About us

Who we are?

The History of RNR machines / Exal Corporation

Spans more than 3 decades. Experience with a combination of technical capabilities has always been our strong point.

We have numerous installations > 30,000 cfm with some single plant installations running into 100,000 CFM. The experience of such large installations is invaluable. The performance of dryers are inter-linked in large common header systems. Closing a valve in one location can result in operational changes in a compressor and/or a dryer or multiple units.

RNR machines today manufactures some of the largest dryers in the world. Our utility wide experience allows us to visualize common issues plaguing large utilities. Our designs are not a simple extrapolation of size. It is a combination of unique theoretical knowledge and in-house propriety simulation which is used along with experience based mechanical and thermal structures to aid machine performance.

What most of our competition gets wrong: is 1000 cfm is “X” then 10,000 cfm is “10X”.

RNR, Exal optimizes its design to get the maximum output at lowest costs. We customize almost every aspect of our machine design.

With knowledge and strength comes commitment. Our systems are committed not just on paper but at site. The result is a confidence which the client can have in us. RNR/ EXAL enjoys almost a 95% client retention rate due to this reason.

RNR machines has a rich experience of over 3 decades in the compressed air and gas field.

1984. Foundation

Mr. R Jayakumar co-founded Purifair and Clean air with the intention of supplying compressed air dryers to air compressor manufacturers.

1997. Flair Corporation

Flair Corporation (Now. Hankison Inlt. SPX Process dehydration and filtration) takes majority stake in Purifair and Cleanair and rebrands company as Puri-Flair.

1998. Exit from Puri-Flair India Ltd.

Mr. R Jayakumar sold his entire equity to Flair Corporation and makes and exit from Puri-Flair India Ltd.

2001. Formation of EXAL Corporation

Mr. R Jayakumar forms EXAL Corporation for manufacturing Compressed Air and Gas Dryers with a manufacturing facility at GIDC Makarpura.

2007. Mr. Rakesh J. Joins

Mr. Rakesh J. joins the company with a vision for growth.

2018. Formation of RNR Machines

RNR Machines is formed as a succession entity to Exal Corporation.

2021. Establishment of New Facility

RNR Machines establishes new facility at 380 Horizon Industrial Park

Design

Two customers can operate the same Air / Gas Compressor in very different ways. The result on the dryers are also different. While many of the points are redundant, we base our design decisions for dryers ( >1500 SCFM) on the following points, parameters and factors :

Compressed Air/ Gas Flow Rate (Volumetric or Mass)
Air / Gas Compressor Type

Centrifugal, Reciprocating, Screw
No. of Compressors, Dryers, Filters in the utility
Header Structure (Size, Branches, Valves used, MOC etc.)
Are they Air Cooled/ Water Cooled?
No. of Compression Stages?
Are they Lubricated? Non-Lubricated

Maximum and Minimum ambient temperature at the place of installation

Working Pressure (Maximum and Minimum)
Dewpoint Desired (Atmospheric/ Pressure)
Cooling Water Availability. Cooling Water Temperature. Quality?
Compressed Air/Gas Discharge Temperature
Maximum Allowable Pressure Drop
Air Quality required at Outlet
What is the desired Material of Construction?
Is the environment corrosive to certain materials?
Is it a hazardous area?

RNR Machines

The infrastructure of RNR Machines has been developed with a combined vision of scalability, quality and efficiency. Facilities include:

Infrastructure

Multiple 5 to 20 Ton Electric Cranes

CNC machines

Drilling Machines

Compressors for Testing and Painting

Welding Machines (ARC, Tig, Mig)

The plant is divided into 2 sections with a double height 40 Feet Section reserved for assembly of large machines and skids. The second section is two floor are reserved for fabrication, assembly, testing and smaller machinery. Apart from a separate machine shop, there is a separate office + admin + engineering building.

Exal Corporation

RNR Machines Team

R Jayakumar(Founder)

BE Chemical Engineering Calicut University, India BSC Chemistry Calicut University, India

Rakesh Jayakumar(C.E.O.)

MS. Mechanical Engineering & Financial Engineering University of Michigan, Ann Arbor,USA BS. Mechanical Engineering Purdue University, West Lafayette, USA