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  • Rubber Bellows

    Stourflex rubber bellows are the ideal solution for absorbing noise and vibration from pumps, chillers and other reciprocating equipment. Proven in service for over 30 years the product range is available in variety of elastomers including the popular EPDM and Nitrile. Comprehensive stocks are held for all installation lengths and flange drillings. All products are supported by technical data sheets and installation instructions.
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  • Expansion Joints

    Stourflex Expansion Joints are designed to eliminate the problems associated with thermal expansion and provide a cost effective solution when expansion cannot be accommodated by using the natural inherent flexibility of the pipe. Stourflex expansion bellows are manufacture in accordance with the Expansion Joint Manufacturers Association (EJMA) and are available in both standard stock production or bespoke designs
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  • Pipe Anchors And Guides

    Stourflex pipework anchors & guides are designed to accommodate the forces and provide the restraints to control the movements generated by thermal expansion. They are designed to complement Stourflex expansion joints ensuring the prefect engineered design. With our vast knowledge of expansion Joints and the loads they impose on pipework system we are able to provide a solution that best suits your installation and budget.
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  • Hoses & Pump Connectors

    Stourflex pipework anchors & guides are designed to accommodate the forces and provide the restraints to control the movements generated by thermal expansion. They are designed to complement Stourflex expansion joints ensuring the prefect engineered design. With our vast knowledge of expansion Joints and the loads they impose on pipework system we are able to provide a solution that best suits your installation and budget.
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  • Air & Dirt Separators

    The Stourflex range of Microbubble Air & Dirt Separators is designed to meet the demands of all building services heating and chilled water applications. The range includes the traditional vertically mounted horizontal unit , a unique horizontal high flow (Low Pressure Drop) Stainless Steel unit and Pressure Step Degasser for low pressure chilled water applications
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  • Chemical Dosing Pots

    Stourflex Dosing Pots are designed to provide a controlled and cost effective method of chemical dosing to heating and chilled water systems. Stourflex dosing pots are of a mild steel welded construction and are supplied in a kit of parts to enable the unit to be assembled to best suit site conditions. The unit is supplied complete with tundish, vessel, air vent, inlet, outlet and drain valves and check valves for safety. The range comprises of 3.5, 6, 11, 15, 20 and 25 litre units and are available ex-stock.
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  • Inertia Bases & AV Equipment

    Stourflex Inertia Bases are designed to reduce vibration from pumps and other reciprocating equipment. Inertia bases also reduce motion during start-up and shut-down, lower the centre of gravity and minimise the effect of unequal load distribution. Inertia base frames are specifically engineered to receive poured concrete and designed to suit all leading brands of pump including Grundfos, Wilo & Xylem.
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  • Caesar II Services

    Stourflex offer computer aided design using CAESAR II® Pipe Stress Analysis. The benefits of using computer aided design software enable our engineers to model and evaluate the behaviour of the pipework system. Therefore whether you are designing a new pipework system or assessing an existing one we can produce technical reports showing the forces which are generated by and need to be contained when installing expansion joints. This can significantly assist you in designing your pipework system
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  • Mission Statement

    "Our motivation is to provide solutions to our customer’s challenges. We do this by offering innovative products and outstanding technical support."
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Stourflex COVID – 19 Update

Following the announcement on Monday of the new Lockdown coming into effect, these are Stourflex’s current working practices.

Stourflex are open for business as usual but with added safety procedures to protect both our customers and staff which is our biggest priority, so the following procedures have been put in place.

Opening hours
The sales and accounts department will continue to be open for business from 08:30 to 17:00 Monday to Friday. We have reduced staff on the premises at any given time but all staff will be contactable as usual through our main landline number (01384 393329), direct dials or e-mails. The warehouse are running slightly reduced hours at present, typically 09:00 to 16:00.

Site Visits
Siter visits may still be possible but each visit will be judged by the individual to be undertaking it and senior management. Unfortunately if we do not feel it completely safe we have to postpone it until things improve. However in these situations we can still assist through looking at drawings, viewing photos / videos or by Teams meetings.

