound; specify in RFQ)
Replacing an existing coupling?
This coupler is dimensionally interchangeable with Eaton FD86, and with Parker FH high-impulse, Stucchi A-HP. If you are matching an existing fleet, quote the coupling you are replacing on the RFQ and we will confirm the mating half before you order.
How to order
Confirm the coupling half (male / female / complete set / dust cap), body size, port thread type and size, seal compound and body material. Indus quotes with material certification on request, and air-freight or sea-freight to the UAE and wider GCC. Standard lead time 14 days from order; stocked configurations ship the same week.
Companion products
Indus also supplies the matching dust caps, dust plugs and seal repair kits for this series — add them to the same RFQ. For a hose assembly terminated with this coupler, request a complete assembly quote and we will supply it tested at 1.5× working pressure with a witness-test certificate.
Identification
| Parameter | Value |
|---|---|
| Series | QC-DB |
| Application Class | Hydraulic |
| Valving | Dry Break |
Variants
| Parameter | Value |
|---|---|
| Available Body Sizes | 1", 1-1/4" |
| Available Body Materials | Carbon Steel (zinc trivalent chromate plated) |
| Available Seal Materials | Buna-N, with Teflon back-up rings |
| Available Port Thread Types | Female NPT, Female SAE O-ring |
| Available Coupling Halves | Male, Female, Complete Set, Dust Cap/Plug, Bulkhead Flange (steel) |
Construction
| Parameter | Value |
|---|---|
| Connection Method | Thread-to-Connect |
| Flush Face / No-Spill | no |
| Connect Under Pressure | yes |
Performance
| Parameter | Value |
|---|---|
| Maximum Operating Pressure | 345 bar |
| Minimum Burst Pressure | 1034 bar |
| Rated Flow (Largest Size) | 284 L/min |
| Vacuum Rating | 28 in./Hg |
| Operating Temperature Min | -40 °C |
| Operating Temperature Max | 100 °C |
Compliance
| Parameter | Value |
|---|---|
| Interchanges With (Competitor Brands) | Parker FH high-impulse, Stucchi A-HP, Eaton FD86 |
Shipping & lead time
What is the Indus QC-DB range used for?▾
What is the maximum working pressure?▾
What sizes are available?▾
What seal and body materials are available?▾
What port thread options are available?▾
Does this coupling connect under pressure?▾
Will this replace the coupling already on my machine?▾
What is the typical lead time?▾
Shipped worldwide from our Dubai warehouse. Transit, routes and documentation for 126 destinations
The same part, in the designations used across European and Gulf trade catalogues.
- de
- Schnellkupplung
- fr
- raccord rapide
- es
- acoplamiento rápido
- it
- innesto rapido
From the blog
Written about this range
Safety & HSE
Trapped pressure: why the coupler will not connect, and how to release it safely
An attachment left in the sun all morning can build enough pressure in a disconnected line to make a coupler impossible to push home. Forcing it is the part that hurts people.
5 min read
Failure analysis
What splits a female coupler half
A cracked female coupler body is not a manufacturing defect and it is not bad luck. It is almost always one of three things, and two of them are avoidable for nothing.
4 min read
Machine down
Tractors and implements: the couplers are older than the machine
Agricultural hydraulics run on a coupler standard that has barely changed in decades, which is why a 1990s implement still connects to a new tractor — and why grit gets into everything.
3 min read
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