HP Series Safety Clamp & Couplings

Application

HP Series safety clamps are designed for steam and high pressure compressed air and other high pressure or hazardous applications requiring a safety coupling and clamp assembly. This reusable, rugged coupling series can be fitted or re-attached in the field without special equipment.

Widely used in oil refineries, chemical plants and other factories using steam as an essential service. Used for compressed air (especially in larger sizes), in quarrying, mining, pile driving, as well as other service duties. Also used for LPG, grouting, volatile liquids and similar applications.

Working Pressures

Maximum safe working pressures are 3,750 PSI (259 bar) for ½" size, decreasing to 1,000 PSI (69 bar) for 2" size, provided clamps are correctly selected and properly fitted to an appropriate hose.

Warning

These figures are given as a guideline only. Service conditions, hose construction and the manner in which coupling and clamps are fitted will usually be the determining factors.

Steam is a highly dangerous medium and every care should be taken to fit the correct size of safely clamp for the hose in use in order to prevent blow-off. If in doubt, consult an experienced hose distributor.

Threads

BSP or NPT

HP Series Safety Clamps (HPC)

The clamps are reusable and of robust construction. The principal feature is the extended finger, boss or protrusion which is designed to engage behind the annular security collar of the Male or Female coupling. The clamps are interlocking and under-ribbed to provide a secure grip on the hose. The clamps incorporate a 'bolt-shelf' for one handed spanner tightening. Alternative sizes are available to suit hoses of various outside diameters, and each clamp is clearly marked with the hose outside diameter range and part number. Clamps up to ¾" size have two bolts. Larger sizes have four bolts. CLAMPS

CLAMPS MUST BE SELECTED ACCORDING TO HOSE OUTSIDE DIAMETER SIZE.

Modern hoses vary greatly in composition, diameter and thickness. Great care should be taken to ensure the right clamp is fitted whereby the clamp 'finger' overlaps the hose tail collar without meeting the hose tail itself. The clamp halves should also leave a consistent gap when tightened.