Trade Counter
The trade counter will no longer be open and tradesman / customers will no longer be permitted to enter. All deliveries and collections will need to be booked in advance. When attending site social distance must be followed and appropriate PPE must be warn.

Thank you for your continued support through this pandemic. We will keep you informed of any changes as and when they happen.

Technically Advanced Flexible Solutions

Type JP18 Twin Sphere Rubber Bellows Union Ends. 

Type JP19 Single Sphere Rubber Bellows Union Ends.

Specification

Union ended rubber bellows consisting of nylon reinforced body with E.P.D.M. liner and cover fitted with galvanized malleable iron female B.S.P. union ends.

Application

Stourflex union ended rubber bellows are designed to offer a simple method of connecting small bore pumps and air conditioning equipment and are used to reduce noise and vibration. They are suitable for use on chilled water and low pressure heating systems. Maximum working temperature 82°C. Maximum working pressure 10 bar. Stourflex union ended rubber bellows should not be used at their maximum working temperature and pressure respectively. Maximum test pressure = 1.5 x working pressure or 1.5 x end connection rating, whichever the lower.

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Supplied length may vary. Tolerance +/-5% Where vacuum conditions or temperatures and pressures above those stated exist please check with us the suitability of and effects on service life of Stourflex products. For applications where larger sizes of equipment require isolation please refer to the Stourflex range of flanged stainless steel pump connectors and rubber bellows. Stourflex products should be installed in accordance with our fitting instructions. Stourflex union ended rubber bellows should be periodically inspected and replaced if any deterioration is evident.

Installation, Operation and Maintenance Instructions For Single & Twin Sphere Rubber Bellows

Storage

Rubber bellows should be stored in a cool, dark, clean area and be protected from damage caused by other items of plant and equipment. Inspection Rubber bellows should be inspected for internal and external damage prior to installation. Both the rubber bellows sealing surface and the union sealing face should be clean and free from any debris that would prevent a seal or cause damage to the bellows in service.

Selection

Check that the correct rubber bellows has been selected for the operating conditions that exist. Temperature, pressure and movement should all be confirmed as the wrong selection may result in failure of the system.

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Installation

Rubber bellows should be installed at their neutral length and pipework should be true and straight. Adjustments should be made to the pipework if dimensions exceed the movement capabilities of the bellows being installed.

Installation, Operation and Maintenance Instructions For Single & Twin Sphere Rubber Bellows Continued

Installation Continued

The union ends should be removed from the bellows assembly and fitted to the pipework or pump with the correct dimension "BL" left to position the bellows. The unions should then be tightened evenly with care being taken not to rotate the bellows membrane or over tighten the rubber sealing face. Unions should be rechecked after approximately seven days.

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Pressure Test

If a hydraulic pressure test is to be carried out on a system containing rubber bellows ensure that anchors are correctly fitted before the test is carried out. Also ensure that the test pressure ( usually 1.5 x working ) does not exceed the test pressure of the rubber bellows.

Anchoring

Rubber bellows must be anchored to ensure their correct performance.

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Rubber bellows will exert a pressure thrust in service and must be anchored to protect adjacent pipework and equipment. Rubber bellows will extend under pressure and must be anchored to prevent this happening.

Maintenance

When properly installed and used at their correct operating temperature and pressure Single and Twin Sphere rubber bellows will give many years of trouble free service. However rubber bellows should be periodically inspected for signs of deterioration. If insulation is to be used this should be removable to allow inspection to be carried out. Unions should be checked and retightened if required. Rubber bellows should not be painted as this may reduce the bellows service life. If fine hair cracks become evident in the bellows membrane this is a sign that the bellows is nearing the end of its service life and should be replaced at the next convenient opportunity. Rubber bellows are an important part of any heating or chilled water system and consideration should be given to keeping a quantity of spares that would prevent a long term shutdown of the system.

 

Download: Data Sheet and Installation Guide

Tel: 01384 393329

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