C-3 W RELAY VALVE (Distributor Valve)
OPERATING FEATURES
Facility is provided on the locomotive to overcharge the regime pressure of air to 6 bar with a view to obtaining a faster brake release, a protective feature. Incorporation in the Distributor valve prevents of 50 Secs in freight service.
If the brake pipe regime pressure is set at 5 bar. A pressure limiting device restrict the maximum brake cylinder pressure to 3.8 bar irrespective of the drop in brake pipe pressure of the auxiliary reservoir pressure (as long as the auxiliary reservoir is at a sufficiently higher pressure than 3.8bar even after repeated brake applications, in single pipe system) However, after brake application is made full brake release is not achievable till the brake pipe pressure builds up to 4.83bar with the BP regime pressure at 5.0bar. Application and release graduation of 0.1bar are possible. A speed of propagations of around 280m/sec. is achieves due to a built – in – locomotive service) Provisions is made to “opinions” the brake release on a vehicle whose full brakes are applied – a feature which comes in handy especially during marshalling operations. In addition, a facility to vent all the brake equipment fully is provided. It is also possible to use the distributor with appropriate attachments with a pneumatic “Empty-Load” Device, either manually of automatically operated including an auto continuous variable load sensing devise. It is also possible to achieve higher braking effort by increasing BP regimen pressure when the BP is set at 6bar; the corresponding brake cylinder pressure will raise to about 4.7bar such higher brake effort operating conditions such as descent down a gradient.
