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MT 154

FEATURES:
- Practical exercise based on the assembly of a shut-off valve
- Broad scope of learning with interdisciplinary problems
- Comprehensive and well-structured instructionalmaterial

DESCRIPTION

Technical Description

Shut-off valves of the type included in the MT 154 unit are used to shut-off and restrict the flow of media. They must be capable of total flow shut-off. The closing of the valve should be such that the volumetric flow does not suddenly drop to zero so as to prevent shock loads. The valve taper is moved by the spindle and ensures a metallic seal against the seating ring pressed into the housing. The spindle is sealed by a packing gland. The joint between the housing and the clamp cover is sealed by a flat seal.

The MT 154 project unit presents an introduction exercise to the area of assembly techniques. The assembly and disassembly processes can easily be completed within standard lesson times. Basic tools, all supplied with the kit, are required for assembly. 

The unit is of most benefit in teaching if small groups of 2/3 students work independently. The group has a defined task to perform, with clear assignments to complete.

The comprehensive instructional material is oriented to practical needs. It includes a complete set of drawings with a general arrangement drawing, parts list and individual part drawings. 

Together with the hydraulic valves and fittings test stand MT 162, the assembled valve can be subjected to a pressure test.


Learning Objectives / Experiments

- design and function of a shut-off valve
- assembly and disassembly, including for the purposes of maintenance and repair
- reading and understanding engineering drawings
- planning and presentation of the assembly process
- familiarisation with various machine elements: thread mechanism, seals, packing gland
- material selection criteria
- leak testing (together with the hydraulic valves and fittings test stand MT 162)

FEATURES

Specification
[1] assembly exercise for engineering training
[2] shut-off valve PN 16 as parts set, with associated set of small parts, in a sturdy case
[3] shut-off valve consisting of housing, hand wheel, clamp cover, packing gland frame, taper and spindle
[4] spindle sealing based on the gland principle
[5] the kit forms part of the GUNT assembly, maintenance and repair practice line


Technical Data
Shut-off valve with flange connections:
- DN25
- PN16
- stroke: 13mm
- housing, hand wheel, clamp cover, packing gland frame: grey cast iron 
- taper, seating ring, spindle, ring segment etc.: stainless steel


Dimensions and Weight
LxWxH: 600x450x180mm (case)
Weight: approx. 16kg


Scope of Delivery
1 complete set of shut-off valve parts 
1 box for small parts (bolts, washers, nuts, gaskets)
1 set of assembly tools, consisting of:
- 3 open-end wrenches: size 13, 16, 22
- soft-faced hammer
- punch
1 case with foam inlay
1 set of instructional material, consisting of: technical description of system, complete set of drawings with individual parts and parts list, description of assembly and disassembly sequences, also in relation to repair operations

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