pumps?

[chimpboy]

Can someone tell me what the numbers on a pump stand for ie 15-50, 25-50 ect. cheers

 

[glasgowgas]

Can someone tell me what the numbers on a pump stand for ie 15-50, 25-50 ect. cheers

the first number denotes the pipe size, the second number denotes flowrate

tin hat on, i know a 15/50 is on 22mm pipe take it up with Grundfoss!!

 

[Superconnect]

Can someone tell me what the numbers on a pump stand for ie 15-50, 25-50 ect. cheers

the first number denotes the pipe size, the second number denotes flowrate

tin hat on, i know a 15/50 is on 22mm pipe take it up with Grundfoss!!

Hi, could you explain this a bit more? I want to replace a 15-50 pump, which is on 22mm pipe.
So should I change to 25-50? The pump dimensions are identical, so it would be a straight swap. Will it reduce flow noise, or should I stay with the same bore?

 

[doitall]

The first number is the head 15 = 5m 16 = 6m, and the second number is the flow rate, how much water it shifts.

 

[picasso]

different from me , the 15 in a 15-50 denotes the pipe diameter of the inlets and the 50 is the head in centimeters.

 

[doitall]

different from me , the 15 in a 15-50 denotes the pipe diameter of the inlets and the 50 is the head in centimeters.

Back to school picasso

 

[Boilerman2]

I'm with picasso, the Second number IS THE HEAD i.e /50= 5Mtr
/60= 6 Mtr, the 15/ or 25/ mean jack sh*t, if you look at Grundfos domestic Branded pumps, they generally start 15/, but take a loook at an Identical manufacturer's branded i.e. Worcester, Grant etc etc they are usually 25/

 

[Biggles..]

have to agree with the others that first number is the port size.

 

[Norcon]

The first number is the head 15 = 5m 16 = 6m, and the second number is the flow rate, how much water it shifts.

Back to school Doitall.

 

[doitall]

Can someone tell me what the numbers on a pump stand for ie 15-50, 25-50 ect. cheers

the first number denotes the pipe size, the second number denotes flowrate

tin hat on, i know a 15/50 is on 22mm pipe take it up with Grundfoss!!

Don't tell me you think it's the pipe size as well

lcgs got it right, the rest are still trying

 

[picasso]

now its getting confusing, if lcgs is right with the first number being the port size then the second number must be the head, which is what I said in the first place

 

[Hugh Jaleak]

Second number equates to the maximum working head of the pump I think, 15-50 up to 5m, the 15-60 up to 6m.

 

[Norcon]

Don't tell me you think it's the pipe size as well

I don't believe anyone posting on this thread thinks its the pipe size but the first number is certainly not the head and the second the flowrate as you incorrectly suggest.

 

[doitall]

now its getting confusing, if lcgs is right with the first number being the port size then the second number must be the head, which is what I said in the first place

You said pipe size, not port size.

Sorry but you're all wrong anyway.

 

[doitall]

Don't tell me you think it's the pipe size as well

I don't believe anyone posting on this thread thinks its the pipe size but the first number is certainly not the head and the second the flowrate as you incorrectly suggest.

It's getting silly now.

The numbers are ft height and Ltrs/sec.