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PRODUCT
RT 396 Pump and Valves and Fittings Test Stand
Education / GUNT Hamburg / Mechatronics / Maintenance /
description

RT 396 allows the characteristics of different valves and fittings to be compared. The four typical kinds of valves and fittings - plug valve, gate valve,  butterfly valve and valves - are represented by a ball valve, a butterfly valve, two gate valves and a control valve. A safety valve and a dirt trap are also investigated. All valves and fittings are flanged, and can be installed in a test system with variable pipe length. The test system is part of a closed water circuit. Pressure measurement points upstream and downstream of the valve and fitting under test are linked by a differential pressure manometer. This manometer is fitted with a pressure switch which activates a warning lamp if the pressure difference becomes excessive, such as when the filter is clogged. An electromagnetic flow rate sensor permits precise recording of the flow rates.

  The closed water circuit contains three butterfly valves, to isolate the pump, and to adjust the pressure upstream and downstream of the test fitting. Differential pressures across the pump and test fitting, the power consumption and speed of the pump, and the flow rate and opening angle of the control valve are recorded and displayed. The measured data can also be used to plot pump characteristics.

  A vice is included, on a separate workbench, for maintenance and assembly work. The workbench also incorporates the necessary tools and connecting hoses.

  The well-structured instructional material sets out the fundamentals and provides a step-by-step guide through the experiments.

 

 

Learning Objectives / Experiments

- characteristics of a centrifugal pump
- behaviour during operation and function of
  * ball valve
  * butterfly valve
  * gate valve
  * wedge gate valve
  * control valve
  * safety valve
  * dirt trap
- valve characteristics
- determining the Kvs value of the control valve
- flow losses at the dirt trap depending on the filter 
  and its load
- planning, execution and assessment of 
  maintenance and repair operations
- reading and understanding engineering drawings 
  and operating instructions

Specification

[1] trainer for testing various valves and fittings
[2] installation of the test fitting in a test system of variable length
[3] safety valve 1", 1.5bar
[4] gate valve 1" / PN 20
[5] ball valve with pneumatic drive DN 50
[6] butterfly valve DN 50 / PN 16
[7] wedge gate valve DN 50 / PN 16
[8] electric control valve DN 50 / PN 16
[9] dirt trap DN 50 / PN 16 with 2 filter elements
[10] speed-controlled centrifugal pump with frequency converter
[11] fine pressure regulator adjusts compressed air pressure
[12] collecting tray under test device
[13] supply tank with level gauge
[14] manometers in intake and delivery line of centrifugal pump; pressure measuring points upstream and downstream of test device for differential pressure manometer with pressure switch
[15] digital displays for flow rate, power output, speed, position of control valve

 

Technical Data

Centrifugal pump
- power consumption: 4kW
- max. flow rate: 84m³/h
- max. head: 24m
- speed: 1.450...2.900min-1 
Plastic tank with lid: capacity: 400L

Measuring ranges
- differential pressure manometer: 0...2,5bar / 0...4bar
- manometer: 0...4bar / -1...0,6bar
- flow rate: 0...2.000L/min 
- opening range of control valve: 0...100%
- power output: 0...4.000W
- speed: 0...2.900min-1

 

Dimensions and Weight
LxWxH: 2.550x950x1.750mm (test stand)
LxWxH: 1.000x750x870mm (workbench)
Weight: approx. 395kg (in total)
Required for Operation
400V, 50/60Hz, 3 phase
Compressed air supply 8bar
Scope of Delivery

1 trainer with centrifugal pump 
1 set of test fittings: 1 control valve, 1 dirt trap, 1 safety

   valve, 1 gate valve, 1 ball valve, 1 butterfly valve,

   1 wedge gate valve
1 workbench with tools and hoses
1 set of instructional material

Order Details
080.39600  RT 396  Pump and Valves and Fittings Test Stand