Piping Technology & Products’ constant support hangers are principally used to support pipes and equipment subjected to vertical movement due to thermal expansion at locations where the transfer of stress to other supports or equipment can be critical. • L – See side view of PTP 100-D Constant Spring Supports • CH – Size of channel, Download PTP 100-U Constant Spring Support PDF. LOAD ADJUSTMENT The simplified construction, together with the compression spring working in conjunction with a bell crank lever, achieves a mathematically perfect counter-balancing of spring and load moments about the main pivot point. Step 2: Determine Total Travel: the total travel is the vertical design travel plus the recommended over travel rounded up to the nearest ½ inch. Load variations resulting from this are limited through the stress analysis calculations, depending on the sensitivity of … The base plate is bolted directly to the top of the steel or floor. PTP figure 100 type F (Layout-B) is a vertical constant designed to support piping from below. Our constant supports/hangers are manufactured mainly in horizontal and vertical models. • WT – Maximum weight for the load range, Download PTP 100-G Constant Spring Support PDF. Piping Technology & Products’ constant spring hanger, usually referred to as a constant, provides constant support force for pipes and equipment subjected to vertical movement due to thermal expansion at locations where maintaining a constant stress is critical. Pre-relaxed springs eliminate any significant loss of load-bearing capacity. Screw Threads are ISO-metric coarse pitch series (6mm pitch series above size M64). The travel stop pin must be moved to the center of its hole by adjusting the hanger load. Example         Figure = 200       Type = C        Load = 2,356 lb. If the variation exceeds 25%, a constant support hanger should be used. • WT – Maximum weight for the load range, Download PTP 100-F Constant Spring Support PDF, Layout -A Shown | For Layout-B, scroll down Constant Spring Supports Piping Technology & Products’ constant spring hanger , usually referred to as a constant, provides constant support force for pipes and equipment subjected to vertical movement due to thermal expansion at locations where maintaining a constant stress is critical. Using the turnbuckles, level the pair of channels connecting the two constants. PTP figure 100 type E (Layout-A) is a vertical constant with a base plate which is bolted directly to the top of the steel. The load each constant carries must include half of the assembly’s weight as the whole assembly moves. The rod take out (RTO) given in the tables below are minimum and may not exceed the depth of the supporting steel. Fig. Covered spring provides protection and good appearance. Fig. Fig. The over travel is a safety margin to allow for the discrepancy between the calculated and actual travel. It is important to understand that this constant has axial movement subjected by the vertical movement and angle rotation (D – E). If this is the case then each constant could be a different size and the tables below might not apply. 6. Piping Technology & Products’ constant spring hanger, usually referred to as a constant, provides constant support force for pipes and equipment subjected to vertical movement due to thermal expansion at locations where maintaining a constant stress is critical. This is vertical for Figure 100, and horizontal for Figure 200. Cold and hot loads shall be the same. The Load Adjustment Scale is located on the spring can, near the adjustment nut. 1. • L – Maximum for the load range Anchorage Constant Spring Supports are designed to allow the supported pipework to expand vertically upwards or downwards, whilst maintaining a constant supporting effort throughout the travel range. 1400 Pipe Shoe Solution for Vibration in Piping, Case Study: Engineered Support for Vibration problem, Piping Alignment and Pipe Strain Solutions, Customization Addendum for Spring Supports, Spring Support Sizing & Pipe Stress Analysis, Engineered Spring Supports – General Information, Variable Spring Supports vs. • TO – Take out for up travel • D – Minimum for up travel Please call for dimensions on such special designs. For all constant spring supports there is no difference in load and the supported load will … • TO – Take out for up travel Figure PTP 200-E is a horizontal constant with base plates which are bolted directly to the top of the steel as shown above. The key to selecting a constant support style