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Round and Square Dump Valves on the Same Truck
I have seen quite a few tankers with round dumps on the side and square dumps on the rear. I was wondering why this is being done? Why not put square on the sides also?
Replies to This Discussion
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Permalink Reply by united 289..{Dave} on
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The way the body is built. It easer to put the rounds on the sides. While some is even telescopic.
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Permalink Reply by T.J. on
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I must say I've never seen dumps on the side of a tanker (tender). Can you upload a pic so I can see one? Thanks TJ
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Permalink Reply by LT Lake on
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It's all in who built it. I have seen both round and square side dump as seen in the photos below.
TCSS
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Thanks LT for the pics, I've only seen square and round out of the rear, never the side but that's awesome.
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It sure makes it a lot easier if you can position the dump tank so your tanker can pull up next to it, dump its load then drive away never having to back up.
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Permalink Reply by FETC on
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I am not a truck builder, one ones I have seen the round do not extend, (we had to place a round extension pipe everytime we dumped on an old tanker and the square dumps telescope out so you can get it into the porta-tank with ease.
Our tanker has three telescoping square 10" JET dumps, they work off a remote cab switch. It is behind the chrome cover between the rear duallies.
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I agree with you 100%, and I'll check into why we dont have any of these yet.
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Permalink Reply by Just Plain Craig Moyer on
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The square and round are two different animals. The square is for quick large, very large disacharges only. The round side are for large discharge into a hose line. We don't have a tanker but I've been involved in them in PA quite often. You back into the dump tank on the ground, pull a lever and dump the tank and load on the side from a draft engine. Watching a good operation run is a thing of beauty. I've seen two alarm fires run off of two dump tanks about 2000 gallons each, 6 tankers and 2 engines at the draft site and never get below 80% full.
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Craig, please expound on your comment that "the round side are for a large discharge into a hose line?"
Do you mean pumping off the tank water? So look at the photo provided by Lt Lake (top one) and explain how the water gets in a hose line from that large round dump discharge?
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Permalink Reply by Bendone on
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Thank For the Replies. I guess what I still don't understand is if a square dump will dump faster than a round one why would you put a round one on the side instead of a square one?
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Permalink Reply by Jenny Holderby on
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The round dumps on the side are tank valves that either open all the way & let the water flow out by force OR you hook a hose up to it & pump the water out. I have never seen square hoses. The square dumps on the back are quick dumps, you pull the lever, open the valve & the water comes pouring out. They are square because it is easier to retro-fit, seal & work than a round shape.
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Patents, manufacturers choice and it also depends what you spec when you build a new tanker - tender apparatus.
Jenny, I have been around a long time and never seen anyone hook onto the round dumps and suck the water out. If you have a pic of this operation please enlighten me... we are not talking about the steamer connection.
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