DSTHERM INDUSTRIAL LIMITED
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Specification
What is Valve Cartridge Extension Sleeve ?
Valve Cartridge Extension Sleeve is a key transition accessory in the piping system to solve the problem of insufficient installation space or limited operation. It is especially important in narrow or hidden spaces (such as concealed water tanks and dense pipe wells).
1.Operational Extension
Extends valve stem length to adapt to confined or hard-to-reach installations (e.g., behind walls, underground pipelines).
Enables safe operation in high-temperature or hazardous environments by relocating the actuator/handwheel to accessible areas.
2.Compatibility Enhancement
Bridges mismatched interfaces between valves and actuators in retrofit projects.
Supports standardized valve systems (ISO 5211, DIN 3338) for multi-brand compatibility.
3.Corrosion & Wear Resistance
Chrome plating provides a protective layer against abrasion, chemical exposure, and oxidation, extending service life in humid or corrosive conditions (e.g., marine, chemical plants).
Structural Features
1.Material & Coating
Body: High-grade brass (C36000/C37700) for superior machinability and pressure resistance (up to 1.6 MPa).
Surface: Electroplated chromium (10–15 μm thickness) for enhanced hardness (800–1000 HV) and smooth operation.
2.Precision Engineering
Internal splines/hexagonal bore to prevent stem rotation during operation.
Threaded ends (NPT/BSPP) with PTFE sealing tape grooves for leak-proof connections.
3.Customizable Design
Available in standard sizes (1/2", 3/4", 1") with on-demand customization for:
Anti-vibration slots or thermal expansion joints.
Flanged ends for bolted systems.
Competitive Edge
Tailored Solutions: DSTHERM’s CNC machining allows ±0.1 mm dimensional accuracy for niche applications.
Cost Efficiency: Chrome plating reduces maintenance frequency by 40% compared to uncoated brass sleeves.
Applications
| Scene | Principle of action | Problem solved |
| Extended operating depth | Installed between the valve core (such as angle valve, mixing valve) and the pipeline to increase the distance between the valve body and the pipeline connection point. | When the valve core is buried too deep in the wall/equipment, ordinary tools cannot reach the mounting nuts. |
| Compatible with non-standard installation | Compensate for the error in the pre-buried position of the pipeline (such as the reserved pipe mouth deviating from the design position by ±30mm). | Avoid the inability to install the valve due to pipeline misalignment. |
| Auxiliary sealing protection | The internal sealing step forms a double sealing layer with the valve core thread (main seal + extension piece backup seal). | Reduce the risk of water leaks due to failure of a single seal. |
| Adapt to different diameter pipes | Some are designed as variable diameter structures (such as DN20→DN15) to connect pipes and valves of different sizes. | Simplify the need for diameter changes in piping systems. |
Example: A Dubai hotel retrofit project required extending 120 bathroom mixing valves through concrete walls. DSTHERM supplied 300 mm chrome-plated sleeves with M30×1.5 threads, enabling tool-free installation and eliminating post-construction leakage.
For custom specifications, provide valve type (ball/gate/globe), stem diameter, and environmental conditions (temperature/pressure/media).
(Note: Technical parameters can be expanded based on DSTHERM’s actual product data.)
Packaging & Delivery
Packaging Details:
(1) Export safe box.
(2)Inner boxes with filler.
(3)Outpackage is high quality cartons.
(4)Custom package.
What can we do for you?
1. Sample is available.
2. Independent R&D, ISO manufacture, precise quality standards, modern logistics management, and sound marketing strategy.
3. Inquiry replied within 24 hours.
4. Patented products.
5. OEM or ODM is available.
6. Some extra accessories can be supplied.
7.The larger quantity you order,the more competitive prices you'll get.
8. Necessary Certificates can be supplied.
We Will Be Your Better Choice!