Will this fit over 3" cast iron to the bell/socket of 3" s40 backwater valve? Or is there another option that will work better?

This fitting is made to fit over 3" sch 40 pipe and over bell end of 3" fitting. Inside measurements of fitting are 3.5" and 4 " . Most 3 " cast is just under 3.5" OD. This fitting should work

Will this work for 3" copper to 3" pvc?

No it is made to go from 3" pipe to the socket of a 3" fitting. A regular 3" in fernco will tighten down enough to join 3" copper to 3" pvc sch 40

This coupling looks to big a little bigger on 1 end(which is what I need). What are the inner diameters on both ends please?

The smaller end is 3.5 inch I.D. and the bigger end is 4 inch I.D. , the smaller end fits over 3 inch sch. 40 PVC pipe and the bigger end fits over the bell end of a 3 inch sch. 40 fitting

What is the id of this? is it 3 inches? thanks

The inside diameter fits over a 3" PVC pipe perfectly.

Desertcart Logo

Deliver to Greece

For best experience Get the App

DOWNLOAD THE APP

WE SOURCE ITEMS FROM

UAE
UK
India
USA
Japan
KOREA

Customer Services

About Us

Customer Support

Description

🔧 Connect with confidence—flexibility and durability that keep your pipes ahead of the curve!

TRUSTED AMERICAN CRAFTSMANSHIP - Proudly made in the USA since 1964, delivering unmatched quality and reliability.
CERTIFIED PERFORMANCE STANDARDS - Meets ASTM D5926 and C1173 for guaranteed plumbing code compliance.
EFFORTLESS NO MESS INSTALLATION - Skip primers and glues—install with just a screwdriver for a clean, hassle-free fit.
PREMIUM CORROSION RESISTANT CLAMPS - 300 stainless steel clamps ensure rustproof durability and quick, secure fastening.
BUILT TO WITHSTAND SHIFTS VIBRATIONS - Flexible design absorbs ground movement, protecting your plumbing from stress and damage.

The Fernco P1059-33 is a 3-inch flexible PVC coupling designed for plastic socket to pipe plumbing connections. Made from elastomeric polyvinyl chloride, it offers superior chemical and sewer gas resistance. Featuring 300 stainless steel clamps, it ensures corrosion resistance and easy installation without messy adhesives. Proudly manufactured in the USA, it meets ASTM D5926 and C1173 standards, making it a trusted choice for durable, flexible, and code-compliant plumbing solutions.

Specifications

Size	3 Inch
Material	Polyvinyl Chloride, Stainless Steel
Brand	Fernco
Color	Black
Item dimensions L x W x H	5 x 5 x 4 inches
Connector Type	Coupling
Thread Size	3 inch
Exterior Finish	Black
Thread Type	NPT
Item Weight	0.01 Ounces
Number of Pieces	1
Global Trade Identification Number	00018578000568
Manufacturer	Fernco Inc.
UPC	018578000568
Part Number	P1059-33
Item Weight	0.01 ounces
Product Dimensions	5 x 5 x 4 inches
Item model number	P1059-33
Shape	shape
Item Package Quantity	1
Measurement System	English
Included Components	Fernco P1059-33 Flexible PVC Coupling
Batteries Included?	No
Batteries Required?	No
Warranty Description	Warranty

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.