Semi-Hermetic Two Piston Reciprocating Compressor Manufacturer,Supplier and Exporter in India
Product Code : EL-TWL-13125
Jlab Export is a leading Semi-Hermetic Two Piston Reciprocating Compressor Manufacturer,and suppliers in India
A semi-hermetic compressor keeps its motor and pump inside a bolted casing that can be opened for service. This teaching model is cut from an original two piston reciprocating unit to expose all its key parts, with each part colour coded. It is belt driven and has a rotating handle, so the pistons and crankshaft can be moved slowly while the class watches.
Specifications
| Compressor type | Semi-hermetic, reciprocating, two pistons |
| Construction | Cut out from an original compressor to expose all key parts |
| Drive | Belt driven, with a rotating handle |
| Finish | Colour coded |
| Use | Teaching model of compressor construction |
| Minimum order quantity | 10 units |
| Dispatch time | Usually 4–6 working days |
| Manufacturer | JLab (Jain Laboratory Instruments Pvt Ltd), Ambala, India |
Workshop Exercises with the Cut-Away
Trainees turn the handle and follow one piston through a full stroke. As it moves down, the suction valve opens and gas fills the cylinder. As it rises, the gas is squeezed until the discharge valve opens. They then name the crankshaft, connecting rods, valve plate and motor, and point out the bolted heads and covers that make the unit serviceable.
Set beside the Reciprocating Hermetic Compressor, the model shows why a welded shell has to be replaced while a bolted one can be repaired. Instructors can then move to the working semi-hermetic compressor on a Modular Refrigeration System Trainer to link each part to running pressures.
Frequently Asked Questions
What is the difference between semi-hermetic and hermetic?
A hermetic compressor is sealed in a welded steel shell and is replaced when it fails. A semi-hermetic compressor has its motor and compressor in a bolted casing, so heads, valve plates and gaskets can be taken off and renewed on site.
Why does it have two pistons?
Two cylinders on one crankshaft move more gas each turn than one cylinder of the same size, and the flow comes in smaller, more even pulses. Turning the handle shows the two pistons moving at different points of their strokes.
How do the suction and discharge valves work?
They are thin reeds that open and close with pressure. The suction valve opens when the falling piston drops the cylinder pressure below suction pressure. The discharge valve opens when the rising piston pushes it above discharge pressure.
Can the model pump refrigerant?
No. It is a sectioned teaching model and cannot hold pressure. Use it to explain construction, and use a working trainer for pressure and temperature readings.
Other Sectioned Compressors
- Rotary Vane Hermetic Compressor
- Scroll Hermetic Compressor
- Screw Type Compressor
- Reciprocating Compressor (Actual Cut Section) (mounted on a base)
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Last updated: 6 November 2026
