Series 8500 Expansion Compensators are designed for installations where the principal movement is axial. Standard designs are 3/4” through 4” for steel pipe and copper tube with 2” or 3”axial compression. Service conditions are 200 psig to 500°F. Steel pipe ends are threaded, welded, grooved or flanged. Copper tube ends are male or female sweat connections.
8503-8506 Steel Pipe Compensator, 3/4″ to 4″ NOM
Information at a Glance
Series
8500 Expansion Compensators
Material
Steel
Size
3/4 -4 in. / 19-100 mm
Pressure
≤200 PSI / 13 & 7 Bar
Motion
3+ in. / 75+ mm
Canadian Registration
This product is registered throughout Canada under
CRN 0D9278.59870YTNADD3
Other Products
Product Description
Technology & Advantages
The bellows element of Series 8500 Expansion Compensators is completely enclosed and externally pressurized which prevents damage to the bellows and eliminates pressure instability. The pipe or tube telescopes into the compensator providing a smooth full bore, and isolates the bellows from the flow. Series 8500 products are available from stock and have a Three year full replacement warranty.
Type 8503 Cut-a-way
Common Applications
Series 8500 Expansion Compensators are designed for installations where the principal movement is axial. Standard joints are designed for 2” or 3” axial compression (pipe expansion) and 0.5” extension. If the primary movement is extension (pipe contraction) the compensator can be preset at the factory. The piping system must include anchors to react the force produced by pressure thrust and the bellows spring constant, supports to react the weight of the pipe and media, and guides to ensure that the pipe alignment is maintained.
Refer to Table 2 for the intermediate guide spacing in the center of runs.
Design Data
Linear thermal expansion of pipe or tube per 100 feet between 70°F & tabulated temperature
Note: Guide Spacing is center to center measured in feet.
Note: Tabulated data in Tables 3 & 4 is the force produced by pressure only. Refer to the Axial Spring rate tabulated in Tables 5 & 6 for the force resulting from the bellows stiffness.
Note: Tabulated data in Tables 3 & 4 is the force produced by pressure only. Refer to the Axial Spring rate tabulated in Tables 5 & 6 for the force resulting from the bellows stiffness.
Note: Standard construction is designed for 2″ or 3″ axial compression and 0.5″ axial extension. Refer to Ordering Instructions on Page 6 to order factory preset for axial extension
Ordering Information
- Refer to Tables 5 & 6 on Page 5 for the steel pipe or copper tube end configuration required for your application.
- If the travel required is unknown, see the method of calculation shown on this page.
Example
Threaded steel pipe ends 8503-231-2
200 psig at 500°F maximum
2.0″ axial travel maximum Axial travel, 2.0″ compression, 0.5″ extension
2″ NPS
8503-231-2
8503: Model specification, male pipe thread both ends, steel pipe, steel housing and guides
131: Size designation, 2″ NPS, (Table 5)
4: Axial travel, 2.0″ compression, 0.5″ extension
- Model 8503, 8504, 8505 and 8506 are available with all stainless steel construction for low temperature or highly corrosive service. Must be specified by written description.
- All Series 8500 compensators are available with multiple Alloy 625 bellows for highly corrosive media. Must be specified by written description.
Hyspan products are available from Sales Representatives and Distributors, or they can be purchased direct from the factory. The minimum factory order for open account customers, COD shipments, or bank card sales is $100.00 (USD). All major credit or debit cards are accepted. The minimum order for new account applicants is $100.00. Our Confidential Credit Application can be downloaded and forwarded to Hyspan for processing. All orders are subject to the following Terms and Conditions, and the above warranty applies to all material. Please read these documents.
Confidential Credit Application (13.9 KB), can be completed on line.
