Over 70 Years of experience in the manufacturing industry and an. ongoing commitment to quality has positioned Treloar as a market

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2 Over 70 Years of experience in the manufacturing industry and an ongoing commitment to quality has positioned Treloar as a market leader and manufacturer of innovative fluid handling products. Quality, innovation and safety form the basis of the Treloar philosophy Treloar has a long established reputation for producing high quality, innovative and safe Loading Systems for the petroleum and chemical industry. The term 'Loading System' is broad, however, it is generally defined as a collection of Swivel Joints, elbows and pipes accompanied by a balance mechanism that form a flexible self supporting Arm which facilitates the safe transfer of hazardous, flammable or valuable liquid products. The definition itself implies the potential diversity in the design of Loading Systems. Treloar work closely with clients to custom design Loading Systems that best suit their particular applications. Loading Arms range in diameter from mm (2 4 ), while Submerged Service Arms (Floating Suctions) range from mm (2 9 ). Loading Arms can be constructed from carbon steel, stainless steel, aluminium, or a combination of these materials. Other materials and sizes are also available for specialised applications. Loading Arms can be either manually operated by one person or remotely controlled by means of pneumatic or hydraulic actuators. As industries are becoming more aware and responsive to environmental issues, Treloar Loading Systems can offer an environmentally sound solution to the extremely critical process of transferring hazardous products from bulk storage tanks to road or rail vehicles. Treloar is committed to the philosophy of Quality Assurance and is certified to ISO9002. Quality procedures are in place to manage the manufacturing process from initial design to final inspection, testing and packing. Treloar also maintains high quality welding standards that comply with AS4041 or ASME B31.3. State of the art CAD (Computer Aided Design) systems are used, together with our substantial knowledge and experience to optimise our Loader designs. All Loaders are hydrostatically tested to ensure they meet our stringent quality standards. The company offers in-depth technical assistance, our sales representatives are highly trained and will co-ordinate each stage involved in solving a clients transfer problems. This personalised and professional service extends beyond the point of sale, ensuring ongoing customer satisfaction. A Loading Arm can be used where a flexible hose is utilised to transfer liquid. There are several significant advantages in using Loading Systems in place of flexible hoses: A Loading System is fully self supporting and balanced to allow the operator to easily position the Arm. The need to lift heavy and cumbersome hoses is eliminated, thus providing greater safety for the operator. Faster transfer rates can be achieved with larger diameter loading systems, which are impractical with hoses. Loading Systems offer a controlled sequence of motion, which is both predictable and reliable. It is perfectly suited when full automation of the loading/unloading process is required. The unpredictable nature of hoses are generally considered unsuitable for such applications. Treloar has supplied Loading Systems that encompass an extensive range of applications, spanning from the petrochemical to the dairy industry. This catalogue shows the more common styles of Loading Arms used in industry today and is intended as a sample of the large number of configurations that are possible. Flexible hose failure, will result in the complete replacement of the hose assembly, whereas, a Loading System only requires a simple seal replacement. 2

3 TOP LOADING As the name suggests, top loading involves the transfer of product from bulk storage tanks to road or rail vehicles via top mounted hatches or fittings. Commonly used in splash fill applications where the hatch opening serves both as an entry and a free vent. This form of loading is generally recommended for non flammable products. As environmental regulations become more stringent, top loading has become the domain of chemical loading facilities where potential product loss from bottom entry fittings cannot be tolerated. Single Arm, Fixed Reach E series (with valve) J series (without valve) This arm incorporates only three swivel joints and is designed for use in top loading installations where the vehicle is located at a fixed distance from the riser pipe. Two swivels at the inlet permit both vertical and lateral movement of the assembly and the third swivel allows the drop pipe to remain vertical at all operating angles. Primarily used to load and unload rail cars through open domes in installations where the cars can be accurately spotted, the single arm configuration can also be used for tank truck applications. Some allowance for misspotting is possible with the single arm and increases as the diameter of the hatch opening increases. BOTTOM LOADING Standard practice for filling petroleum tank trucks in Australia, bottom loading creates less turbulence while fitting, thus reducing the danger of generating static electricity. Bottom loading not only reduces vapours which can be an environmental hazard, this system can also be easily adapted to fully recover vapours displaced during loading. Speed is a key advantage of bottom loading because tanks can be filled faster and a number of compartments can be loaded simultaneously. While safety and simplicity are also an important feature of bottom loading facilities. Unsupported boom type bottom loader G Series Designed to provide flexible long range operation without the use of hose, this heavy duty configuration is both reliable and easy to use. A minimum of five swivel joints offer complete flexibility in making tight connections for loading and unloading rail cars and tank trucks, and servicing aviation refuelers. The outboard swivel and arm adjusts for any changes in elevation or tilting that may result as the vehicle is loaded or unloaded. Many variations of this arm are possible and can be equipped with dry disconnect couplers, unions, quick couplings, or other customer specified end fittings to make connections on the side, at the rear, or underneath the vehicle. The intermediate swivel is often inverted to achieve the low profile and clearances needed to connect to the underside of a rail car. 3

