Will this work properly on pex, or does it need to be clipped on copper pipe?

Plastic is an insulator, so it does not transfer heat well. It may work, but not as designed. Why not replace a segment of the PEX tubing with a copper fitting? You would have better results.

Does the Aquastat connect directly to leads dedicated "aquastat" leads on the pump or is it in line with the main power supply to the pump?

It connects in-line with the main power, there is no relay or other switching at a lower voltage than the line (110V) voltage.

My timer has gone bad in my pump. Can I use this to replace the timer? Makes sense to me.

Depending on the application and required temp range needed. If the temp drops enough to allow the contacts to close and start the pump, and opens when the high temp is reached stopping the pump. The location, and temp range of the aqua stat may be very critical to proper operation.

We have a single circulator pump located on the return loop. Don't I want the circulator pump to operate until the water goes below a set temperature?

yes, this thermostat is "closed" until the temperature reaches 105 then it opens , the pump stops and when the temperature drops to 85 degrees it closes again to let the pump run.

Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

Help Track order

Account Cart

Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

Help Track order

Account Cart

Grundfos 595444 3/4 Clip On Uastat Trol 595444

Product ID: 328391585

Details

Brand
Grundfos
Colour
Black
Material
Stainless
Product dimensions
20.3L x 17.3W
Style
Circulator

🔧3/4-inch clip-on mount

⏲️Compatible with timer control

🌡️Temp range 85-105°F

430.38 DT

Duties & taxes included

In stock

Sold byAmazon TunisiaDelivered 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 Tunisia.

Secure transaction

Description

🌡️ Stay in control, stay ahead—heat smarter, not harder!

EFFORTLESS INSTALLATION - Clip-on design fits 3/4-inch pipes—no hassle, no downtime
ENERGY SAVING AUTOMATION - Prevents overheating by shutting off circulator, reducing energy waste and extending system life
SMART TIMER COMPATIBILITY - Seamlessly integrates with timer controls for customized heating schedules
DURABLE STAINLESS STEEL BUILD - Engineered for longevity and reliable performance in demanding HVAC systems
PRECISION TEMPERATURE CONTROL - Automatically toggles circulator between 85°F and 105°F for optimal heating efficiency

The Grundfos 595444 3/4-Inch Clip-On Aquastat is a precision temperature control device designed for hot water lines and heating systems. It automatically switches the circulator off when temperatures exceed 105°F and back on below 85°F, ensuring efficient and safe operation. Its clip-on mounting fits standard 3/4-inch pipes and it can be used standalone or with timer controls, making it a versatile, durable, and energy-saving addition to any HVAC setup.

Specifications

ASIN	B0029P2WY6
ASIN	B0029P2WY6
Brand Name	Grundfos
Color	Black
Customer Reviews	4.3 4.3 out of 5 stars (78)
Customer reviews	4.3 4.3 out of 5 stars (78)
Date First Available	11 August 2013
Global Trade Identification Number	00632514046061
Is Discontinued By Manufacturer	No
Item Dimensions L x W x H	20.3L x 17.3W x 1.5H centimeters
Item Weight	68 g
Item model number	595444
Manufacturer	Grundfos
Manufacturer	Grundfos
Manufacturer Part Number	595444
Material Type	Stainless Steel
Model Number	595444
Number of Items	1
Power Source	Ac/dc
Product Dimensions	20.32 x 17.27 x 1.52 cm; 68.04 g
Product Style	Circulator
Specific Uses For Product	Heating systems, hot water lines
UPC	632514046061
Unit Count	1.0 Count

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

Anjali K.

The product quality is outstanding. Exactly what I needed for my work.

1 month ago

Ravi S.

I loved the variety of products available. Will definitely shop again.

2 months 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.

430.38 DT

Duties & taxes included

In stock

Sold byAmazon TunisiaDelivered 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 Tunisia.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Neha S.

Excellent communication throughout the order process. Product is perfect.

2 weeks ago

Reema J.

Perfect platform for hard-to-find items. Delivery was prompt.

1 month ago

View all Trustpilot reviews