CVI SDX Manual

Procurar online ou descarregar pdf Manual para Unidade de controlo CVI SDX. CVI SDX 7 páginas. Single disc external spring check valve

SINGLE DISC EXTERNAL SPRING CHECK VALVE

The Champion Valves, Inc. ("CVI") SDX Check valve is a self-operating check valve designed to prevent

the backflow of gas or liquid media. Initial opening of the valve's discs begins when the upstream

pressure exceeds the downstream pressure and the effective torque of the spring. This pressure is

called the "cracking" pressure. Once the SDX disc opens, flow velocity determines the position and

stability of the disc.

If the flow velocity upstream of the valve decreases and/or stops, the spring forces the disc to a closed

position. Ideally, the disc will be fully closed just prior to flow reversal, thus alleviating the potential for

water hammer.

LIMITATIONS AND PRECAUTIONS

SDX check valves are not recommended for the following service conditions.

•

Pulsating flows

•

Installation directly to a butterfly valve or other piping accessory that may interfere with the

opening or closing of the SDX disc

•

Vertical Flow DOWN without prior Factory Approval

The following precautions should be taken to insure long service life of SDX Check valves.

•

Accurate sizing of single disc check valves is crucial to ensure an acceptable pressure drop and a

long service life.

•

Flow velocities should be in the following ranges:

MEDIA

Liquid

Gas

MODEL SDX

APPLICATION AND OPERATION

FLOW RATE

3 to 11 feet/second

.91 to 3.35 m/second

20 to 250 feet/second

6.1 to 76.2 m/second

P.O. B

12901, WILMINGTON, NC 28405

: 910-794-5547 - F

HONE

EBSITE

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