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APPLICATION

Hoses are very versatile as a small diameter flexible connections to equipment such a Fan Coils, VAV Boxes, small pumps, Chilled Ceilings, Chilled Beams or to absorb small amounts of thermal movement in branched pipe work and radiator connections. Not only do they absorb noise and vibration and movement but the can also greatly reduce fitting times. Hoses perform reliably that the correct type of hose is used for the service conditions and that it is properly installed. There are many different hoses on the market. Materials of construction can be rubber, plastic, PTFE or stainless steel. Some are reinforced and some are braided. Most common types of end connector can be used as termination. EA offer two basic types of hose, stainless steel convoluted and smooth bore unreinforced rubber with stainless steel wire braid. These cover all possible building services applications. All EA hoses have been specifically developed and tested for their application. Please note: BSRIA, HMSA hydraulic hoses are unsuitable for flowing water services.

RUBBER

The rubber hose shown in the following data sheets consist of an unreinforced EPDM rubber liner with a stainless steel braid. All end connections are brass nickel plated which are swaged utilising stainless steel ferrules. This entirely non ferrous construction makes the hoses suitable for both heating and chilled water service. The rubber liner is at least 3mm thick to prevent kinking when bent. The EA82 hose's reliability has been proven over many years with over 1/2 a million installed. EA rubber hoses have bean tested by BSRIA to the standard of the HMSA (Hose Manufacturers and Suppliers Association) (Certificate Ref: BG41 2004). EA rubber hoses come with a 10 year manufacturers warranty.

STAINLESS STEEL

Stainless steel convoluted hoses are all welded alternatively for applications where rubber is not suitable or where 100% reliability over a long period of time is required. Stainless steel braided hoses can withstand very high temperatures and pressures and still offer a good degree of flexibility (see EA71 & EA73.)

SPECIAL APPLICATIONS - FAN COILS

Hoses as final connections to fan coils can save a great deal in fitting time. If the fittings are correctly selected, they can also be used to form a bypass loop during pressure testing and flushing to protect the fan coil. During service they will prevent noise transmission and can compensate for pipe work expansion.

CHILLED CEILINGS

Hoses are very useful in connecting chilled ceiling panels. when fitted with a special Push fit connector, ceiling panels can be coupled with the minimum of force.

EXPANSION

In certain applications hoses can be used to absorb small amounts of expansion e.g. riser branches. the pipe size should be less that 50mm NB.

SETTLEMENT

Hoses can also be used to compensate for building settlement. Larger sizes are permissible as the movement is only a one off.

INSTALLATION

All hoses should be fitted in line with the HMSA 'Code of Practice'. A copy is available from EA or FETA.

Applications

Data Sheets

Standard Specifications

O&M Instructions