Page 120 - DixonCatalog20092010

118

DPL410

877.963.4966 • www.dixonvalve.com

E

Air

Check Valve in

Open Position

Check Valve in

Closed Position

Flow Direction

NPT and Hose

ID Size

Part # Cut-off Flow Rate

(SCFM at 90 PSI)

Price/E NPT and Hose

ID Size

Part # Cut-off Flow Rate

(SCFM at 90 PSI)

Price/E

1/4"

3/8"

1/2"

3/4"

1"

SCVL2

SCVM3

SCVS3

SCVM4

SCVS4

SCVL6

SCVM6

SCVR6

SCVJ6

SCVS6

SCVH6

SCVL8

SCVM8

SCVS8

SCVH8

23-29

39-47

52-65

70-78

80-96

72-88

92-108

112-128

132-148

160-180

180-200

165-195

220-260

280-320

310-340

$53.00

49.71

53.38

84.48

95.55

1-1/4"

1-1/2"

2"

3"

SCVL10

SCVM10

SCVS10

SCVH10

SCVL12

SCVM12

SCVS12

SCVH12

SCVL16

SCVM16

SCVS16

SCVH16

SCVL24

SCVS24

SCVH24

260-290

300-340

440-500

570-630

300-360

470-530

640-720

750-830

510-590

725-825

900-1050

1100-1200

1200-1400

2400-2700

2850-3050

$197.37

197.37

331.06

452.02

1919.63

Features:

•

high flow valve to provide optimum performance

•

controls excess air flow (SCFM) in only one direction

•

automatically senses change in air flow and shuts off the flow in the event of a surge in excess of valve flow rating thus

preventing hose whip

•

conforms to OSHA regulation 1926.302 (b) (7) requiring a safety device at the source of the air supply and at branch air lines

•

applications include temporary plant/factory air, construction sites, shipyards or utilities

•

not for use in applications where 100% of the available air is required, i.e. sand blast, pile driving rigs,expansion joint blow

down pipes, etc.

•

does not prevent backflow

Construction:

•

solid brass body and valve

•

stainless steel spring and roll pin

•

maximum working pressure:

250 PSI

•

maximum temperature:

250°F

Use:

•

Safety check valves operate by using the pressure differential across the valve to operate the valve and spring assembly. The

pressure differential is directly related to the flow of air (SCFM) through the valve.

•

When the pressure differential is within the operating limits - below the cutoff flow - of the unit, the force on the valve exerted

by the spring is greater than that caused by the pressure differential (see "Open Position" graphic above). The valve remains

open and normal operation continues.

•

When the pressure differential is above the cutoff limit, the force on the valve exerted by the pressure differential is greater

than the force exerted by the spring, and the valve closes (see the "Closed Position" graphic above).

•

After the repair is made, normal operation is automatically enabled when pressure across the valve equalizes through the

bleeder hole.

•

The valve spring size can be specified by determining the air flow during normal operation and by estimating the air flow if a

failure or rupture occurs.