Shutdown Maintenance

For planned shutdowns, team of skilled engineers & technicians is deputed at plant site along with mobile facilities for machining, testing, calibration activities to execute the jobs within stipulated time frame & to the entire satisfaction of customers.

Total job comprises of dismantling the valves from installation, refurbishment of the valves and checking the suitability for use.

We also undertake contract for mounting, tubing & calibration of various accessories like valve Positioners, Air Filter Regulators, Limit Switches, Solenoid Valves, Air Lock Relays, Boosters, I/P Converters & Position Transmitters.

Change of CV (Co-efficient of Valve)

We possess CV TESTING LABORATORY and can test CV of a valve and design the TRIM parts of the valve according to the required possible CV. At hi-tech controls we have developed c/v testing laboratory, c/v test of valves is carried out and according to it the required c/v of the valve is obtained and for this the trim parts are modified accordingly.

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Online Lapping

We possess grinding and lapping machine and can undertake online lapping of valves

Modifications / Upgradation in Valves

Due to changes in parameters or difficulty in usage many times valves need to be modified to meet the requirements of present working condition & ease of operations.

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As shown above the shlumberger actuator was replaced with Virgo actuator within 3 days.

    These modification include

  • Conversion of unbalance trims to pressure balance trims and vice versa.
  • Change of Actuators to meet present conditions.
  • Change of valve fails open/close action.
  • Change of M.O.C of trim to meet corrosive / erosive fluids.
  • Stellite wielding at the trim matching parts is also done.
  • Conversion of manual valves to pneumatic valves
  • Conversion of on-off valve in to control duty valve.
  • Mounting of various types of accessories.
  • Conversion of class IV leakage seat to tight shut i.e. providing soft seats.
  • Conversion of valves to gland packing to bellows sealed valves & vice versa.

HI-TECH provides solutions in house & at customer’s site for all the above requirements.

Supply of Spares / Accessories

Over the period we have developed in-house facilities and extensive vendor base that have expertise in their field for the supply of trim actuator parts as per customer drawings / dimensions.

We also develop parts of valves which are no more manufactured like, rotary plug, body seat, cage, spline, rubber parts etc having special material.

We also undertake contract for mounting, tubing & calibration of various accessories like valve Positioners, Air Filter Regulators, Limit Switches, Solenoid Valves, Air Lock Relays, Boosters, I/P Converters & Position Transmitters.

We also manufacture and supply the following parts:-

All types of specially designed parts from Solid rods – cast and forged. Required for control valves and other required by customer as per drawing or sample like: Valve Body, Plug, Seat Ring, Cage Guide, Body Stem, Yoke, Actuator Stem & Spring, Piston Cylinder, Ball, Eccentric Plug, Butter Fly Valve etc. in different types of chemical composition & materials like SS 316/304, SS-316-L/304 –L, SS-410/416, Cd4MCu, 440-C, Monel, Hastalloy B/C, Nickel, Titanium, Inconel, Aluminum & Brass.

Rubber parts for pneumatic Actuator, Cylinder, Pneumatic Knocker and other as per customer requirement like O Ring, Piston Seal, V Seal, Sealed Bellows, different types of Diaphragm in different types of Rubber like, Neoprene, Nitrile, Ebonite, Viton, and Silicon etc. We also possess a ready stock of all the above items.

Teflon parts like Seat Ring for Ball Valve, Sleeve for Plug Valve, Teflon Bellows, Gland Packing V Ring and other Control Valve related parts in different sizes and types. Also, Teflon like Glass, Carbon, and Bronze fill Teflon & Pure Teflon.

Special types of Nuts & Bolts, Instrument Fittings & Gear, Pneumatic Knocker, Ball Joint Linkages & Mechanical parts.

Customized Valves / Products