Question 1

Do i need to use a threaded pipe on the discharge hole or any 1 1/2 pvc pipe (sched 40) will work?

Accepted Answer

Yes1) You will need a  threaded pvc adapter.  The threaded end fit the pump and glue 1 1/2" pvc pipe into the other end 2) Drill a small hole as per instructions on the vertical rise so the pump doesn't airlock3) I would also install a one way valve (check valve) on the vertical rise about $10 or so at Menards..........they are rubber and connected with hose clamps.Should work finethank youBill Sparks

Question 2

I'm replacing it and it says to drill a 1/8 inch hole on the extraction pipe but my existing one does not have one, do I still need one?

Accepted Answer

The pump itself has airlock protection built in, but nonetheless the instruction manual does still recommend a 1/8" hole be drilled (not far from the pump discharge) to prevent airlock, IF a check valve is being used (most modern sump pump installations do utilize check valves to prevent back-flow). For my particular installation, I do use a check valve so I drilled the 1/8" hole about 1" above the pump discharge on the PVC pipe. Haven't had any issues.

Question 3

Whatst the difference between this pump and 257-2?  https://www.amazon.com/gp/product/b0057gu6tm?pf_rd_p=c2945051-950f-485c-b4df-15aac5223b10&pf_rd_r=

Accepted Answer

Cord length. The standard cord is 10 feet long. The pumps with -2 have a 25' long cord. -3 pumps have a 35' cord. -5 pumps have a 50' cord.

Question 4

I'm having switch issues with my "Z" 53 1/3HP pump so I talked to a Liberty rep today about sizing and he calculated everything and said that I am right at the middle of a 1/3HP (257) and a 1/2HP (287). He went on to say that both will have a tendency to "short cycle" in my situation (not a ton of water other than "100…

Accepted Answer

No way to answer without knowing how many feet of head you have.  If "a long way" means 15-20' then go for the 1/2 hp.  Up to 10' a 1/3 hp is plenty.

If it short cycles it will wear out sooner and leave you unprotected from a flood, so bigger is not always better.

ASIN	B001PTT5JM
Brand Name	Liberty Pumps
Colour	Gray
Customer Reviews	4.6 4.6 out of 5 stars (663)
Flow Rate	50 Gallons Per Minute
Global Trade Identification Number	00671812002577
Horsepower	0.33
Included Components	pump
Item Dimensions L x W x H	24.4L x 24.4W x 26.7H Centimeters
Item Type Name	pump
Item Weight	6.9 kg
Manufacturer	Liberty Pumps
Manufacturer Part Number	257
Manufacturer Warranty Description	Liberty Pumps, Inc. warrants that pumps and other products of its manufacture are free from all factory defects in material and workmanship for a period of 2 years from the date of purchase.
Material Type	Cast Iron
Maximum Lifting Height	21 Feet
Model Number	257
Number of Items	1
Number of Packs	1
Power Source	Corded Electric
Product Style	Submersible
Specific Uses For Product	Basement flooding, Crawlspace water removal, Rainy conditions
UPC	671812002577
Unit Count	1.0 Count
Voltage	115 Volts

Liberty Pumps 257 1/3-Horse Power 1-1/2-Inch Discharge 250-Series Cast Iron Automatic Submersible Sump/Effluent Pump with VMF Switch

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