Grooved Tapped Blank

Grooved Tapped Blanks are ductile iron fittings used to seal the end of a grooved pipeline while incorporating a threaded (tapped) outlet. This allows the system to be safely blanked off while still providing a ready-made connection point for instruments, drains, pressure testing, or future branch extensions.

 
They are supplied in red painted or hot dip galvanised finishes and are widely used in fire protection, HVAC, water distribution and industrial piping systems where flexibility and future adaptability are important.

Key Features

• Combines end blanking with threaded take-off point 
• Ductile iron construction for high strength and durability 
• Grooved ends for fast mechanical installation 
• Integrated BSP threaded outlet (tapped connection) 
• Red oxide painted or hot dip galvanised finishes 
• EPDM gasket sealing for leak-resistant performance 
• Suitable for fire protection and mechanical services 
• Compatible with standard grooved pipe systems

Product Description

 Grooved tapped blanks are designed to close off the end of a grooved pipeline while still allowing access to the system via an integrated threaded outlet. This makes them ideal for installations where future modification, drainage, venting or instrumentation points may be required without altering the main pipe run.

 
The grooved connection uses a ductile iron housing and EPDM gasket system, which is compressed around the pipe ends using a mechanical coupling. Once tightened, the assembly forms a secure, pressure-resistant seal that becomes tighter under system pressure.

 
Manufactured from ductile iron, these fittings provide excellent mechanical strength, impact resistance and long-term durability. They are commonly rated for working pressures up to around 20–35 bar depending on system configuration and coupling selection, making them suitable for demanding mechanical and fire protection applications.

 
The tapped outlet is typically BSP threaded, allowing direct connection of valves, test points, drains or auxiliary pipework. This adds flexibility to system design, particularly in fire sprinkler systems where inspection and testing points are often required.

 
Grooved systems significantly reduce installation time compared with welded or threaded alternatives, while also allowing easier maintenance and system modification without hot works or system shutdown.

 
Finishes are typically red oxide painted for fire protection identification or internal installations, and hot dip galvanised for enhanced corrosion resistance in external or more aggressive environments.

Applications

Ideal for fire sprinkler systems, HVAC installations, chilled water systems, water distribution and industrial pipework where a sealed pipe termination with an integrated threaded connection point is required.

We offer nationwide next working day delivery on stocked products for orders placed before 12:00 pm, subject to stock availability.

Delivery charges are calculated based on your order's size, weight and destination and will be shown at checkout where applicable.

Some oversized, bespoke or non-stock items may require additional lead time. If this affects your order, we'll let you know as soon as possible.

Collection is available from our warehouses in Rochdale, Halesowen and East Kilbride, subject to stock availability. Please check the individual product listing for collection availability.