HQC Series High-Flow Quick-Disconnect Couplers
Engineering Overview & Structural Features
The HQC Series High-Flow Quick-Disconnect Couplers are engineered for rapid, secure connection and disconnection of high-pressure pumps, hydraulic hoses, cylinders, and bolting tools operating at pressures from 700 Bar (10,000 PSI) up to 1,400 Bar (20,000 PSI). Featuring spring-loaded self-sealing poppet check valves, hardened alloy steel locking balls, and positive-grip knurled sleeves, HQC couplers prevent fluid loss and air inclusion during tool changeovers. Available in standard 3/8" NPT, compact 1/4" NPT, low-height flat cylinder profiles, and G-1/4" ultra-high pressure configurations.
700 to 1,400 Bar Working Pressure
Precision-machined from heat-treated hardened alloy steel, delivering proven fatigue endurance under extreme pulsation cycles from 10,000 PSI up to 20,000 PSI.
Zero-Leakage Self-Sealing Poppets
Dual self-sealing internal poppet check valves snap shut instantly upon coupler uncoupling, preventing hydraulic oil spills and keeping workplace decks clean and safe.
High-Flow Streamlined Fluid Path
Engineered with generous internal flow passages to minimize fluid turbulence and pressure drop, maximizing hydraulic tool speed and cylinder retraction responsiveness.
Hardened Ball Mechanical Locking
Circumferential high-strength alloy steel locking balls seated in precision-machined grooves provide positive 360-degree connection security against accidental release.
Positive-Grip Knurled Sleeve
Diamond-pattern knurled sliding collar allows smooth one-handed push-to-connect operation even when wearing heavy, grease-coated protective work gloves.
Universal Fleet Interchangeability
Fully interchangeable with industry standard 700 Bar high-flow coupler series (e.g., Enerpac C-604, Parker 3000), making fleet integration seamless and worry-free.
OEM Cross-Reference & Dimensional Interchangeability
Heavy-duty high-flow quick-disconnect hydraulic couplers rated for 700 to 1,400 Bar (10,000 to 20,000 PSI), engineered for leak-free rapid tool interchange, positive ball locking, and automatic poppet sealing across 1/4" and 3/8" NPT and G-1/4" lines. 700 - 1400 Bar Quick Couplers.
Enerpac®, SPX Flow®, Power Team®, Simplex®, Hytorc®, Holmatro® and other brand names are registered trademarks of their respective owners. HydraStark is an independent manufacturer and is not affiliated with, authorized or endorsed by these companies. OEM model numbers are listed for dimensional and specification reference only; please verify fit with our engineers before ordering.
PRODUCT SERIES
HQC Series High-Flow Quick-Disconnect Couplers
RATED WORKING PRESSURE
700 Bar (10,000 PSI) to 1,400 Bar (20,000 PSI)
VALVING ARCHITECTURE
Dual Self-Sealing Poppet Check Valves for Zero Disconnect Fluid Loss
Specifications
Model Number | Max Working Pressure | Flow Architecture | Port Thread Connection | Female Coupler (Body) | Male Coupler (Nipple) | Application System Remarks |
|---|---|---|---|---|---|---|
| HQC-201 | 700 Bar (10,000 PSI) | Standard High Flow | 3/8"-18 NPT Female | HQC-201A | HQC-201B | Standard 700 Bar hydraulic pump, hose & cylinder circuit coupler |
| HQC-202 | 700 Bar (10,000 PSI) | Compact High Flow | 1/4"-18 NPT Female | HQC-202A | HQC-202B | Compact hydraulic tools, torque pumps & low-profile jacks |
| HQC-203 | 700 Bar (10,000 PSI) | Special Low-Profile High Flow | 3/8"-18 NPT Female | HQC-203A | HQC-203B | Dedicated coupler profile engineered for HSF-50 low-height flat cylinders |
| HQC-204 | 1,400 Bar (20,000 PSI) | Ultra-High Pressure High Flow | G-1/4" Female (BSPP Cone) | HQC-204A | HQC-204B | 1,400-1,500 Bar ultra-high pressure bolt tensioning & bearing tool lines |
Required System Components
Frequently Asked Questions
Q1How does the HydraStark HQC compare with the Enerpac CR-400?
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How does the HydraStark HQC compare with the Enerpac CR-400?
The HydraStark HQC range (HQC Series High-Flow Quick-Disconnect Couplers) is positioned as an alternative to the Enerpac CR-400 (OEM part numbers such as CR-400, CR400, C-604, CH-604). Enerpac is a registered trademark of its owner; the reference is provided for dimensional and technical comparison only. Mounting dimensions, ratings and interfaces are listed in the specification table on this page — please confirm them against your existing equipment, or send us your OEM part number and our engineers will check compatibility before you order.
Q2What are the key specifications of the HQC?
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What are the key specifications of the HQC?
Product Series: HQC Series High-Flow Quick-Disconnect Couplers; Rated Working Pressure: 700 Bar (10,000 PSI) to 1,400 Bar (20,000 PSI); Valving Architecture: Dual Self-Sealing Poppet Check Valves for Zero Disconnect Fluid Loss; Mechanical Locking Mechanism: Circumferential Alloy Steel Locking Balls with Spring-Loaded Knurled Sleeve; Port Thread Connections: 3/8"-18 Npt (hqc-201/203), 1/4"-18 Npt (hqc-202), G-1/4" Bspp (hqc-204). Full specifications and dimensions are given in the specification table below.
Q3Which models are available in the HQC series?
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Which models are available in the HQC series?
The specification table lists 4 models: HQC-201, HQC-202, HQC-203, HQC-204. For non-standard requirements, please describe them in the inquiry form.
Q4What are the lead time, warranty and shipping options for the HQC?
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What are the lead time, warranty and shipping options for the HQC?
Lead time is typically 2–3 business days when the model is in stock and 7–35 business days otherwise. Warranty is 12 months after receipt of goods. Shipping is available by sea freight, air freight or international express (DHL, FedEx, UPS). Send your requirements through the inquiry form for an exact quotation and delivery date.