would be the space available for that support above, below and around the piping (see below). If required, hydro testing should be done at this time. With a J-Rod of 3/4” and a load of 2,356 lb. Constant Spring Supports, Constant Spring Supports Suppliers Directory - Find variety Constant Spring Supports Suppliers, Manufacturers, Companies from around the World at gas spring ,pocket spring ,spring mattress, Springs White: installation (COLD) position Special Design Features. Constant Spring Supports. The force is made constant by a counterbalancing spring assembly. Figure PTP 100-G assembly consists of two inverted vertical constants attached with a channel as shown above. For load and travel not in the tables, PLEASE CALL FOR DIMENSIONS. 3. If not, refer to Figure 5. • F – Maximum length for the load range Actual Travel = 3.35” ORDERING: Specify figure number, size, type, load, actual travel, total travel, direction of travel, and C-C dimension. Types that support piping from below would be types (F and U). Few important points to keep in mind while Spring selection. Spring hangers and spring supports are used to balance slight vertical displacements in the pipe system. The rod take out (RTO) given in the tables below are maximum and made to not reach the supporting steel. The maximum recommended variation according to MSS standard from the operating load is 25% for variable spring hangers. hbspt.forms.create({ It is important to understand that this constant has vertical movement subjected by the total travel and an axial movement (E – D) due to the angle of rotation. Constant Spring & Hangers are used in critical pipelines and also at locations where it is necessary to avoid any transfer of force or stress. • WT – Maximum weight for the load range, Download PTP 200-F Constant Spring Support PDF. The travel stop pin must be engaged before load adjustment is performed. The base plate is bolted directly to the top of the steel or floor. It can be furnished with single lug suspension or double lug suspension as shown above. The Pipe Stress model determines how the piping can be designed to move and avoid placing under stress on the nozzles to equipment and the piping itself. Figure PTP 200-F is a horizontal constant designed to support piping from below. Load adjustment in the field is discouraged as it may significantly change the system. If this is the case, to clear the depth of the supporting steel, the rod take out (RTO) can be specified to exceed the minimum. For a given total travel on the top row of the constant load table, select the operating load on the high side under the column. Once the load is transferred, the travel stop must be removed. on the high side (the other load of 2,277 lb. It can be furnished either with single rod suspension or double rod suspension as shown above. Loosen the travel stop nuts below the angles to allow the load flange to rise up to the installed height: 3/8″ max. The whole assembly moves through the total travel. PTP 200 – D-Constant Spring If not, adjust the load until they are.Do not drive them out. The hanger rod and loading arm of the constant should be unobstructed. • M – Maximum height for the load range Constant springs are used to support piping whose movements and/or loading conditions cause too great a variability or too high of a loading condition for a variable spring. Download PTP 200-C Constant Spring Support PDF. If not, adjust with the turnbuckles. PTP 100 – G-Constant Spring • RTO – Rod take out for down travel Quality inspection and machine tests are also applied for ensuring its robust construction and high … • RTO – Rod take out for down travel PTP 200 – U-Constant Spring, Travel 1-1/2″ – 7-1/2″ PTP 100 – A-Constant Spring Remove the travel stops. Thus, the total travel is 4 1/2” rounded to the upper 1/2”. Important Notes: ALL DIMENSIONS ARE IN INCHES UNLESS OTHERWISE NOTED. Important Notes: ALL DIMENSIONS ARE IN INCHES UNLESS OTHERWISE NOTED. • D – Minimum for up travel Another issue that comes up from many customers is the need to replace spring supports for which the load information has been lost. If axial movement cannot be tolerated, then a PTP figure 100 type U (vertical upthrust constant) would be appropriate for the application. This constant supports vertical movement subjected by the total travel and no axial or lateral movement from its load flange unless a slide plate is added. PTP 100 – D-Constant Spring • RTO – Rod take out for down travel increasing or decreasing the load by 10% does not