Restraining

Smith-Blair Pipe-Lock Joint Restraint Couplings are fabricated steel sleeve restraint couplings that can be used to connect and restrain plain end pipe to plain end pipe.

471 Pipe-Lock DI x DI Restrained Coupling

472 Pipe-Lock PVC x PVC Restrained Coupling 

473 Pipe-Lock PVC x DI Restrained Coupling 

474 Pipe-Lock DI x DI Reducing Restrained Coupling 

475 Pipe-Lock PVC x PVC Reducing Restrained Coupling 

476 Pipe-Lock PVC x DI Reducing Restrained Coupling

477 Pipe-Lock Sleeve Only 

 Smith-Blair Flange-Lock Joint Restraints restrain plain end pipe to plain end pipe and can join IPS PVC or ductile iron OD PVC to ductile iron or carbon steel.

911 Flange-Lock Flange x DI Coupling Adapter

920 Flange-Lock Flange x PVC Coupling Adapter

923 Flange-Lock Flange Weldment Coupling Adapter

Smith-Blair Harness Assemblies should be used where calculations show the forces resulting from a lateral connection, change in direction of the pipeline, unstable soil, thermal expansion/contraction or other service conditions could cause the pipe to move out of the coupling.

Smith-Blair Cam-Lock Joint Restraints save labor by providing superior restraint with fewer wedges and install on IPS size PVC without modifications. The Cam-Lock's lower bolt torque and wider wedges reduce pipe stress. Cam-Lock Features include color-coded nuts and wedges, epoxy coating, visible wedge engagement and longer T-bolts. Available in sizes 3" through 24".

111 Cam-Lock Joint Restraint 

120 Cam-Lock Joint Restraint 

Smith-Blair Anchor Studs are designed as an alternative coupling method to harness assemblies for applications where moderate longitudinal stresses are encountered.

Anchor Studs 

Smith-Blair EZ-W Restraint Couplings for water service are designed with push on gaskets and engineered to simplify installation, restrain the pipe joint and ensure a tight seal. EZ-W Couplings can be used to connect IPS PE to steel pipes 1" through 12" diameters and ductile iron to IPS PE, PVC or steel pipe, 2"-8". 

EZ-W Restraint Couplings

Restraint Plates, Tie Rods and Nuts - For restraining flange to flange pipe.

Restraint Plates, Tie Rods and Nuts