Swivel Joint 536 Series, Aluminium for Loading Arms

Swivel Joint 536 Series is an elbow used as standard on our range of fixed, variable and long reach top loading arms.

EWFM (EW Fuel Management Ltd) is a multi-disciplinary distributor based in Royston near Cambridge, England, supplying equipment for the safe transfer of liquids, gases and particulates.

EWFM Specialise in Swivel Joints, Loading and Unloading Arms, Couplings, Breakaway Couplings, Filling and Emptying Equipment, Hose, Agitators and Mixers, Access Systems, Storage Tank Equipment and Aircraft and Helicopter Equipment for the Oil & Gas, Food and Drink, Chemical, Pharmaceutical, Power Generation and the Defensive and Aviation Industries. At the onset, aircraft refuelling and fuel tanker equipment have been and continue to be a specialty of EWFM in both the defence and civil markets.  From supplying to the aviation and oil and gas industries,  the company has now diversified into other hazardous markets such as pharmaceutical, chemical, food and drink and power generation.

EWFM’s product expertise ensures that customers are recommended the most suitable equipment for their application. Having supplied many thousands of our products, our reputation as a reliable company is known both worldwide and in the UK. Procedures in place ensure that all projects are carried out with utmost professionalism, offering clients support at all stages. Accredited to ISO 9001-2008, we have never received either a major or minor non-conformance after 25 third party audits.

EWFM supply Swivel Joints across a broad range of industries. Originally suppliers to the just the oil, gas and subsea industry. EWFM have now however expanded into the chemical, food, distilling, brewing, petrochemical, mining, drilling and pharmaceutical, with potential to supply in many more. We supply standard, engineered , subsea swivels , compact swivels , high pressure swivels and multiport rotary unions.  EWFM will work with you and find the correct swivel for your requirement. Our joints are an integral part of articulated pipework assemblies; some of these include loading arms and floating suctions which are currently being successfully operated worldwide. Joints relieve stress and torsion on hose or pipe work preventing damage resulting in costly downtime through repair and delays.

Most of our Swivels can be supplied in a range of styles, please see the examples below and specify your requirement with the enquiry.

Available sizes

3″ 4″ 6″

Standard design

Aluminium with Gunmetal Collars

Applications

Top Loading Arms

Applications of Swivel Joints

Swivel joints are used in various industries including

• Chemical and petrochemical industry
• Power plants
• Metal and mining
• Water preparation and municipal technology
• Pharmaceutical industry
• Food and drink industry
• Refining industry
• Test stands
• Cooling water supply and water treatment plants
• Hydraulic systems and pneumatics
• Ink and paint industry
• Brewing and distillation industries
• Automotive industry
• Recycling industry
• Loading equipment
• Aviation and shipbuilding
• Paper and wood industry
• Cryogenic industry
• One of the common uses of swivel joints is in marine loading arms.

Characteristics of Swivel Joints

The main characteristics of swivel joints are:

• They are compact engineered components.
• They provide tight Seals
• They have a protected bearing chamber
• Long-Life Bearings
• Easy Lubrication
• No Field Adjustment is Necessary
• They are rigid, safe, and sustainable
• Swivel joints are available in various sizes starting from 3/4 inches.
• They are usually produced in flanged, threaded, and butt-welded end connections.

Working of a Swivel Joint

Swivel joints are usually made up of two main components; the sleeve and the body. They are locked in place by one or more ball-bearing races. These ball-bearing races keep the body and swivel sleeve properly aligned to allow the swivel to have a rotary motion around its axis. As the two parts of the swivel can rotate, the piping system components connected to the two ends of the swivel will also rotate freely and independently around the swivel’s axis. To have multiple axes of rotation, multiple swivels are installed with different orientations. This allows the system more freedom of movement between the sides of a fluid conveyance system. Different types of lubricants can be used to lubricate the bearing races.

The actual mechanical work is performed by the swivel’s ball bearings. However, the most important part of the swivel joint is the liquid-tight pressure seal that retains the pressurized working fluid. Pressure seals can be made from thermoplastics or elastomers like PRFE, FKM, Kalrez, fluoroelastomer, Chemraz, and nitrile rubber. The properties of these seal material options make them suitable for service with various fluids over a range of operating temperatures.

Types of Swivel Joints

Swivel joints can be categorized based on various parameters as mentioned below:

Depending on the end connection, there are three types of swivel joints

• Flanged swivel joint
• Threaded swivel joint, and
• Welded swivel joint.

Depending on the working component parts, swivel joints can be of three types:

• Compact O-ring swivel joints that use an o-ring for pressure seal.
• V-ring swivel joints that use a triple v-ring packing for sealing. They are robust in construction and suitable for severe applications.
• Split Flange swivel joints that use a separate bearing pack design with an H-ring and two O-rings.

Depending on the flow paths, there are basically three types of swivel joints:

• Straight through swivel joints having coaxial flow path.
• Right-angle swivel joints having outlet ports perpendicular to inlet ports.
• Offset swivel joints are a combination of both of the above designs

Source: www.ewfm.co.uk

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• Swivel Joint 536 Series, Aluminium for loading arms