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MT 156

Assembly Exercise: Gate Valve and Angle Seat Valve

Technical Description

Gate valves are used as shut-off devices for water, water vapour, oil and other non-aggressive liquids. Operating temperatures of up to 200°C are possible. Gate valves in this design are operated by a hand-wheel turned spindle. During closing, the slider is pushed by the spindle nut into the sealing rings in the housing.

Angle seat valves are the typical fittings used in drinking water pipes. Angle seat valves are also used in many areas of industry. They are designed for neutral fluids and gaseous media. Stainless steel versions are suitable for mildly and highly aggressive media. The valves can be used for high flow rates, and are non-sensitive to lightly contaminated and high-viscosity media.
The valve spindle is usually arranged at a 45° angle to the direction of flow. Angle seat valves generate substantially lower pressure loss than globe or elbow shut-off valves owing to the less tortuous flow path of the fluid.
The MT 156 practice kit forms part of the GUNT assembly, maintenance and repair practice line designed for training at technical colleges and in company training centres. A close link between theory and practice is key to the learning content.

MT 156 enables two typical industrially relevant valves to be assembled and disassembled. Students become familiar with all the components and their modes of operation. The parts are clearly laid out and well protected in a tool box. Systematic assembly and disassembly of a the valves is practiced. The accompanying material details the individual steps involved in assembly, and provides additional information on the areas of application, mode of operation and design of the fittings.

Learning Objectives / Experiments

- Design and function of a gate valve
- Design and function of an angle seat valve
- Assembly and disassembly, including for the

purposes of maintenance and repair

- Replacing components (e.g. seal)
- Comparison of 2 different shut-off devices
- Reading and understanding engineering drawings
and operating instructions
- Leak testing (together with hydraulic fittings test

stand MT 162)

Features

* Practical exercise based on the assembly of a gate

valve and an angle seat valve₁
* Comprehensive and well-structured instructional

material

Alternative products

MT 110.02 -- Assembly Exercise: Spur Wheel / Worm Gear Mechanism
MT 140.02 -- Assembly Exercise: Piston Compressor
MT 154 -- Assembly Exercise: Globe Valve
MT 157 -- Assembly Exercise: Butterfly Valve and Non-Return Valve
MT 158 -- Assembly Exercise: Ball Valve and Globe Valve
MT 171 -- Assembly Exercise: Hydrodynamic Journal Bearing
MT 180 -- Assembly & Maintenance Exercise: Centrifugal Pump
RT 396 -- Pump and Valve Test Stand

Specification

[1] Learning concept for assembly exercises on shut-off valve fittings
[2] Gate valve with hand wheel, as set of parts

[3] Angle seat valve with manual drive, as set of parts
[4] Complete assembly tool kit
[5] Valve parts and tools housed in a sheet-steel tool box
[6] The kit forms part of the GUNT assembly, maintenance and repair practice line

Technical Data

Gate valve with flange connections:
- DN 40, PN 10
- materials:
housing, cover, taper: grey cast iron
spindle, sealing surfaces of housing and taper:
stainless steel
packing rings: graphite
Angle seat valve with flange connections:
- DN 25, PN 16
- materials:
housing: stainless steel
metallic inner parts: stainless steel
seals: PTFE

Dimensions and Weight

l x w x h : 690 x 360 x 315 mm (box)
Weight : approx. 35 kg

Scope of Delivery

1 complete set of gate valve parts
1 set of replacement parts, consisting of:
- 3x flat seal
- 3x packing gland seal
- 2x packing gland
1 complete set of angle seat valve parts
1 seat seal for angle seat valve
1 set of tools, consisting of:
- 1 combination wrench, size 10
- 4 single-end wrenches: size 24, 30, 2x 17
- 2 open-ended wrenches: size 27, 50
- 1 Allen key, size 2.5
1 set of bolts, nuts, washers
3 rectangular boxes for small parts
1 sheet-steel tool box 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

processes, also in relation to repair operations

Order Details

051.15600 MT 156 Assembly Exercise:

Gate Valve and Angle Seat Valve