BS 5315:1991 Certified British Standard Hose Clamps

Product Introduction

Our BS 5315 1991 Hose Clamps represent the gold standard in worm drive hose clips. Specifically designed to meet rigorous British Standards, these clamps provide exceptional sealing security for high-pressure applications. Featuring a pressed thread band and a smooth underside, they ensure maximum hose protection while delivering superior tightening torque.

It is the specific 1991 edition of the British Standard titled "Specification for hose clamps". This standard provides the definitive technical requirements for two primary types of hose clamps used across various industries:

Worm-drive clamps 

clip-style screw band clamps

The "1991" designation is crucial, as it identifies the exact set of specifications and testing criteria that a clamp must meet to be certified under this version of the standard.

W2 British type worm drive hose clamp is one type of BS 5315 1991 hose clamps.

Material:

W1 - All parts carbon steel with zinc plated

Specifications of BS 5315 1991

The standard is highly detailed, ensuring consistency, safety, and performance.

1. Materials and Construction:

Bands: Must be manufactured from a corrosion-resistant material. This is typically stainless steel (such as AISI 304 or 316 grades) for critical applications or carbon steel with a protective electro-zinc plating for general use.

Screws and Housings: Must be made from materials of adequate strength and corrosion resistance, often matching the band material. The screw thread is specified to ensure smooth engagement and reliable tightening.

2. Dimensional Tolerances:

The standard provides precise tables of sizes, specifying the nominal diameter range (e.g., 12-16 mm, 16-20 mm), band width, and band thickness for each clamp size.

These strict tolerances guarantee interchangeability and a correct fit for specific hose diameters.

3. Performance and Testing:

BS 5315:1991 mandates rigorous tests to prove the clamp's integrity:

Tensile Strength Test: The clamp assembly must withstand a specified minimum tensile load without the band breaking or pulling out of the housing.

Pressure Test: The clamp must seal a hose connection without leakage or failure at a defined proof pressure.

Torque Strength Test: The screw and housing must withstand a minimum torque without stripping or breaking, verifying the durability of the drive mechanism.

Corrosion Resistance: For plated clamps, a salt spray (fog) test is often required to validate the effectiveness of the protective coating.

Production workshop of BS 5315 1991 hose clamps

Key Technical Features

• Standard Compliance: Fully manufactured and tested according to BS 5315:1991 requirements.

• High Destruction Torque: Built to withstand higher tightening forces than standard clamps, ensuring a leak-proof seal.

• Kite-Mark Quality: Available with industry-standard markings for traceability and quality assurance.

• Material Versatility: Available in Galvanized Mild Steel, AISI 304, and AISI 316 Stainless Steel.

• Hose Safety: The non-perforated band with flared edges prevents cutting or shearing of the hose wall.

Technical Dimensions

FAQ

Q: What makes BS 5315:1991 clamps different from standard worm drive clamps?

A: BS 5315 clamps undergo more stringent testing for band tensile strength and housing integrity. They are designed for "heavy-duty" industrial environments where safety and leak prevention are critical.

Q: Are these clamps suitable for marine environments?

A: Yes, when ordered in W5 (AISI 316 Stainless Steel) material, our BS 5315 clamps offer maximum resistance to salt-water corrosion and acidic conditions.

Q: Do your BS 5315 clips have the size stamped on the band?

A: Yes, all our British Standard clips are stamped with the size range and BS 5315 mark for easy identification and compliance auditing.