BENDIX BW1582 Manuel d'utilisateur télécharger pdf

SD-03-2202

OPERATION

As air under pressure enters either end of the double check

valve (inlet port) the moving shuttle or disc responds to the

pressure and seals the opposite port, assuming it is at a

lower pressure level than the other. The air flow continues

out the delivery port of the double check valve. The position

of the shuttle or disc will reverse if the pressure levels are

reversed. Double check valves are designed so that the

shuttle or disc can never impede the backflow of air in the

exhaust mode.

Figure 3 (see page 2) illustrates a typical use of a double

check valve to control a given device, such as trailer brakes,

from either of two control sources.

Figure 4 (see page 2) illustrates a typical use of a double

check valve to supply air to a system or systems from either

of two separate sources, whichever is at the greater pressure

level. In this type of installation the pressure differential to

which the valve is subjected may under certain conditions

be minimal. It is therefore suggested that performance of

the double check valve will be optimized if it is mounted in

the horizontal position.

DESCRIPTION

Double check valves are used in an air brake system to

direct a flow of air into a common line from either of two

sources, whichever is at the higher pressure. They may be

used for directing air flow for specific functions or to select

the higher pressure of either of two sources of air as a

supply source.

Bendix manufactures two types of double check valves:

shuttle and disc. Although the valves are somewhat different

physically, the same function is performed by both types.

The difference in the design of the two valves is that the

shuttle type has a movable shuttle to seal off the lower

pressure source, whereas the disc type has a movable disc.

Bendix

Double Check Valves

FIGURE 1 - DC-4

™

DOUBLE CHECK VALVE (SHUTTLE TYPE)

FIGURE 2 - DOUBLE CHECK VALVE (DISC TYPE)

DELIVERY

SUPPLY

SHUTTLE

GUIDE

BODY

O-RING

SUPPLY

DELIVERY

SHUTTLE

VALVE

DISC

VALVE

GUIDE

BODY

CAP

O-RING

DELIVERY

SUPPLY

CAP

1 2 3 4

Résumé du contenu

Page 1 - Double Check Valves

1SD-03-2202OPERATIONAs air under pressure enters either end of the double checkvalve (inlet port) the moving shuttle or disc responds to thepressure a

Page 2 - SERVICE CHECKS

2ReservoirBrake ValveTrailer HandControl ValveSERVICE CHECKSOPERATING AND LEAKAGE TESTA. When the double check valve is used in conjunction witha trai

Page 3 - PERSONAL INJURY OR DEATH:

3CLEANING AND INSPECTION1. Clean all metal parts in mineral spirits and dry themcompletely.2. Inspect all parts for excessive wear or deterioration.In

Page 4

Commentaires sur ces manuels

Pas de commentaire

BENDIX BW1582 Manuel d'utilisateur

Naviguer en ligne ou télécharger Manuel d'utilisateur pour Système de soudage BENDIX BW1582. BENDIX BW1582 User's Manual Manuel d'utilisatio

Résumé du contenu

Commentaires sur ces manuels

Produits connexes et manuels pour Système de soudage BENDIX BW1582