Pneumatic

DRIVERS BRAKE VALVES

DRIVER'S BRAKE VALVE FV4a, Fv4ae

The main device for controlling the
automatic UIC air and EP brake, at all types
of locomotives and trains.
The driver's brake valve FV 4a provides the
following functions:
- charging of the pipe system. ;
- gradual braking and gradual releasing;
- emergency braking;
- additional charging of the brake pipe in
case of bad sealing, and automatical
pressure maintenance;
-enforced releasing by using a high
pressure surge
Drivers brake valve Fv4ae additionally to
the standard pneumatic function has electro
command for EP brake.

DRIVER'S BRAKE VALVE FA 3-e

This device is used for electro-pneumatic command of the automatic UIC brake, designed for:
- EMUs and DMUs
- train composition of aprox. 7 wagons
- railway vehicles
This assembly enables controlling of one MASTER VALVE, from two commanding places with electro switches - KEP 31.

DISTRIBUTOR VALVES

DISTRIBUTOR VALVE MH 3f HBG 310/ ...

The distributor valve MH 3f HBG 310/..., UIC
approved in 2003 is the most vital device for contol of the freight, passenger wagons, DMUs, EMUs and special vehicles.

Mh3f HBG 310/200

The commanding part MH3f HBG 310 assembled with additional relay valve in one body makes the following variants:
- Mh3f HBG 310/100 with single staged relay valve for all sizes of brake cylinders,
- Mh3f HBG 310/200 with two staged relay valve and pneumatic or electric change - over device for G/P i.e.
R/RIC, used for different types of freight and passenger wagons,
- Mh3f HBG 310/300 is the basic unit which commands different types of relay valves for S and SS regime, or another applications.

LOCOMOTIVE OPERATING VALVE Lst 1

Lst 1 is a device, specially designed for controlling the locomotives brake system, aiming to satisfy the specific needs of this type of railway vehicles, such as:
- gradual braking and releasing
- direct braking
- anti-skidding protection
- operating in freight (G)/ passenger (P) and rapid
(R)braking regime
- operative pressure - from 0 to 10 bar.

VALVES

BRAKE ACCELERATOR VBK 100

The VBK 100 valve is an mandatory device at the contemporary passenger trains. When operating, it accelerates the reaction of the
distributors, all train long. This valve provides the brake pipe to be discharged up to 2,5 bar, it is insensitive to the high pressure surge.
The brake accelerator VBK 100 is UIC approved in 1998.

AUTOMATIC LOAD DEPENDENT BRAKING

PASSENGER WAGONS

The assembly of a relay valve AKR and a flexion measuring valve UV is used for mounting into the brake system of: post wagons, urban and suburban trains. These two devices provide constant controlling, of the load-depending pressure in the brake cylinders.
Because of its pneumo-mechanical characteristics, the flexion measuring valve UV is convenient for installment onto various types of bogies.

FREIGHT WAGONS

The relay valve AKR, combined with the weighing valve MV 1, enables constant variation of the pressure in the brake cylinders, in dependence of the load weight of the wagon, in accordance with the UIC regulations "SS/S" and "SS" for freight wagons. The AKR-MV 1 system, is approved by UIC in 1982. The weighing valve MV1 YF, is designed to be built in the bogie Y25, and MV 1M in double axled wagons.

UB BLOCK

UB block is a compact unit designed for brake control on freight wagons. All control elements of the brake system are mounted on a central bracket type S5, i.e: distributor valve MH with working chamber and isolating cock, one or two relay valves AKR. By modifying the supporting bracket, fitting of other types relay valves or el. valves is possible. Two basic types exist
- UBA 1 designed for freight wagons in “S” regime
- UBA 2 designed for freight wagons in “SS” regime

ADDITIONAL PNEUMATIC EQUIPMENT

COUPLING HOSES

Coupling hoses with heads for brake and feed pipe, and connecting threads of 1" and 5/4". Their technical characteristics are complying to the UIC specifications.

NON-RETURN VALVES

The non return valves provides single direction of air flow. There are various sized valves, used in the pipe installation or at the brake panel. The operating pressure is up to 10 bar. Their bodies are made of aluminium alloy, and the internal parts of uncorrosive materials.

END COCKS

End cocks (left and right) with connecting threads of 1 " and 5/4" and operating pressure up to 10 bar. The handle is kept in one of its rest positions, pressed by a special spring mechanism. By rotating the flange, the cock enables straight or angled air flow. Its technical characteristics are fully complying with the UIC specifications.