4 TOP LOADING Scissor Arm C series (with valve) H series (without valve) Extremely versatile, this arm is designed specifically for top loading installations where a variable operating range is required. The secondary arm rotates 360 in the horizontal plane, providing spotting allowance of up to twice its length. Commonly used to handle high flow rates and withstand rough usage in tank truck loading applications, the scissor arm is also an excellent choice for rail car loading installations where cars are frequently mis-spotted. Generally balanced with the secondary arm fully extended, the arm will automatically rise as the secondary arm is rotated 180 to the parked position as shown in the illustration. BOTTOM LOADING A Frame Arm M Series ML Series (LPG applications) The A frame is one of the more popular loading arm configurations. It provides good flexibility, long reach and is convenient and easy to use. Like the unsupported boom type, it adjusts for any changes in the elevation or tilting of the vehicle during loading. The arm stores neatly in an upright, near vertical position, allowing it to swing around easily for loading from either side of the island. The A-frame's compact storage envelope also allows these arms to be installed relatively close together, often on risers that are approximately the same height as the vehicle connection. They can also be mounted next to one another on staggered risers to achieve arm cross-over for simultaneous loading of multiple compartment trucks. Welded assemblies in steel and stainless steel with ANSI 300 inlet flange and seamless piping are suitable for handling liquified petroleum gases (LPG) including propane and butane. 4

5 TOP LOADING Supported Boom Arm B Series The supported boom arm provides dependable, low maintenance service in high usage installations. Due to the boom mounted design, no heavy loads are placed on the inlet swivel, thus minimising wear. The supported boom arm consists of a fixed reach loader mounted on a swivelling boom that is attached to a permanent structure via a pillow block bearing for added strength and support. This configuration provides maximum flexibility for misspotting and longer reaches from the loading rack to the tank truck or rail car. Both the boom and the arm can be folded back against the rack for convenient, compact storage, away from the traffic flow. A variety of boom designs and configurations are available to meet the needs of virtually any installation. BOTTOM LOADING Short/long range hose loader SRH Series (short range) LRH Series (long range) Generally recognised as the industry standard design for bottom loading of petroleum tank trucks, the RH series arms offer full cross-over capabilities that conform to the API CP 6 code of practice, loading envelope. This design provides a simple yet efficient means of simultaneously coupling to multi compartment tank trucks. Commonly installed as a set of four or six arms with lateral spacing of 600mm and vertical spacing of 400mm for torsion spring balance units or 550mm for gas spring balance units. The arms are constructed from steel and aluminium with a 1.9m long stainless steel braided drop hose. Varying length aluminium spool pieces fitted between the hose and the apex swivel allow the arms to be mounted on staggered riser pipes. The RH series arms are normally constructed from 100NB pipe that terminate with an API coupler, although, other sizes are available for special applications. 5

6 TOP LOADING Unsupported Boom Arm GT Series This popular style loader is designed for those installations where it is undersirable or impractical to mount a supported Boom Arm. For example, many rail car sites have no support columns or overhead structures to which a supported Boom can be attached. The unsupported Boom offers the same advantages as the supported Boom Arm, but maximum reaches are generally somewhat less. When necessary, total reach can be extended by increasing the size of the base Swivel Joint. The unsupported Boom Arm is an excellent alternative to the Scissor Arm for variable reach applications, especially in larger sizes where the outboard components are relatively heavy. BOTTOM LOADING LPG Loader Set GL Series Designed specifically for loading and unloading LPG and Ammonia, the GL series offer all the features and benefits of the unsupported boom type bottom loader. Some of the key design features of this arm can be found in the end fittings. The arm itself terminates with an ANSI 300 flange which in turn is connected to an isolation valve, breakaway and an ACME coupling. A small spring return ball valve is also connected to a side port in the breakaway which then connects to a flexible vent line that runs parallel to the loading arm. This vent valve ensures that when the main isolation valve is closed and the arm is ready for disconnection from the tank truck, the small volume down stream of the isolation valve can be fully depressurised before the ACME coupling is released. The end fittings are balanced separately by means of gas springs which allows the operator to easily position, connect or disconnect the arm as required. 6

