Dismantling Joints

Dismantling joints provide axial adjustability that compensates for accumulated dimensional tolerances across piping runs. This capability becomes critical in systems where precise pipe cut lengths cannot be assured due to field variability or prefabrication tolerances. Adjustable lengths allow installers to fine-tune joint positions without pipe modification, reducing weld repairs and flange face misalignments. 

Valve Type

Manual or automated valve designed for easy dismantling and maintenance.

Flow Regulation Method

Modulates fluid flow via adjustable valve opening for precise control.

Differential Pressure Range

Operates efficiently within 0.1 to 10 bar differential pressure range.

Hydraulic Authority Recommendation

Recommended hydraulic authority between 0.3 and 0.6 for stable flow control.

Valve Characteristic Curve

Linear or equal percentage curves to match various system requirements.

Product Description

Dismantling joints enable controlled separation at fixed points by offering a decoupling interface that can be accessed without disturbing adjacent anchor blocks or restraints. Integrated axial restraint systems using tensioned tie bars and compression rings ensure that pipeline thrust loads are maintained during both pressurized service and component removal. 

Test Point Configuration

Equipped with integrated test points for pressure and flow verification.

Maximum Allowable Flow Velocity

Maximum fluid velocity allowed is 3 meters per second to avoid erosion.

Leakage Class (per EN 12266-1)

Achieves tight sealing with leakage class A or better per EN 12266-1.

Body Material Options

Available in stainless steel, brass, or carbon steel for durability.

Design Pressure Class

Rated for PN16 or PN25 pressure classes depending on application needs.

Thermal Expansion Compatibility

Accommodates thermal expansion without compromising valve integrity or seal.

Installation Sensitivity

Designed for flexible installation; minimal sensitivity to orientation or alignment.

Control Accuracy

Ensures flow regulation within ±2% of setpoint for precise performance.

Position Repeatability

Valve position repeatability within ±1% for reliable operational consistency.

Technical Advantages

Dismantling joints are engineered with full-resistance tie rod assemblies and reinforced end flanges that are torque-rated to exceed pipe yield loads. Load distribution calculations account for both static and dynamic thrust vectors, ensuring reliable mechanical performance under cyclic load conditions. Finite Element Analysis (FEA) validations are typically applied during design to confirm stress margins at critical junctions. 

Dismantling joints are manufactured to interface across multiple international standards (EN 1092-1, ASME B16.5, BS 4504, ISO 7005) through dual-drilling options and custom flange thickness profiles. Materials are selected based on galvanic compatibility with host pipes, using carbon steel, ductile iron, or stainless steel with optional metallurgical overlays. This eliminates the need for custom transitions or welded adapters during mixed-standard integration. 

Let's Get Started

Need reliable Flanges for your next project? Get in touch with us today, and we’ll help you find exactly what you need!

Industry Applications

Water Treatment Plants

Allows isolation and removal of valves or pumps without disturbing adjacent pipework in high-pressure filtration or distribution loops.

Thermal Power Stations

Enables thermal expansion accommodation and quick equipment replacement in high-temperature steam and condensate piping systems.

Petrochemical Processing Units

Facilitates precise alignment and axial load management in corrosion-resistant piping for aggressive chemical and solvent transfer systems.

Desalination Facilities

Supports modular component servicing under high-pressure brine discharge and intake conditions with integrated sealing and restraint systems.

District Cooling Networks

Provides adjustability and thrust control for large-diameter chilled water pipelines subject to thermal contraction and expansion cycles.

Wastewater Pumping Stations

Ensures fast pump or valve replacement in submerged or confined installations with full axial restraint under transient hydraulic conditions.

Dismantling Joints

Optimizing Lifecycle Costs Through Modular Field Servicing

Dismantling joints are designed for field-servicability with replaceable seal kits, accessible nut-and-bolt assemblies, and modular component architecture that allows partial disassembly without total system drain-down. Inspection points are incorporated for torque verification and seal wear assessment, contributing to lower mean-time-to-repair (MTTR) and improved asset lifecycle planning. 

