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Integrated Slack Adjusters Brake Cylinders

These are manufactured in 8'' dia (203 mm) with 3.34'' stroke (95 mm). This is a Brake Cylinder with Integral Slack Adjuster for application in Indian Railways Coaching Brake System which eliminates use of separate Slack adjuster and also reduces rigging and levers to a considerable extent.
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Air Brake Hose Coupling (Type - UIC)

Air Brake Hose Couplings are used in between two adjacent vehicles for continuation of air flow between brake pipe as well as in feed pipe lines.
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Angle Cock

Cut-off Angle Cocks are provided at the end of brake pipe and feed pipe on each vehicle to maintain flow of air in the air brake system during the run of the vehicle. These cocks are closed while isolating the vehicle from the train for any reason. Cut off angle cock are supplied either in 1.14'' (32 mm) or 1'' (25 mm) sizes.
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Brake Cylinder

Stone India manufactures Brake Cylinder in two versions i.e. underframe mounted version Brake Cylinder having diameter of 355 mm(14'') as well as 300 mm (12''). Bogie mounted versions are also manufactured.

Brake Cylinder receives pneumatic pressure from auxiliary reservoir after being regulated by Distributor Valve in case of brake application and develops mechanical brake power by outward movement of piston assembly.
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Load Sensing Devices

Load Sensing device type VTA are manufactured as per SAB-WABCO design and also as per Stone India's own design. These are used for Freight Wagon Brake System application instead of manual empty load changeover devices to adjust brake cylinder pressure depending on the condition of the Wagons i.e. loaded or empty.
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Air Brake Systems Single Car Test Rig

The Single Car Test Rig is a mobile unit with trolley arrangement & that can easily be transported to a single vehicle for testing the particular vehicle brake system.

A large number of Stone India make Single Car Test Racks are being used for testing Wagon Brake System in Wagon Depots of Indian Railways
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Panel Brake Systems

The Tri-Plate Panel Mounted Brake System is mainly made out of Aluminium alloy plates specially machined and then sandwiched. These are used for compact assembly of brake valves thus saving the space as well as reduction of large number of pneumatic fittings. This is modular in concept as well as maintenance friendly.

Vacuum Console Panel is a compact unit housing the Vacuum Valves as well as the Filters and also a small panel comprising of other associated Valves related to Vacuum Brake System in the Locomotive. This eliminates dispersed fitment of Vacuum Valves in the Locomotive Brake System thus eliminating leakages as well as saving of space in the Locomotive.
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AB Test Rack

This is a composite test rack where all the WABCO Brake Valves can be tested by using separate test plates for individual Brake Valves.
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Unit Type BF2S Tread Brake

Tread Brake Unit type BF2S as per SAB-WABCO design is a very compact device integrating entire brake actuating mechanism for Railway vehicles comprising of Brake Cylinder, Levers for magnification of Braking efforts, Slack Adjuster to keep Cylinder stroke constant irrespective of Brake Shoe Wear and Brake Shoe Holder with twin Brake Blocks.
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C3W Distributor Valve

C3W Distributor Valve is a graduated release UIC approved Distributor Valve for application in the Coach Brake System used for initiating the brake application. These valves are supplied in Aluminium version as well as Cast Iron version as far as Body, Top covers and Bottom Covers are concerned.
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C3W REL 10 Distributor Valve

C3W REL-10 Distributor Valve is an unique distributor valve where the brake application and release time remains identical irrespective of the brake cylinder volume of the particular coach.

This valve was specially developed when Indian Railways started using bogie mounted brake system for the coaches as well as a large number of coaches still were operating with underframe mounted brake system.

