HQ CHUCK VALVE BODY FOR INNER TUBE HEAD
HQ Chuck Valve Body for Inner Tube Head Assembly – Precision-Engineered Component for Wireline Core Drilling
The HQ Chuck Valve Body is a high-precision, heavy-duty component designed for use in the Inner Tube Head Assembly of wireline diamond core drilling systems. It serves as the central housing for the chuck and valve mechanism, enabling smooth operation of the inner tube during core retrieval, locking, and release in HQ drilling setups.
Manufactured from premium-grade alloy steel, this valve body undergoes CNC machining and heat treatment to deliver exceptional dimensional accuracy, strength, and resistance to wear. It ensures reliable sealing and fluid control, allowing drilling fluid to pass efficiently through the inner tube head without leakage — a critical factor for maintaining optimal drilling performance and core quality.
The HQ Chuck Valve Body is designed in compliance with international wireline standards and is fully interchangeable with other leading OEM systems in the HQ series, while also available in BQ, NQ, and PQ sizes for complete core barrel compatibility.
Description
🔩 Key Features and Specifications
🧱 Construction:
Manufactured from heat-treated alloy or nickel-chrome steel for superior mechanical strength and resistance to deformation under high torque and hydraulic pressure.
⚙️ Function:
Acts as the main structural and sealing component of the chuck valve assembly. It secures the chuck, guides the spring and spindle, and ensures proper drilling fluid control through the head assembly.
🔧 Compatibility:
Engineered specifically for HQ wireline drilling systems, but also available for BQ, NQ, and PQ standards. Fully compatible with major OEM core barrel assemblies.
💧 Fluid Control:
Incorporates precision fluid ports and sealing surfaces that regulate pressure and ensure consistent fluid flow during coring and retrieval.
🛠️ Machining Accuracy:
CNC-machined to tight tolerances for perfect thread alignment and smooth fit with adjacent components, preventing wear and leakage.
🧰 Surface Treatment:
Available with anti-corrosion plating (zinc or phosphate finish) for added resistance to rust, wear, and fluid abrasion in harsh drilling conditions.
📏 Standardization:
Manufactured to GSZ-H or equivalent international HQ wireline core drilling specifications.
📋 Technical Specifications
| Feature | Description |
|---|---|
| Product Name | HQ Chuck Valve Body |
| Function | Houses chuck and valve mechanism in inner tube head assembly |
| Series | HQ Wireline Core Drilling System |
| Material | Heat-treated Alloy / Nickel-Chrome Steel |
| Hardness | 48–52 HRC (typical) |
| Surface Finish | Zinc / Phosphate Coated (Anti-Corrosion) |
| Machining | CNC Precision Machined |
| Compatibility | HQ (also available in BQ, NQ, PQ) |
| Applications | Core Drilling, Mineral Exploration, Geotechnical Drilling |
💪 Key Benefits
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✅ Provides smooth chuck operation for efficient core retrieval
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✅ Ensures tight sealing and prevents fluid leakage under pressure
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✅ Delivers high structural integrity and extended wear life
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✅ Reduces maintenance and downtime through accurate machining
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✅ Compatible with standard HQ wireline core barrel assemblies
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✅ Designed for easy field installation and replacement
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✅ Enhances core recovery performance and operational reliability
🧱 Applications
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⛏️ Diamond Core Drilling – For mineral exploration and deep borehole sampling
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🌍 Geotechnical Drilling – For soil and rock core collection in infrastructure projects
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🏗️ Construction & Civil Exploration – Used in foundation and stability testing
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💧 Hydrogeological Drilling – For groundwater and aquifer sampling
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🪓 Mining Exploration Projects – For precise and efficient core retrieval
