Description
Integrating axial adjustment and vibration absorption functions, this telescopic butterfly valve simplifies pipeline installation and maintenance while providing reliable flow control for water supply, drainage, and cooling water systems.
Product Features
Integrated expansion-compensating design: Combines butterfly valve with telescopic joint, eliminating need for separate compensator and reducing installation cost and space.
Axial adjustment capability: Allows ±25mm to ±100mm length adjustment on-site to accommodate pipeline installation tolerances and thermal expansion.
Vibration absorption: Rubber seat and telescopic element dampen pipeline vibrations, protecting connected equipment like pumps.
Bi-directional sealing: Achieves zero leakage in both flow directions, suitable for diverse applications.
Simplified maintenance: Enables valve disassembly without cutting pipes or moving adjacent equipment, greatly facilitating maintenance and replacement.
Locking device: Adjustable position can be locked to prevent unwanted movement after installation.
Accessories & Optional Configurations
Actuation: Worm gearbox with handwheel, electric actuator (on/off or modulating), pneumatic actuator (double-acting or spring-return)
Position Indication: Limit switch box, continuous positioner (4-20mA), proximity sensors
Locking Mechanism: Adjustable locking nut or pin to secure set extension length
Extension Stem: For buried or high-reach installations
Special Coating: Fusion-bonded epoxy, polyurethane, or cement lining for severe services
Gaskets: Included flange gaskets for ease of installation
Product Parameters Table
|
Parameter |
Specification |
|
Product Name |
DI Socket Fittings with Self-anchoring Joint |
|
Material |
Ductile Iron 500-7 |
|
Pressure Rating |
PN10-PN25 |
|
Joint Type |
Self-anchoring Mechanism |
|
Size Range |
DN100 - DN600 |
|
Locking Type |
Integrated Restraint System |
|
Temperature Range |
-30°C to 80°C |
|
Coating |
Zinc-Aluminum + Bitumen |
|
Standards |
ISO 2531, EN 545 |
Manufacturing Process
We select quality raw materials. The furnace melts iron completely. We add alloy elements. This creates ductile structure. We cast fittings precisely. Machines finish joint surfaces. We assemble locking mechanisms. Each component gets testing.
Performance Testing & Quality Assurance
Shell Test: Hydrostatic test at 1.5x rated pressure to verify body and telescopic joint integrity.
Seat Leakage Test: Bi-directional low-pressure air test (or hydrostatic) per EN 12266 to verify bubble-tight shut-off.
Adjustment Mechanism Test: Verification of smooth telescopic operation and locking function.
Material Certification: Mill certificates for castings and trim materials available.
Coating Inspection: Holiday detection and thickness measurement.
Factory Acceptance Test (FAT): Customer witnessing available upon request.
Installation Steps
Prepare trench properly. Check fitting condition. Clean socket and spigot. Apply lubricant to seal. Push components together. Hear click sound. Verify lock engagement. Test connection security.
Product Advantages
Prevents joint separation
Handles high pressure
Resists ground movement
Easy installation process
Saves installation time
Reduces maintenance needs
Ensures system safety
Packaging Details
We use heavy wooden crates. Steel straps secure fittings. Protective caps cover ends. Cushioning prevents damage. Clear labels show handling. Weather protection included.
After-Sales Service
We provide technical support. We offer installation guidance. We supply spare parts. We respond within 24 hours. We solve problems quickly. We ensure customer satisfaction.
Our Advantages
As a well-known manufacturer of ductile iron pipes in China, Jincheng Tianyi Casting Co., Ltd. has been deeply engaged in the ductile iron pipe industry for thirteen years. It has achieved a transformation from a small-scale operation to semi-automatic mechanized operations, from small warehouses to large-scale open-air configurable warehouses. The total investment and operation amount of the project exceeds 600 million yuan. The company covers an area of 300 acres. The company has over 800 employees, including 20 professional managers and 36 quality control managers.
Accessories & Optional Configurations
Actuation: Worm gearbox with handwheel, electric actuator (on/off or modulating), pneumatic actuator (double-acting or spring-return)
Position Indication: Limit switch box, continuous positioner (4-20mA), proximity sensors
Locking Mechanism: Adjustable locking nut or pin to secure set extension length
Extension Stem: For buried or high-reach installations
Special Coating: Fusion-bonded epoxy, polyurethane, or cement lining for severe services
Gaskets: Included flange gaskets for ease of installation