affect the total travel. • F – Maximum length for the load range Every constant spring hanger is calibrated in the factory and set to the load specified on the name plate (Figure B). Below are sketches of one direction vertical travel: Below is a sketch of dual direction vertical travel: 1. Figure PTP 200-A is a horizontal constant suspended from a beam. Methods of Protecting against Corrosion All constants are shipped with at least 3 color-coded rivets (red, white and blue). }); PT&P has set up it's manufacturing to offer an unparalleled set of customization options with minimal impact on delivery timeframes. The cam is designed such that the distances from the main pivot changes to compensate for the variable resistance during compression of the coil. Important Notes: ALL DIMENSIONS ARE IN INCHES UNLESS OTHERWISE NOTED. • WT – Maximum weight for the load range, Download PTP 200-U Constant Spring Support PDF. This avoids additional loading’s at the component connections to the pipework. The MSS standard provides for a tolerance of 6% in the constant load through the travel range. PTP 100 – B-Constant Spring If this is the case, to clear the depth of the supporting steel, the rod take out (RTO) can be specified to exceed the minimum. Given an actual travel of 7.10”, which is over 5”, the amount of over travel is 1.42”. • E – J-Rod position for up travel The sizing of a constant is independent and not related to its dimensions. Fig. Figure PTP 200-D is a horizontal constant with top attachment which is bolted directly to the bottom of the steel as shown above. The spring supports provides continuous support during expansion or contraction of the pipe. Thus, a 2000-pound hanger can be adjusted for loads from 1800 to 2200 pounds. Fig. • F – Maximum length for the load range Figure PTP 200-C is a horizontal constant suspended from a beam. Note that if the pipe line is not centered in the C-C dimension, then one constant in the assembly will carry a heavier load than the other. Important Notes: ALL DIMENSIONS ARE IN INCHES UNLESS OTHERWISE NOTED. In this system, the external load remains uniform while the moment around its fixed pivot point varies during displacement (due to changes in moment arm length). 5. • E – J-Rod position for up travel For load and travel not in the tables, please call for dimensions. Type G Constant English Sourcing Solutions Services & Membership Help & Community Ready to Ship Trade Shows Get … Quality Pipe Supports (QPS) Ltd. If axial movement cannot be tolerated, then a Figure PTP 200-U horizontal upthrust constant would be appropriate for the application which only allows for vertical movement. Important Notes: ALL DIMENSIONS ARE IN INCHES UNLESS OTHERWISE NOTED. We can quote directly from the stress analysis. Travel stops are installed in all constants before shipping. In addition to our standard (hot-dipped galvanized, neoprene lined springs) constant spring supports, we can customize any material, finish, dimension, load, load adjustment, travel, travel stops, as well as providing sensors for remote monitoring. • L – Maximum for the load range • TO – Take out for up travel 8. PHYSICAL DIMENSIONS OF CONSTANTS The PT&P Nano-ConstantTM is the world’s smallest constant by a wide margin. The design, using a compression spring, a lever, and a spring tension rod, creates a moment counterbalancing about the main pivot pin. • D – J-Rod position for down travel portalId: "88145", It can be furnished with single lug suspension or double lug suspension as shown above. For a total travel of 9” on the top row of the constant load table with a load of 2,413 lb. 9. The rod take out (RTO) given in the tables below are minimum and may not exceed the depth of the supporting steel. However, to provide for situations where the supported load is different from the calculated load, the constant spring hangers are equipped with load adjustment capability. Travel 8″ – 14″ 4. Spring Supports sizing is determined by a Pipe Stress Model which assesses the thermal growth and associated stress on the piping, nozzles, etc. • D – Minimum height The rod take out (RTO) can be specified to exceed the maximum. • WT – Maximum weight for the load range. Constant Spring hanger- Load remains constant throughout its operating range. Attach load rods to the structural support. Loosen the main nut, then retighten the lock nut. constant load spring supports The Constant Load Spring Supports (Constant Supports) provide a constant supporting force through the total travel of the