Ive read that gate valves should be used to regulate flow. can you do the same with ball valves. Is there a certain GPH to where you can use ball valves without worry of bubbles etc. what is the advantage of gate over ball in lines that pump less than 800 gph??
Valves: Ball or Gate
- Thread starter simike
- Start date
scarf_ace1981
Advanced Reefer
- Location
- San Juan, PR
i use a ball valve on my return. wish i could help you further but i'm not very smart w/ plumbing.
- Location
- Wallingford, CT
Gate valves just gives you a more precise tuning mechanism for controlling the flow.
Ball valves will work in almost every application that you will need in this hobby.
Ball valves will work in almost every application that you will need in this hobby.
- Location
- Howell, NJ
i feel that the gate valves are a better way to go... as pecan said more precise....
- Location
- Howell, NJ
Deanos said:Please do...I spent extra money to get a gate valve for my skimmer instead of a ball valve.
deanos funny u said that cause i did the same thing 2....:iamwithst :lol2:
- Location
- 11756
:iamwithstDeanos said:Please do...I spent extra money to get a gate valve for my skimmer instead of a ball valve.
Me too. Tried 'em both the gate valve is 100x's more precise in tuning a skimmer or any flow for that matter.
Ball valves are just to stiff to be able to make a tiny change in the amount of water exiting or entering. With a gate valve you can make those tiny increases or decreases. Maybe you have the two confused?
OK ,,for more precise tuning a gate valve will work better .....the way it works is when turning the handle it slowly brings down the gate type vavle (basiclly a hair at a time ) i dont think it get better then that
Ball valves are simple better to shut off thing ,thats it
It works this way ..you have a ball in the valve (cut in half ) basiclly whe nyou turn the valve ,you are closing it in 2 places in the vavle that does not give you that precise tuning ,only reason ,if you trun the valve you never know how much you are acually reducing.( or closing the valve )
so if you wanted to close a gate valve you have to turn the handle at least 10 times
where the ball valve closes in half a turn not to mention that it will break with the calcium ans salt build up
Ball valves are simple better to shut off thing ,thats it
It works this way ..you have a ball in the valve (cut in half ) basiclly whe nyou turn the valve ,you are closing it in 2 places in the vavle that does not give you that precise tuning ,only reason ,if you trun the valve you never know how much you are acually reducing.( or closing the valve )
so if you wanted to close a gate valve you have to turn the handle at least 10 times
where the ball valve closes in half a turn not to mention that it will break with the calcium ans salt build up
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http://www.cheresources.com/valvezz.shtml
Best Suited Control: Quick Opening
Recommended Uses:
1. Fully open/closed, non-throttling
2. Infrequent operation
3. Minimal fluid trapping in line
Applications: Oil, gas, air, slurries, heavy liquids, steam, noncondensing gases, and corrosive liquids
Advantages: Disadvantages:
1. High capacity 1. Poor control
2. Tight shutoff 2. Cavitate at low pressure drops
3. Low cost 3. Cannot be used for throttling
4. Little resistance to flow
Globe Valves
Best Suited Control: Linear and Equal percentage
Recommended Uses:
1. Throttling service/flow regulation
2. Frequent operation
Applications: Liquids, vapors, gases, corrosive substances, slurries
Advantages: Disadvantages:
1. Efficient throttling 1. High pressure drop
2. Accurate flow control 2. More expensive than other valves
3. Available in multiple ports
Ball Valves
Best Suited Control: Quick opening, linear
Recommended Uses:
1. Fully open/closed, limited-throttling
2. Higher temperature fluids
Applications: Most liquids, high temperatures, slurries
Advantages: Disadvantages:
1. Low cost 1. Poor throttling characteristics
2. High capacity 2. Prone to cavitation
3. Low leakage and maint.
4. Tight sealing with low torque
Butterfly Valves
Best Suited Control: Linear, Equal percentage
Recommended Uses:
1. Fully open/closed or throttling services
2. Frequent operation
3. Minimal fluid trapping in line
Applications: Liquids, gases, slurries, liquids with suspended solids
Advantages: Disadvantages:
1. Low cost and maint. 1. High torque required for control
2. High capacity 2. Prone to cavitation at lower flows
3. Good flow control
4. Low pressure drop
Gate Valves
Recommended Uses:
1. Fully open/closed, non-throttling
2. Infrequent operation
3. Minimal fluid trapping in line
Applications: Oil, gas, air, slurries, heavy liquids, steam, noncondensing gases, and corrosive liquids
Advantages: Disadvantages:
1. High capacity 1. Poor control
2. Tight shutoff 2. Cavitate at low pressure drops
3. Low cost 3. Cannot be used for throttling
4. Little resistance to flow
Globe Valves
Recommended Uses:
1. Throttling service/flow regulation
2. Frequent operation
Applications: Liquids, vapors, gases, corrosive substances, slurries
Advantages: Disadvantages:
1. Efficient throttling 1. High pressure drop
2. Accurate flow control 2. More expensive than other valves
3. Available in multiple ports
Ball Valves
Recommended Uses:
1. Fully open/closed, limited-throttling
2. Higher temperature fluids
Applications: Most liquids, high temperatures, slurries
Advantages: Disadvantages:
1. Low cost 1. Poor throttling characteristics
2. High capacity 2. Prone to cavitation
3. Low leakage and maint.
4. Tight sealing with low torque
Butterfly Valves
Recommended Uses:
1. Fully open/closed or throttling services
2. Frequent operation
3. Minimal fluid trapping in line
Applications: Liquids, gases, slurries, liquids with suspended solids
Advantages: Disadvantages:
1. Low cost and maint. 1. High torque required for control
2. High capacity 2. Prone to cavitation at lower flows
3. Good flow control
4. Low pressure drop
- Location
- Howell, NJ
:lol2:
This is from plumbingsupply.com
"I can't find a listing for PVC gate valves. Do you offer them as well?"
Because our goal is for 99% customer satisfaction we do not wish to sell PVC gate valves. They are not as reliable as PVC ball valves and they tend to break easily due to their shaft being plastic as well. If you "insist" on (or must have) a gate valve then we highly recommend purchasing a top quality brass gate valve (which we do offer and do recommend).
- Location
- Howell, NJ
we use em for our tanks not a :tank: or submarine. most gate valves dont get touched to much because of there in tune dialing.. i have my gate valve on a skimmer and its been great and reliable.. it all depends on what the intentions are for... but for fine tuning a skimmer i prefer a gate valve....
i think ronen said it well if your looking for an on and off kind of thing then ball valve is the way to go but u can do the fine tuning like a gate valve...
ohh yea brass is a no no with saltwater...
i think ronen said it well if your looking for an on and off kind of thing then ball valve is the way to go but u can do the fine tuning like a gate valve...
ohh yea brass is a no no with saltwater...
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TimberTDI said:This is from plumbingsupply.com
"I can't find a listing for PVC gate valves. Do you offer them as well?"
Because our goal is for 99% customer satisfaction we do not wish to sell PVC gate valves. They are not as reliable as PVC ball valves and they tend to break easily due to their shaft being plastic as well. If you "insist" on (or must have) a gate valve then we highly recommend purchasing a top quality brass gate valve (which we do offer and do recommend).
LOL..I read that. We weren't discussing reliability, but flow control. If you want to put a brass gate valve on your tank, go ahead, but I don't think that's a good idea.
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