This is a very compact distributor valve with an inbuilt relay valve.
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VA-1 Release Valve

The va-1 release valve without choke is used as a remote controlled cut out cock. It is installed in the vacuum brake pipe line between the va-1b control valve and the train vacuum brake pipe.
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MU-2B Valve

The MU-2B Valve is a manually operated, two position and multi-ported valve arranged with a pipe bracket and is normally used for locomotive brake equipment for multiple unit service between locomotives equipped with similar system in conjunction with F-1 Selector Valve.
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D-24 B Feed Valve

The D-24 B Feed Valve is a large capacity highly sensitive relay valve which is designed to direct the flow of air under pressure to various devices in air brake equipment arrangement at a predetermined pressure.
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C2N Feed Valve

The Feed Valve is a large capacity highly sensitive relay valve Which is designed to direct the flow of Air under pressure to various devices in Air Brake Equipment at a predetermined pressure.
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Twin Tower Heatless Regenerating Type Air Dryers

Twin Tower Heatless Regenerating Type 'Vaporid' Air Dryers of WabtecUSA design are manufactured and supplied for continuous drying of incoming air for Electric and Diesel Loco Brake System.

These dryers are very compact in design having the inbuilt after filter. These are light in weight, easy to install and it requires minimum down time as replacement of desiccant bags can be made in position. The potted Electronic control module ensures reliable operation of the dryer even in the adverse environment.
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Parking Brakes

The Parking Brake on Coaches and Car can be kept for a long time to protect the rolling stock without Air Pressure.
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Electro Pneumatic Brake System

The electro pneumatic brake system consists of an electrically controlled air brake for normal service use giving extremely sensitive and rapid application of the brakes, together with well known automatic air brake providing a stand by brake to be used for normal service stops, if required. The Automatic brake also provides for emergency application of the brake initiated by the driver, the guard, or by a breakaway. Self lapping E.P. brake can be graduated in application and release. Standby self lapping automatic air brake has graduated application and direct release feature. The brake system is suitable for EMU cars operating in multiple. Modular Panel design eliminates piping & complicated casting, easily retrofitted in existing EMU coaches.
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VCD

Vigilance Control Device (VCD) is for monitoring alertness of engine crew through multi-resetting failsafe system which periodically gets reset by specified normal operational activities of the crew in addition to acknowledgement of vigilance check by operating foot pedal or ACK push switch during locomotive hauling. In case, driver becomes incapacitated, VCD initiates warning by flashing indication, sounding of buzzer and finally applies emergency brake to bring locomotive in stand still.
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4 KW Train Lighting Alternators

Brushless Alternators for Self-generating Coaches are manufactured for supplying the power to the Train Lighting for the conventional Coaches and also electrical load for Air Conditioned Coaches.

The Alternators are presently being manufactured in capacities of 3 KW, 4.5 KW, 18 KW and 25 KW both in 24 V and also 110 V DC.

Alternators are driven by Pulleys (Flat Belt'V' Belt drive) which are also supplied as standard accessories along with Belt Tension Mechanism.
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25 KW Train Lighting Alternators

Brushless Alternators for Self-generating Coaches are manufactured for supplying the power to the Train Lighting for the conventional Coaches and also electrical load for Air Conditioned Coaches.

The Alternators are presently being manufactured in capacities of 3 KW, 4.5 KW, 18 KW and 25 KW both in 24 V and also 110 V DC.

Alternators are driven by Pulleys (Flat Belt'V' Belt drive) which are also supplied as standard accessories along with Belt Tension Mechanism.
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ERRU 4 KW Gas Transmitter

The ERRU 4.5 kW used in Indian Railway AC, non AC coaches receives the 3-phase AC voltage generated from a brushless alternator. The output of the alternator is AC in nature with variable voltage and variable frequency depending on the motion of the train. This AC voltage is rectified and passed through the controller to generate regulated DC voltage as required for AC and non AC coaches. It also charges a battery bank through a voltage and current controller.
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ERRU 25 KW Gas Transmitter

The ERRU 25 kW used in Indian Railway AC, non AC coaches receives the 3-phase AC voltage generated from a brushless alternator. The output of the alternator is AC in nature with variable voltage and variable frequency depending on the motion of the train. This AC voltage is rectified and passed through the controller to generate regulated DC voltage as required for AC and non AC coaches. It also charges a battery bank through a voltage and current controller.
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  • Samir Kumar (Stone India Limited)
  • 3rd Floor, Stadium House No. 81-83, VN Road, Churchgate, Mumbai, Maharashtra - 400020, India
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