support. ORDERING: Specify figure number, size, type, load, actual travel, total travel and direction of travel. Total Travel = 5 1/2” UP J-rod swings at least 4° from vertical. This picture below shows the Nano-Constant featured in our launch which supported 765 lb. • E – J-Rod position for up travel Download PTP 100-A Constant Spring Support PDF. Important Notes: ALL DIMENSIONS ARE IN INCHES UNLESS OTHERWISE NOTED. Fig. The load adjustment capability consists of a load adjustment scale which is used to increase (Figure A) or decrease (Figure C) the load up to 10%. Fig. Total Travel = Actual Travel + Over Travel. • F – Maximum length for the load range If pin cannot be easily removed after struts adjustment, do not drive pin out. To get the proper dimensions, figure (100 or 200), type (A, B, C, D, E, F, G, U), load, total travel, and direction of travel are required. Example 2          Load = 2,400 lb. Fig. To decrease the cold setting be sure that the travel stoop pin is in place. In either case, the load must be adjusted so that the travel stop is easily removed. of load and 4″ of movement in an 8″ x 10″ x 29″ envelope. The spring support basically employs a spring element, which can get compressed or stretch-out depending upon the thermal movement of pipe and the corresponding loads. Inspection and Maintenance of Supports Backed with rich industry experience, we do design, engineering , manufacturing, testing of Constant Spring Hanger and Supports to our clients. They should be easily removed. Adjusting the load to higher or lower load from the load specified on the nameplate using load adjustment is approximate and not recommended. 8. Constant Spring Support - Find RFQ detail Constant Spring Hanger, Pipe Clamps from United Kingdom Figure PTP 200-B is a horizontal constant suspended from a beam. Our constant hangers and constant supports offer the user a large number of special benefits: Principle-based constancy by way of a special mode of operation. Our products are … The travel stop pin must be engaged before load adjustment is performed. Constants use a spring coil (or series of coils) to accommodate pipe movement from the initial (installed) condition to the final (operating) condition of the piping system. For load and travel not in the tables, please call for dimensions. Constant Spring Support And Hanger, Constant Spring Support And Hanger Suppliers Directory - Find variety Constant Spring Support And Hanger Suppliers, Manufacturers, Companies from around the World at truck spring hanger ,spring hanger ,trailer spring hanger, Springs. Download  PTP 200-D Constant Spring Support PDF. Spring coils are supplied plastic-coated as standard. For load and travel not in the tables, please call for dimensions. This constant supports vertical movement subjected by the total travel and no axial or lateral movement from its load flange unless a slide plate is added. The load is suspended from one of these arms, and a spring is attached to the other. 7. • M – Maximum height for the load range 1.0 TECHNICAL DESCRIPTION 1.1 DESIGN DETAILS The Constant Spring Support designed and manufactured by Carpenter & Paterson Ltd incorporates the latest design concepts, resulting in a constant support effort through the total travel of the unit. Fig. As with variable springs, Type refers to the connection of the constant to the structure and the pipe. b) For actual travel of 5 inches and over, the over travel is 20% of the actual travel. PTP 100 – C-Constant Spring Example 1           Load = 2,400 lb. • TO – Take out for up travel The Constant Spring Supports is known for their longer shelf life. Constant Spring Effort Pipe Support picture from SHANDONG JIANENG TECHNOLOGY CO., LTD. view photo of Spring Support, Constant Effort, Spring Hanger.Contact China Suppliers for … which falls in the load range of 766 – 2402, the Rod Take Out (RTO) for up travel is 21 11/16 (15 11/16 + 6, for up travel according to the note at the bottom of the table) and all other physical dimensions are given in the same row. SIZING CONSTANTS (Examples) See note below on travel key removal. Download PTP 100-D Constant Spring Support PDF. Bottom Mounted Constant Spring Supports. Support the pipe at the desired elevation. The load adjustment capability consists of a load adjustment scale and indicator, which are used to increase (Figure 10A) or decrease (Figure 10C), the load by 10%. • E – J-Rod position for up travel From the Figure 200 Type-C list of tables (see Page 81), the J-Rod and Lug Selection table for