The Blue Housing British Type Worm Drive Hose Clamp is a specific and highly recognizable variant of the standard worm drive clamp, distinguished primarily by its distinctive blue-colored housing (the part that contains the screw mechanism). This design is a classic feature often associated with certain British manufacturers and standards, particularly BS5315, which governs the specifications for such clamps.
Features of BS5315 blue housing worm drive hose clamps
Blue Protective Housing:
Function: The housing is typically made from nylon 6 or a similar high-strength engineering plastic, injection-molded to precisely house the worm screw mechanism.
Purpose of the Color: The bright blue color serves as a visual identifier, making it easy to quickly spot the clamp during assembly, inspection, or maintenance. More importantly, the plastic housing provides electrical insulation, preventing galvanic corrosion between the stainless steel clamp and an aluminium or other dissimilar metal fitting. It also offers mechanical protection for the screw thread from damage and debris.
Worm Drive Mechanism:
The clamp operates on a worm drive principle. A stainless steel worm screw engages with the perforations in the band. Turning the screw with a screwdriver moves the band smoothly to tighten or loosen the clamp.
Performance Advantages:
Vibration Resistance: The worm drive design offers excellent resistance to loosening under vibration.
Corrosion Resistance: The 304 stainless steel construction resrusts corrosion from water, chemicals, and atmospheric exposure.
Dielectric Insulation: The blue nylon housing acts as an insulator, critically preventing galvanic corrosion.
Uniform Sealing: Provides 360-degree sealing pressure around the hose.
Common Applications
Marine and Shipbuilding: The ultimate application. Used on engine raw water cooling systems, fuel lines, bilge pump connections, and deck fittings. Its resistance to saltwater corrosion and the insulating housing are essential here.
Potable Water Systems: The stainless steel and nylon materials are often suitable for use with drinking water.
OEM Automotive and Machinery: Used in engine bays for coolant and hose connections where reliability is paramount.
Food and Beverage Processing: When made with appropriate grade stainless steel, it is used in wash-down environments.
Production workshop of BS5315 hose clamps
