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The three basic functions of valves are:1. to stop flow,2. to keep a constant direction of flow, and3. to regulate the flow rate and pressure.

VALVES TYPES AND FUNCTIONS

Globe ValveCheck 

Gate ValveButterf

Valve shaped like abutterfly.

Tight shut-off and can beused as a control valve.

ittle resistance to flow!allows s"ooth flow#.

$pti"al for auto"atedoperation with a lowoperating tor%ue and &'degrees operating angle.

ightweight and co"pact!large dia"eter "odels arealso available#

The globe-shaped bodycontrols the fluid into a (shaped flow.

Tight shut-off and can beused as a control valve.

arge resistance to flow!does not allow s"oothflow#.

)uch power is re%uired open and close the valv!not suitable for largesi*es#

+or use when flow is onlyinone direction.

ightweight disc allowsvertical installation.

igh operating speed

ike its na"e i"plies, thegate is lowered to cut offthe path of flow.

+or use as an onoff valve!not suitable as a controlvalve#.

ittle resistance to flowwhen fully open !allowss"ooth flow#.

ong stroke re%uires ti"e toopen and close not suitablefor %uick operation

Ball Valve

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Valve stopper is ball-shaped.

+or use as an onoff valve !not suitable as a control valve#.

ittle resistance to flow when fully open !allows s"ooth flow#.

$pti"al for auto"ated operation with a &' degrees operatingangle.

 /dvanced technology is re%uired to "anufacture ball.

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Valves and Plumbing Fixtures

PLATE #o( 2

 3o-hua 4(Navallo

BSCE V5/6

CEBLDGCONST

2PLUMBING FIXTURES

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-  / device or vessel that is per"anently or te"porarily installed in a co""ercial

facility, residence, hospital, school etc. and "aybe connected to the potable

water syste". That device discharges used water and suspended solids into the

facility sewer line. 0ot all plu"bing fitures have a water connection but all "ust

be able to re"ove drainage away fro" the device via the sanitary syste". )ost

ti"es you can use the water that is supplied to the fiture for drinking, bathing,cooking etc.

-  /ll plu"bing fitures "ust be "ade of a s"ooth, non-corrosive, non-absorbent

"aterial. These "aterials are naturally anti-"icrobial and pro"ote easy cleaning.

PLU4BING FI7TU!ES

Bath Tub

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B9,et

 Lavator

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Sho'er

Ur9#al

8ater Clo-et