Dismantling Joint
DN300 L=350
A DN300 dismantling joint is a specialized pipe fitting designed to simplify the installation, maintenance, and replacement of flanged equipment within a pipeline system. The designation "DN300" refers to a nominal diameter of 300 millimeters (approximately 12 inches), indicating the size of the pipe connection it is designed to fit.
As a core function, this fitting provides **axial adjustability**, allowing the joint to be shortened or lengthened to accommodate the exact space between two fixed flanges. This telescoping action compensates for minor installation errors and pipe misalignment, eliminating the need for precise measurements during assembly. More importantly, it creates necessary clearance for easy removal of pumps, valves, meters, and other equipment for servicing or replacement without cutting or forcibly moving the rest of the pipeline.
As a core function, this fitting provides **axial adjustability**, allowing the joint to be shortened or lengthened to accommodate the exact space between two fixed flanges. This telescoping action compensates for minor installation errors and pipe misalignment, eliminating the need for precise measurements during assembly. More importantly, it creates necessary clearance for easy removal of pumps, valves, meters, and other equipment for servicing or replacement without cutting or forcibly moving the rest of the pipeline.
Delivery
FOB
minimum order
2 pieces
Supply Ability
5pieces / Month
Country of Origin
China
Stock Time
20-25Day
Quantity:
US $50.00 - US $10000.00
/ pieces
## Key Technical Features
### Size and Pressure Ratings
DN300 dismantling joints are manufactured in various pressure classes to suit different applications. Common ratings include:
DN300 dismantling joints are manufactured in various pressure classes to suit different applications. Common ratings include:
- **PN10** (10 bar / 145 psi) – standard for many water and wastewater applications
- **PN16** (16 bar / 232 psi) – commonly used in medium-pressure systems
- **PN25** (25 bar / 363 psi) – for higher-pressure industrial applications
- **PN40** (40 bar / 580 psi) – for high-pressure requirements
- **PN16** (16 bar / 232 psi) – commonly used in medium-pressure systems
- **PN25** (25 bar / 363 psi) – for higher-pressure industrial applications
- **PN40** (40 bar / 580 psi) – for high-pressure requirements
### Axial Adjustment and Deflection
The standard axial adjustment for a DN300 dismantling joint is typically ±60 mm (±2.36 inches), providing 120 mm of total adjustment range. This generous range allows significant flexibility during installation.
The standard axial adjustment for a DN300 dismantling joint is typically ±60 mm (±2.36 inches), providing 120 mm of total adjustment range. This generous range allows significant flexibility during installation.
Angular deflection capability for DN300 is typically up to 4 degrees, which can be set during installation. Once the joint is bolted and tie rods are secured, the assembly becomes fixed at the set angle, accommodating minor pipeline misalignment during construction.
### Materials of Construction
DN300 dismantling joints are available in a variety of materials to suit different media and environmental conditions:
DN300 dismantling joints are available in a variety of materials to suit different media and environmental conditions:
- Carbon Steel – offers high tensile strength and impact resistance, ideal for high-pressure applications
- Ductile Iron – provides excellent durability and corrosion resistance for water and wastewater applications
- Stainless Steel (SS304/SS316) – for corrosive environments or aggressive media
- Ductile Iron – provides excellent durability and corrosion resistance for water and wastewater applications
- Stainless Steel (SS304/SS316) – for corrosive environments or aggressive media
Sealing and Coatings
- Seals: Typically EPDM rubber (temperature range -10°C to +80°C), with options for NBR or NR depending on the medium
- Surface Coating: Fusion bonded epoxy (FBE) coating with a minimum thickness of 250 microns for excellent corrosion resistance
- Hardware: Zinc-plated or passivated steel, with optional stainless steel (A2/A4) for enhanced corrosion resistance
- Seals: Typically EPDM rubber (temperature range -10°C to +80°C), with options for NBR or NR depending on the medium
- Surface Coating: Fusion bonded epoxy (FBE) coating with a minimum thickness of 250 microns for excellent corrosion resistance
- Hardware: Zinc-plated or passivated steel, with optional stainless steel (A2/A4) for enhanced corrosion resistance
###Bolt and Tie Rod Specifications
- Flange studs: Typically 8.8-grade carbon steel, zinc-plated
- Tie rods* Typically 4.6-grade steel for adjustment purposes, galvanized or zinc-plated
- Flange studs: Typically 8.8-grade carbon steel, zinc-plated
- Tie rods* Typically 4.6-grade steel for adjustment purposes, galvanized or zinc-plated
