Straight Coupling

PVC Pressure Straight Coupling (Cat 7)

Description:
The PVC Pressure Straight Coupling (Cat 7) is designed for joining two pieces of PVC-U pressure pipe of equal sizes in a straight line. This makes it a simple yet essential fitting for extending pipelines or repairing damaged sections.

Made from rigid PVC-U (unplasticised polyvinyl chloride), the coupling provides excellent durability, chemical resistance, and strength under pressure. Pipes are solvent cement jointed into each end of the coupling, ensuring a secure and long-lasting connection.

Key Features:

• Connects two equal-sized PVC pressure pipes
• Secure solvent cement joint (SCJ) system
• Rigid, corrosion-resistant PVC-U construction
• Suitable for potable water and pressure applications
• White or off-white finish for professional installation
• Wide size range available: 12mm to 150mm (larger sizes available on request)

Applications:

• Potable water distribution
• Pumped sewerage and effluent pipelines
• Irrigation and turf watering systems
• Slurry and recycled water transport
• Pressure sewerage systems
• Gas (with special yellow pipe)

Specifications:

• Material: PVC-U (rigid)
• Jointing System: Solvent Cement Joint (SCJ)
• Pressure Rating: PN18 (1800 kPa)
• Pipe Compatibility: PN4.5 – PN18 pressure pipes
• Temperature Range: 0°C to 50°C (special considerations required outside this range)
• Standards:
  • AS/NZS 1477 – PVC pipes and fittings for pressure applications
  • AS/NZS 4020 – Products for use in contact with drinking water
• Compliance: WaterMark certified
• Curing Time: 24 hours required before pressurisation

Performance Notes:

• Designed for above-ground and underground use
• Not typically used in domestic housing plumbing
• Allows secure extension or repair of pressure pipe systems

Variants (Sizes):

• PPF100 — 12mm
• PPF101 — 20mm
• PPF102 — 25mm
• PPF103 — 32mm
• PPF104 — 40mm
• PPF105 — 50mm
• PPF106 — 65mm
• PPF107 — 80mm
• PPF108 — 100mm
• PPF110 — 150mm