Drainage saddles provide a fast, reliable and cost-effective way to create lateral connections into existing drainage pipelines. Whether upgrading a sewer network, adding new property connections, or installing surface water drainage, these fittings eliminate the need for factory-made junctions or large excavation works. They offer strong sealing performance, straightforward installation, and compatibility with a wide range of host pipe materials and diameters.
What Are Drainage Saddles Used For?
Drainage saddles are designed to connect a branch (lateral) pipe into a main pipeline by cutting a precise hole in the host pipe and securing the saddle over it. This creates a watertight connection suitable for foul water, surface water and stormwater drainage systems. They are ideal for:
New sewer or surface-water connections
Road gully and building drainage links
Retrofitting into existing networks without full pipe replacement
Minimising excavation, disruption and installation time
Fernco Unisaddle (DN450+)
A heavy-duty saddle designed for connecting lateral pipes into large-diameter concrete pipelines (DN450+). It delivers extremely strong sealing performance, WRc-approved reliability and long-term durability.
Key Advantages:
Creates new junctions in existing sewer or surface water mains without major excavations
Universal sealing system accommodates a wide variety of host pipe brands and tolerances
Withstands up to 20 kN vertical load for high-demand infrastructure environments
Rated for 1 bar pressure and vacuum conditions
Allows up to 15° lateral deflection, offering useful installation flexibility
Compatible with DN450 - DN1500 laterals
Ideal Applications:
Major sewer upgrades
Infrastructure and utilities projects
Deep or high-load drainage pipelines
Retrofitting new property drainage into existing mains
Fernco TA Saddle
A flexible, quick-fit saddle designed for smooth PVC sewer and surface water pipes. It eliminates the need for pre-fabricated junctions and enables rapid on-site lateral connections in 45° or 90° options.
Key Advantages:
Suitable for main pipe diameters 160–600 mm (depending on model)
Choice of 45° or 90° connection angles
Installs quickly with no specialist equipment
Withstands up to 0.5 bar internal pressure
Reduces project costs by avoiding manufacturer-made junction pieces
Durable PVC and stainless steel construction withstands typical site conditions
Ideal Applications:
New build housing developments
Road gullies and surface water links
PVC stormwater and sewer networks
Sites requiring fast, economical installation
Fernco Storm-T Saddle
A specialised saddle for stormwater and rainwater systems, connecting DN150 lateral pipes into DN300–600 host pipes. It features a fully tool-free installation once the cored hole is prepared, and requires no adhesives or concrete.
Key Advantages:
Universal fit for a wide range of plastic stormwater pipes
Tapered internal edges promote smooth flow and reduce blockage risk
Designed with a depth-setting system to accommodate different wall thicknesses
Rated to 0.5 bar pressure
Ideal Applications:
Surface water and rainwater diversion systems
Attenuation tanks and soakaway systems
Retrofitting laterals into existing stormwater pipes
Fast installation in all weather conditions
Fernco Unisaddle (DN300–450)
A robust saddle for connecting lateral pipes into DN300–450 concrete or clay pipelines. It requires minimal excavation, provides excellent sealing performance and is WRc-approved for UK water authority acceptance.
Key Advantages:
Suitable for concrete and clay host pipes DN300–450
Rated to 1 bar pressure and vacuum conditions
Withstands 20 kN vertical load and up to 5% pipe deformation
Accepts 7° lateral deflection, aiding alignment on complex sites
Jetting-resistant up to 180 bar, ensuring long-term reliability
Constructed from EPDM, ABS and stainless steel for durability
Ideal Applications:
Surface water and sewer system upgrades
Connecting new property drainage to mid-sized mains
Clay drainage refurbishment projects
Situations where excavation access is limited
If you require any further information, our excellent customer service team is here to help so please call us on 01794 835835.