7 SUBMERGED SERVICE APPLICATIONS Treloar provides a complete range of submerged service loading systems that fall into three broad categories: I) Floating Suctions These assemblies are designed for use in storage tanks where little or no contamination can be tolerated, such as aircraft jet fuel. Since the fuel near the top of the tank is least likely to contain water or foreign particles, these assemblies float near the top and draw from the uncontaminated fuel. Submerged service Swivel Joints used in Floating Suctions contain additional o-rings to retain the lubricating oil present in the ball race and also to prevent potential contamination of the fuel. Generally constructed from aluminium, Floating Suction configurations vary with tank geometry. Other materials of construction are available for special applications. II) Floating Roof Drains Liquids that have a low vapour pressure will evaporate rapidly. To minimise this effect, a travelling roof that floats on the surface of the liquid maintaining a constant volume vapour space, is utilised. This, however, raises another issue. How do you remove the excess water bought on by the rain and condensation? The solution is to install a floating roof drain, which is a series of collapsible pipes connected by submerged service swivels that funnel the excess water from a central drain point in the roof. No additional flotation devices are required as the buoyancy force generated by the roof will support the weight of the roof drain. The number of swivels used on a roof drain depends on whether the floating roof is constrained by guides and cannot rotate or if it is free to rotate. 7

8 SUBMERGED SERVICE APPLICATIONS III) Floating Skimmer In instances where the contaminants are lighter than the product and float on the surface, a Floating Skimmer is required to remove the contaminants. These assemblies consist of a skimmer tray and adjustable floats connected together by pipe and submerged service swivels. When the difference in specific gravity between the product and the contaminants is small, the flotation devices can be adjusted such that the skimmer tray remains at the desired level. Primarily used in applications where the product specific gravity is similar to, or greater than that of water. Floating Skimmers offer a simple yet highly effective means of continually removing surface contamination. SWIVELS The Swivel Joint is considered the key component of a Loading System. It provides the flexibility for the rigid pipes while maintaining a positive seal throughout its operating envelope. Treloar Swivels fall into two categories, standard and split flange. The standard Swivel contains a double ball race which is machined to precise tolerances while an o-ring sealing element contains the product within. For more heavy duty applications the split flange Swivel offers a greater moment load carrying capacity. A unique feature of this Swivel is that the seal can be replaced without removing the ball bearings. The split flange Swivel was designed with a single or double ball race option and can be internally lined to handle extremely aggressive chemicals. With the appropriate combination of Swivels and Elbows, multiple planes of rotation can be achieved to provide the necessary flexibility for a given application. Standard Cast Split Flange Standard Fabricated 8

9 BALANCE MECHANISMS While Swivel Joints provide the flexibility, the Balance Mechanism provides the ergonomic support for the operator. It ensures that vertical movement can be easily achieved without imparting excessive loads to the operator. Treloar offers a comprehensive range of Balance Mechanisms that will suit almost any application. Counterweight Balance (CWB) The simplest of all Balance Mechanisms, Counterweights offer a perfectly balanced system through the full range of motion of the Loading Arm. Unlike other mechanisms, Counterweights do not have a neutral balance point and will remain in any position without returning to a neutral position. The Counterweight Balance, however, requires a larger space behind the Loading Arm for both lateral swing and vertical movement. Torsion Spring Balance (TSB) One of the most common balance units used in Loading Systems, the Torsion Spring Balance is compact in design and robust in construction. The unit consists of a Torsion Spring made from high tension alloy steel with excellent fatigue resistant properties that winds tight as the arm is lowered, thus providing a counter torque which balances the arm. Four different size Torsion Spring assemblies with progressively larger lifting capacities are available. Compression Spring Balance (CSB) This Balance Mechanism comprises of a long Compression Spring encased in a square section tube that compresses as the arm is lowered. This unique patented adjusting mechanism is what sets this balance unit apart from the other compression balance mechanism. Located outside the spring casing, the twin adjusting screw mechanism allows the operator to control both spring tension and the effective lever arm with standard tools. The combined adjustment of these two parameters result in a precisely balanced system. Suitable for applications with limited space and varying load conditions that require regular adjustment of the balance unit. Gas Spring Balance (GSB) Supported by Twin Gas Pressurised Springs for added safety, this balance unit has a low spring rate that maintains an almost constant force throughout its range of motion. A simple screw adjustment changes the effective lever arm to suit the prevailing load conditions. Ideally suited for applications where only a limited vertical movement is required while the surrounding temperature remains relatively stable. Temperature variations influence the thrust force of the gas spring by approximately 0.4% per 1 C. GSB CSB TSB CWB Clearly one must carefully consider all the features, benefits and limitations of the Balance Mechanisms before selection. However, for more specialised applications, pneumatic or hydraulic cylinders maybe used in conjunction with balance units such as CWB and CSB to remotely actuate the arm or function as a hold-down device. They can also be used independently to both balance and actuate robotic loading systems. 9

