looking to pump water from a rain barrel at ground level to flush toilets on 2nd floor of home. will this do the job

Overkill, you don't need that much power.

Can this pump irrigate 3.4'' pipe at 300' at 25' rise?

Not recommended.The GT15 pump has a 1-1/2" discharge. Designed for large volume flow.Reducing to 3/4" creates WAY TOO much back pressure for this pump. (Back pressure creates HIGH Total Dynamic Head - TDH)In your scenario, Let's say your irrigation system requires a flow rate of 15 GPM @ 35 psi @ 300 ft away from pump Running 15 GPM thru 3/4" pipe for 300 ft = ~130 ft TDH (Pressure Loss = 56 psi)Plus the 25 ft rise (Pressure loss = 11 psi)And let say you want 35 psi (Higher PSI = Higher TDH) = ~80 ft TDH (Pressure Loss 35 psi)That said, you would need a pump that can operate upwards of 235 TDH (Pressure loss to overcome = 102 psi)The GT15 has a MAX TDH of ~120 ft TDH (or ~ 52 psi) Don't use this pump for your system...it will not work.

is it possible to over-work this pump by not having enough sprinklers in a zone?

No the problem on pumps is typically when you over flow them (too many sprinklers) and the motor draws more amps. Also cycling the motor on/off is not good for the motor life.

I’m replacing a sta-rite ds3hf-01 1.5hp, would this be the correct replacement pump?

Yes these have similar pump curves.

Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

Help Track order

Account Cart

Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

Help Track order

Account Cart

Goulds Water Technology Cast Iron 1/2 HP Centrifugal Pump 115/230V 2BF40512-1 Each

Goulds Water Technology Cast Iron 1/2 HP Centrifugal Pump 115/230V 2BF40512-1 Each

Product ID: 12743148

Details

Brand
Goulds
Color
Blue
Item Weight
37 pounds
Material
BUNA Cast Iron
Maximum Flow Rate
64 gpm
Maximum Lifting Height
25 feet

💧Up to 110 GPM flow rate

⚙️1.5 hp robust motor

🛡️Corrosion & abrasion resistant

¥277388

Duties & taxes included

In stock

Sold byAmazon JapanDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Japan.

Secure transaction

Description

💧 Pump up your irrigation game with unstoppable power and durability!

BUILT TO LAST - Cast iron casing with electro-coat paint for unbeatable corrosion resistance
FDA GRADE DURABILITY - Food-grade, abrasion-resistant impeller and diffuser for premium reliability
CONTINUOUS POWERHOUSE - 1.5 hp motor engineered for nonstop operation with built-in overload protection
EFFORTLESS SELF PRIMING - Starts strong every time with water reprise up to 25 ft suction lift
SERVICE FRIENDLY DESIGN - Back pull-out and two-compartment motor for quick maintenance without pipe disruption

The GOULDS GT15 IRRI-Gator is a 1.5 hp self-priming centrifugal pump delivering up to 110 GPM flow and 25 ft suction lift. Featuring FDA-compliant, corrosion-resistant materials and a service-friendly back pull-out design, it’s engineered for continuous, reliable irrigation and water transfer with minimal maintenance.

Specifications

ASIN	B00S2C34E2
Best Sellers Rank	#75,252 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #4 in Centrifugal Pumps #161 in Power Water Pumps
Brand Name	Goulds
Color	Blue
Customer Reviews	4.4 4.4 out of 5 stars (491)
Flow Rate	64 gpm
Global Trade Identification Number	00697666117120
Horsepower	1.5
Included Components	1 - GT15
Item Dimensions L x W x H	22"L x 9"W x 10"H
Item Type Name	GOULDS PUMPS GT15
Item Weight	37 pounds
Manufacturer	Goulds Water Technology
Manufacturer Part Number	GT15
Material Type	BUNA Elastomers, Cast Iron, Stainless Steel, carbon, ceramic
Maximum Lifting Height	25 feet
Model Number	2BF40512
Number of Items	1
Power Source	Ac
Product Style	Above Ground
Specific Uses For Product	Lawn sprinkling, Irrigation, Air conditioning systems, Heat pumps, Water transfer, Dewatering
UPC	697666117120 094700753489
Unit Count	1 Count
Voltage	230 volts

Common Questions

Are the products genuine and authentic?+

Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

How long does delivery take and is it reliable?+

Delivery times vary by destination country, typically ranging from 3-9 business days. Each order is fully trackable through our system. We handle all customs clearance and use reliable courier partners for last-mile delivery. You'll receive regular updates about your order status via email and our app.

What is Desertcart? Is it safe to order from?+

Desertcart is an international e-commerce platform operating since 2014. We securely process thousands of orders globally each day. Every product goes through our quality verification process before delivery, and we provide end-to-end order tracking, 24/7 customer support, and a comprehensive returns policy to ensure a safe shopping experience.

How is product pricing calculated?+

Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Imran F.

Very reliable shop with genuine products. Will definitely buy again!

2 weeks ago

Meera L.

Smooth transaction and product arrived in perfect condition.

3 weeks ago

View all Trustpilot reviews

Shop Global, Save with Desertcart

Value for Money

Competitive prices on a vast range of products

Shop Globally

Serving millions of shoppers across more than 100 countries

Enhanced Protection

Trusted payment options loved by worldwide shoppers

Customer Assurance

Trusted payment options loved by worldwide shoppers.

Desertcart App

Shop on the go, anytime, anywhere.

¥277388

Duties & taxes included

In stock

Sold byAmazon JapanDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Japan.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Zainab N.

Fantastic and great service. Shipping was faster than expected.

1 week ago

Suresh K.

Very impressed with the quality and fast delivery. Will shop here again.

4 days ago

View all Trustpilot reviews