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Old 08-13-2008, 06:00 PM   #1
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Default SS ball valve

I am certain all of the valves below will work for a keggle BUT what do their differences amount to. I see some have a higher PSI(not necessary) but what does full and stnd port mean? What does 1 piece vs 2 piece mean? The one for 9.99 is currently out of stock but seems like the best deal to me. Thanks for any input, Charlie

1/2" SS 1PC 1000 Ball Valve Price: $12.67
FNPT by FNPT Threaded Ends, 1-Piece Body, Standard-Port, 1000 PSI rated, Stainless Steel Body, Teflon Seals and Seats.

1/2" SS 2PC 1000PSI Full-Port Ball Valve Price: $14.29
FNPT by FNPT Threaded Ends, 2-Piece Body, Full-Port, 1000 PSI rated, Stainless Steel Body with lockable handle, Teflon Seals and Seats.

1/2" SS 2PC 2000 Standard-Port Ball Valve Price: $9.99
FNPT by FNPT Threaded Ends, 2-Piece Body, 2000 PSI rated, Stainless Steel Body, Teflon Seals and Seats. Includes handle lock.

1/2" SS 2PC 2000 Full-Port Ball Valve Price: $15.17
FNPT by FNPT Threaded Ends, 2-Piece Full-Port Design with lockable handle, 2000 PSI rated, Stainless Steel Body, Teflon Seals, Graphite Seats.

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Old 08-13-2008, 06:07 PM   #2
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There are four general body styles of ball valves: single body, split body, top entry, and welded.

There are four general types of ball valves: full port, standard port, reduced port, and v port.

A full port ball valve has an over sized ball so that the hole in the ball is the same size as the pipeline resulting in lower friction loss. Flow is unrestricted, but the valve is larger.

A standard port ball valve is usually less expensive, but has a smaller ball and a correspondingly smaller port. Flow through this valve is one pipe size smaller than the valve's pipe size resulting in slightly restricted flow.
In reduced port ball valves, flow through the valve is one pipe size smaller than the valve's pipe size resulting in restricted flow.

A v port ball valve has either a 'v' shaped ball or a 'v' shaped seat. This allows the orifice to be opened and closed in a more controlled manner with a closer to linear flow characteristic. When the valve is in the closed position and opening is commenced the small end of the 'v' is opened first allowing stable flow control during this stage. This type of design requires a generally more robust construction due to higher velocities of the fluids, which would quickly damage a standard valve.

A trunnion ball valve has a mechanical means of anchoring the ball at the top and the bottom, this design is usually applied on larger and higher pressure valves(say 4" and above 600 psi and above)
Manually operated ball valves can be closed quickly and thus there is a danger of water hammer. Some ball valves are equipped with an actuator that may be pneumatically or motor (electric) operated. These valves can be used either for on/off or flow control. A pneumatic flow control valve is also equipped with a positioner which transforms the control signal into actuator position and valve opening accordingly
.

god bless wikipedia

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Old 08-13-2008, 06:35 PM   #3
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Those look like good prices. Where did you find them?

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Old 08-13-2008, 07:28 PM   #4
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Thanks Monty

3dogsNE
found them here(free shipping)
http://www.discovervalve.com/

So which valves are preferred by us Or does it really matter? Seeing how most of us are cheap I gotta think the 9.99 model

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