10 CUSTOM APPLICATIONS For highly specialised applications, Treloar offers custom engineered Loading Systems that meet the needs of our clients. Some examples of these specialised applications are as follows: Vapour Recovery A set of parallel arms that loads the product and recover the displaced vapour simultaneously. Either a hatch plug or vapour shield may be used as the end connection. Steam Traced/Jacketed Arms that carry heated product such as bitumen (ashphalt) require steam tracing or jacketing to maintain flow through the arm. Gravity Return Primarily used on counterweight arms, the gravity return feature allows the arm to return to the parked position automatically once loading is completed. By-Pass Arms When Swivel Joints are not suited to a particular application such as the transfer of food grade fluids, a bypass loader forms an external skeleton that supports the primary product hose. Robotic Arms Pneumatic or hydraulic actuators can be attached to loading arms to achieve full automated motion. Ideally suited for remote control applications. Marine Loading Arms For ship to shore product transfer where high flow rates require large diameter pipe, Marine Loaders provide an efficient means of bulk product transfer. Ranging in diameter from 100mm (4 ) to 600mm (24 ), the Marine Loaders are designed to maximise safety and minimise pollution as they are primarily used in environmentally fragile areas. By-Pass Arm 200NB Acid Loader 500NB Marine Loader Vapour Recovery/Robotic Arm 10

11 OPTIONS Sensory Interlocks Proximity sensors placed in strategic locations enable a Loading System to be fully interlocked with its surroundings. This feature can greatly enhance both safety and efficiency. Pneumatic/Hydraulic Articulation In instances where access is limited or loads too great for a standard balance mechanism, pneumatic or hydraulic actuators can be used to manoeuvre and position a Loading Arm either remotely or via a control lever on the Arm itself. ACCESSORIES Safety Breakaway Couplings When the potential risk of a driveaway exist, a Safety Breakaway Coupling provides the necessary weak link in a Loading System. This ensures the safe separation between the Loading Arm and bulk transport vehicle and stops product flow. Kamvalok Prevents spillage from both routine and accidental disconnects. A unique, built-in Valve in the Coupler and a spring loaded poppet in the mating Adaptor automatically close when disconnected. The cam and groove design allows for fast, easy and reliable connection and disconnection in any orientation. 11

12 ACCESSORIES API Dry Disconnect Coupler Designed to couple to a standard 100mm API profile Adaptor, this heavy duty Coupler provides a quick and dependable means of connection to tank trucks in bottom loading applications. Ergonomic design complete with an aluminium and stainless steel construction, allows this Coupler to stand up to tough use. Loading Valve This deadman type Valve is designed to minimise the effects of line shock. The closure rate is adjustable and can be easily regulated to fit the users need. A remote control operating lever can also be fitted, so that the Valve maybe operated downstream from its fixed position. Folding Stairs The Folding Stairs allow safe and reliable access onto tanker tops, rail cars or any variable height platform the operator may wish to reach. The unique parallelogram geometry maintains level steps at any angle of operation. Constructed from steel, the Folding Stair units offer a compact and sturdy solution to any access requirements. Overfill Protection Nearly all top loading systems can be equipped with an automatic shut off feature to help prevent spillage and overfills that can result with manual operation. Both electrically and pneumatically operated shut off systems are available which allow an operator to reliably load with more than one Arm at a time. Vacuum Breakers When complete drainage is required in a Loading Arm, a Vacuum Breaker permits the quick release of product. Normally mounted on a Loading Valve, or on the highest point that retains product, the 15mm ( 1 / 2 ) brass Vacuum Breaker relieves any vacuum greater than 8.6 kpa (1.2psi). Deflectors Product Deflectors mounted on the end of loader drop pipes negate the thrust generated by high flow rates, avoid high velocity impingement on the bottom of the tank, and prevent static build up and foaming. When used in Floating Suctions, the generation of unwanted vortices at the inlet is prevented. Group Limited Gardiner Street Rutherford NSW 2320 AUSTRALIA Tel Fax trelcust@treloar.com.au Designs shown in this catalogue are subject to change without notice. 12