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Steam-water pipes of the spring position control valve group: the control valve group supports under the pipe elbow, usually for the normal temperature of the pipeline can be fixed frame, with thermal pipeline, should according to the requirements of the flexible analysis will be set to a fixed frame, a frame another set to slide or guide frame. If valve group is very long, only on both ends of the valve group support, can make the valve group of intermediate prolapse is larger, should add a bracket in the middle, the middle bracket to use adjustable bracket, in order to install. Can also be set to a fixed frame, middle frame expansion to the displacement on both ends.

steam-water variable spring is mainly composed of cylindrical helical spring, displacement dashboards, shell and parts such as elastic nut.
steam-water variable spring according to the different methods of installation, can be divided into A, B, C, D, E, F, G seven type.
type A - - - - On the thread type suspension;
B - - - - Single ear suspension type;
- C type - - - Ears hanging type;
- D type - - - On the adjusting suspended type;
E - - - - Under the adjusting suspended type;
F - - - - - - - - - Support on type;
- G type - - - Parallel suspension type; To install and use:


1, type A: derrick on one end is connected with the root; At the other end with steam-water thread screw in the spring of roof bolt hole, and lock nut. Basket nut bottom connected to the pipe top derrick with screw thread, rotating basket nut, the installation position of pipe segments to rules, and then use nut locking;
2, B, C: top with derrick or steam-water spring hanger, derrick, hanging plate on the other end to take root in the girder or floor. Other same as type A;
3, type D: bolts will be fixed on the girder or floor, steam-water spring boom across the hanger ontology and pipes, rotating the top nut, to pipeline hoisting installation location, and then use the nut lock;
4, E: bolts on the steel beam or slab with steam-water will spring. Other same as type A;
5, F type: bolts will spring steam-water plate fixed on the foundation, the steel beam or slab, the top level of support at the bottom of the pipe or the bend. When the actual supporting height and provide installation height from design, rotating load column fine-tuning. Its between Lmax and Lmin amount of fine-tuning. Spring model VS30F0 ~ 9 + 6 mm, VS30F10 ~ 24 for + 12. 5 mm, spring model VS60F, VS90F, VS120F, VS150F, VS180F + 25 mm respectively;
6, type G: rotating basket nut, make on the steel beam or slab with derrick taut, adjust the hanger to design the installation height, then the basket with nut nut lock.

the purpose and scope of application:
this standard applies to the displacement range for VS ( 0～180mm) TD ( 0 ~ 120毫米) , load range is 154 ~ 217384 n, using temperature range - Steam-water variable spring of 20 ℃ ~ 200 ℃.
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