Kalpataru Piping Solution is a manufacturer of instrumentation tube fittings for the small bore impulse and process lines, such as twin-ferrule compression fitting, 37-degree flare tube fittings, ferrules, plugs, caps and end closures in stainless steel, Inconel, Monel, super duplex and PTFE. These are the leak-tight connections that bring instrument tubing to gauges, transmitters and analysers and keeping the type and grade correct is the key to a hook-up that will not leak. The tables below will direct you to the proper fitting and grade, if you know them.
The busiest grade lines are the Inconel 600 tube fittings and the stainless range, and every fitting pairs with our instrumentation valves so a complete needle-valve-and-fitting hook-up comes from one supplier in one material. Fittings are gauged and, where required, leak tested before dispatch.
Tube Fitting Types
The type is how the fitting grips and seals the tube.
|
Type |
How it seals |
Best for |
|---|---|---|
|
Twin-ferrule compression |
Two ferrules, front seals, back grips, as the nut is tightened |
Gas-tight instrument and process tubing, the general standard |
|
Single-ferrule compression |
One ferrule that seals and grips |
Simpler, lower-cost tubing connections |
|
37-degree flare (JIC) |
The tube is flared and clamped against a 37-degree seat |
Hydraulic and higher-vibration lines |
The 37-degree flare tube fittings are the busiest single line here, used where a flared, reusable connection suits the service.
Fitting Components
Beyond the fittings themselves we supply the individual components: front ferrules and back ferrules as spares, allen key plugs and port plugs, caps and fitting end closures for sealing off a line. Keeping ferrules and plugs to the same grade and series as the fittings is what keeps a joint gauged and leak-tight.
Grades We Supply
The grade is chosen for the service chemistry and pressure.
|
Grade |
Best for |
Go to |
|---|---|---|
|
Stainless 304 / 316 |
General instrument and process tubing |
Stainless tube fittings |
|
Inconel 600 / 625 |
High temperature and aggressive corrosion |
Inconel 600 / 625 tube fittings |
|
Monel 400 |
Hydrofluoric acid and seawater service |
Monel 400 tube fittings |
|
Super duplex |
High-chloride and seawater, high strength |
Super duplex tube fittings |
|
PTFE / Teflon |
Chemically inert, non-metallic lines |
PTFE tube fittings |
We hold Inconel 625 tube fittings, Monel 400 tube fittings, super duplex tube fittings, stainless steel tube fittings and PTFE instrumentation tube fittings across the fitting range.
Complete the Hook-Up
A tube fitting is one half of an instrument hook-up; the other is the valve. We hold the matching instrumentation valves, needle, ball, manifold and monoflange, in the same grades, so a complete impulse line from the process take-off to the transmitter can be specified in one material with one certificate trail. Ordering the fittings and valves together keeps the hook-up from mixing metals at the joint.