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Eight Piece Sectioned Valve Set For Demonstration Manufacturer,Supplier and Exporter in India

Product Code : EL-TWL-13131
Jlab Export is a leading Eight Piece Sectioned Valve Set For Demonstration Manufacturer,and suppliers in India

Eight real air conditioning and refrigeration components, each cut open to show its inner parts, make up this demonstration set. It holds an automatic expansion valve, two thermostatic expansion valves, a solenoid valve and a 4-way reversing valve. A hand shut-off valve, a compressor charging valve and a filter drier complete the set, all mounted on an aluminium frame.

Specifications

Pieces	8
Expansion valves	Automatic expansion valve, thermostatic expansion valve with internal equaliser, thermostatic expansion valve with external equaliser
Other valves	Compressor charging valve, hand shut-off valve, solenoid valve, 4-way reversing valve
Line component	Filter drier
Construction	Sectioned original components of air conditioning and refrigeration systems
Frame	Aluminium
Minimum order quantity	10 units
Dispatch time	Usually 4–6 working days
Manufacturer	JLab (Jain Laboratory Instruments Pvt Ltd), Ambala, India

Classroom Demonstrations with the Valve Set

The teacher takes the class through one valve at a time. On the thermostatic expansion valves, students trace how bulb pressure pushes the diaphragm down while the spring and evaporator pressure push back. They then find the equaliser passage inside one body and the external equaliser connection on the other. The solenoid valve shows the plunger that lifts off its seat when the coil is powered, and the filter drier shows the desiccant that holds moisture.

After the demonstration, students move to a working trainer to see the same parts in action. The Basic Refrigeration Training Unit can meter refrigerant by capillary tube, automatic expansion valve or thermostatic expansion valve, so they compare evaporator pressure and superheat with each one. On the Modular Refrigeration System Trainer they fit a thermostatic valve with an equaliser and a solenoid valve into a circuit of their own.

Frequently Asked Questions

Which components are in the set?
Eight sectioned parts. The expansion devices are an automatic expansion valve and two thermostatic expansion valves, one internally and one externally equalised. The other five are a compressor charging valve, a hand shut-off valve, a solenoid valve, a filter drier and a 4-way reversing valve.

What is the difference between internal and external equalising?
In an internally equalised valve, evaporator inlet pressure reaches the underside of the diaphragm through a passage in the body. An externally equalised valve takes this pressure from a small tube joined at the evaporator outlet, which corrects for pressure drop in long or multi-circuit evaporators.

How does an automatic expansion valve differ from a thermostatic one?
An automatic expansion valve has no sensing bulb. Its spring and diaphragm hold the evaporator pressure steady. A thermostatic valve reads the suction line temperature through its bulb and keeps the superheat steady as the load changes.

What does the 4-way reversing valve show?
Its slide switches the compressor discharge between the outdoor and indoor coils. In a heat pump this turns the cooling cycle into a heating cycle while the compressor keeps pumping in the same direction.

Can the sectioned valves be fitted into a working system?
No. Each part has been cut open to show its inside, so it cannot hold pressure. Use the set for identification and explanation, and use working valves on a trainer for practicals.