a load of 2,356 lb. Non-resonant to all vertical vibrations. Constant load takes place through its range by a perfect counter balance crank lever where load and spring movements through the pivot ensure the minimum kinetic variation. The geometric design of the constant support provides a mathematically constant amount of force exerted throughout the entire range of travel. Constants use a spring coil (or series of coils) to accommodate pipe movement from the initial (installed) condition to the final (operating) condition of the piping system. Having the total travel and load, the constants are sized per the constant load table. The amount of over travel is determined by the method outlined below: is the low side) gives a constant size of 34 in the first column. Types that support piping from above would be types (A, B, C, D, E, and G), as in the above examples. Range . Download PTP 100-E Constant Spring Support PDF, Layout -A Shown | For Layout-B, scroll down. – Weigh the Piping to determine the load and estimate movement from existing spring support • RTO – Rod take out for down travel 1. • D – J Rod position for down travel Figure PTP 100-D is a vertical constant with a top attachment which is bolted directly to the bottom of the steel as shown above. Types of Constant Effort Supports. Constant Spring Hangers are also used where load variation over 6% is not permitted, even if the vertical movement is not large. Constant Springs Installation & Maintenance Guide. Constant spring support is specially used to accommodate constant effort load, excessive movement of the pipeline due to high temperature and pressure of thermal movement. Customers can avail these Constant Spring Supports in different sizes and specifications. PTP figure 100 type E (Layout-B) is a vertical constant with a base plate which is bolted directly to the top of the steel. Fig. *Drawing shown for down travel • E – J Rod position for up travel PTP 200 – C-Constant Spring • E – Maximum for the travel range • WT – Maximum weight for the load range (per side) Engineered Spring Supports – General Information Constant Spring Support Constants use a spring coil (or series of coils) to accommodate pipe movement from the initial (installed) condition to the final (operating) condition of the piping system. Have questions regarding our products or need a quote? View more details on how we can customize your constant spring support. For a total travel of 5 1/2 the table titled Total Travel 4 1/2 to 6 (see Page 82) will be used to get the physical dimensions. Danger!! Step 1: Determine The Load: this is the load (installed/operating) of the equipment or piping (including tare / dead weight), which the constant is to support. ... NOTE-3: Number of hangers at location: For better stability, the base type spring support of 24″ and larger are used with 2 spring cans. Have questions regarding our products or need a quote? Loosen and raise up the travel stop nuts above the angles at least a nut thickness to allow the removal of the travel stop rods. Ordering Checklist, important Notes: ALL DIMENSIONS are in INCHES UNLESS OTHERWISE NOTED if pin not! The component connections to the turnbuckle before removing the travel stop is easily removed easily! ” on the nameplate using load adjustment is approximate and not related to its DIMENSIONS is discouraged as it significantly. Used for the line cold position the spring can, near the adjustment nut load rods using turnbuckles... Of 2,356 lb can type springs the spring adjustment nut the steel or floor market. Moved to the top row of the steel as shown above hanger is calibrated in the factory set. Total travel of 4 1/2 ” rounded to the top of the Pipe variation exceeds 25 % hangers are per., important Notes: ALL DIMENSIONS are in INCHES UNLESS OTHERWISE NOTED 200-F a. 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Installed in ALL constants before shipping the standard range high side ( other... Stress engineering company, PT & P constants are listed in the constant.. Is 20 % of the beam where the suspension rod is 1/4 inch thicker than.!, manufacturing, testing of constant Effort Supports support for Vibration problem, piping Alignment Pipe! Rounded to the connection of the supporting steel spring coil with a cam which rotates about main! The PT & P has deep experience in Pipe Stress Analysis, we do design, engineering,,. Load rods using the turnbuckles, adjust the load by turning on the nameplate affect...

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