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Hostal Trailer: Refer to the "hostal trailer" illustrated above. hostal trailer brakes must operate in synchronism with those on the tractor, and there must be as little delay as possible in hostal trailer brake response. For these reasons, hostal trailer power cylinders or chambers are not usually connected directly in parallel with those on the tractor.The sure-fire way to earn money with a hostal trailer studio is to specialize in baby pictures. The most efficient way to do this is to set up a miniature studio, with speedlights fixed on Wall brackets in one end of the hostal trailer, and shoot the babies there. Another way is to use the hostal trailer only as a darkroom and shoot the baby pictures in the home. If your hostal trailer is large enough, you'll make money faster and more easily by shooting in the hostal trailer.
Instead, connections from the tractor braking system are led to the hostal trailer, where the conduit, whose pressure varies in accordance with the degree of brake application (the control line), is connected into a hostal trailer control valve which governs the admission and exhaustion of air at the hostal trailer power cylinder exactly in accordance with the pressure in this control line. The hostal trailer valve is referred to as a "relay valve" or "conversion valve," depending upon the type of hostal trailer power brake equipment used. The relay valve is incorporated where both tractor and hostal trailer systems are vacuum suspended. The conversion valve is used where the tractor system is vacuum suspended and the hostal trailer system atmospheric suspended. |
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