Dismantling joints are pressure-rated up to PN40/Class 300 with hydrostatic test factors in accordance with ISO 2531 or API 598. Sealing is achieved via EPDM, NBR, or PTFE-encapsulated gaskets positioned in CNC-machined grooves to prevent extrusion or migration under thermal cycling. Internals are coated with fusion-bonded epoxy or ceramic-filled polymers to resist corrosion under immersed service, and external surfaces meet ISO 12944 C5-M standards for offshore or industrial atmospheres. 

Having Doubts? Our FAQ

Check all our Frequently Asked Question

How does Frigate ensure the structural integrity of dismantling joints under fluctuating pressure cycles?

Frigate designs its dismantling joints using advanced Finite Element Analysis (FEA) to simulate pressure fluctuations and cyclic loading. High-strength materials and precision-machined tie rods maintain dimensional stability and resist fatigue. Seal materials are selected to endure repeated compression without degradation. This ensures the joint maintains pressure integrity throughout its service life.

What material options does Frigate offer for dismantling joints used in corrosive environments?

Frigate provides dismantling joints in carbon steel, stainless steel, and ductile iron with protective coatings like epoxy or fusion-bonded epoxy. For highly corrosive media, optional internal liners or specialty alloys such as duplex stainless steel are available. These material choices prevent corrosion-related failures and extend operational longevity. Material selection is based on fluid chemistry and temperature conditions.

How does Frigate accommodate dimensional adjustments during field installation of dismantling joints?

Frigate’s dismantling joints feature axial telescoping design with calibrated adjustment ranges, typically ±25 mm, allowing installers to compensate for pipe length variances. Tie rods maintain alignment and prevent joint separation under pressure. Flange drilling can be customized to match existing system standards for seamless integration. This reduces on-site modifications and welding requirements.

What testing procedures does Frigate perform to verify dismantling joint performance before delivery?

Each dismantling joint undergoes hydrostatic pressure testing at 1.5 times its rated pressure to confirm sealing and structural integrity. Dimensional inspections verify flange drilling and axial adjustability meet specifications. Torque tests ensure tie rods and bolts meet mechanical strength requirements. Documentation of all tests is provided for quality assurance and traceability.

How does Frigate’s dismantling joint design address thermal expansion in high-temperature pipeline systems?

The joints are engineered with axial sliding capability to absorb thermal elongation or contraction without inducing excessive flange stress. Reinforced tie rods provide axial restraint to manage pipeline thrust loads during temperature changes. High-temperature gasket materials such as graphite or ceramic composites maintain sealing under expansion cycles. This design prevents joint deformation and leakage over time.

Get Clarity with our Manufacturing Insights

We'd love to Manufacture for you!

Submit the form below and our representative will be in touch shortly.

LOCATIONS

Global Sales Office

818, Preakness lane, Coppell, Texas, USA – 75019

Registered Office

10-A, First Floor, V.V Complex, Prakash Nagar, Thiruverumbur, Trichy-620013, Tamil Nadu, India.

Operations Office

9/1, Poonthottam Nagar, Ramanandha Nagar, Saravanampatti, Coimbatore-641035, Tamil Nadu, India. ㅤ

Other Locations

GENERAL ENQUIRIES

Get Quote
Support All File Formats Including - STEP | STP | SLDPRT | STL | DXF | IPT | X_T | X_B | 3DXML | CATPART | PRT | SAT | 3MF | JT files

Dismantling Joints

Need reliable wires and cables for your next project? Get in touch with us today, and we’ll help you find exactly what you need!

Get Latest Price

Get Price Form

Dismantling Joints

Need reliable Machining for your next project? Get in touch with us today, and we’ll help you find exactly what you need!

Get Latest Price

Get Price Form