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SPEARS Backwater Valve, 4 in, Socket, PVC, 43 psi CWP, Extension Kit Included - Backwater Valves
SPEARSBackwater Valves

SPEARS Backwater Valve, 4 in, Socket, PVC, 43 psi CWP, Extension Kit Included

The SPEARS Backwater Valve is a 4-inch pipe size backwater valve with a socket connection type, constructed from PVC. It has a maximum pressure rating of 43 psi (CWP) and includes an extension kit. This product is…

SKU 3G-OTH-436084

Also listed as: S475PAK · S475P AK

Brand
SPEARS
Item
Backwater Valve, 4 in, Socket, PVC, 43 psi CWP, Extension Kit Included
Part Number
S475P-AK
Category
Backwater Valves
Available to Order
Also known as:S475P-AKSPEARS
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Local availability & support — Singapore

Local office
20 Woodlands Link #09-05, Singapore 738733
Phone
+65 8878 8355
Payment
Invoicing in SGD. PayNow, bank transfer, and corporate PO accepted.

Technical Specifications

SPEARS
Manufacturer Part Number
S475P-AK
Type
Socket, PVC, PVC
Connection Type
Socket
Max. Pressure (CWP)
43 psi
Includes Extension Kit
Extension Kit Included

Technical Documents

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SPEARS Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The SPEARS Backwater Valve is a 4-inch pipe size backwater valve with a socket connection type, constructed from PVC. It has a maximum pressure rating of 43 psi (CWP) and includes an extension kit. This product is identified by manufacturer part number S475P-AK.

Frequently Asked Questions

What is the SPEARS Backwater Valve used for?

The SPEARS Backwater Valve prevents sewage or stormwater from flowing backward into a building during heavy rain or system overloads. It is commonly installed in residential or commercial drainage systems to protect basements and lower levels from flooding and contamination.

What are the specifications of the SPEARS Backwater Valve?

The SPEARS Backwater Valve has a 4-inch pipe size with a socket connection type, made from PVC. It is rated for a maximum pressure of 43 psi (CWP) and includes an extension kit. The manufacturer part number is S475P-AK.

Where to buy the SPEARS Backwater Valve worldwide?

3G Electric supplies the SPEARS Backwater Valve worldwide. As a global industrial equipment distributor, we handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time on this PVC backwater valve.

How to install a SPEARS Backwater Valve?

Install the SPEARS Backwater Valve in a horizontal section of the drain pipe, ensuring the flow arrow points downstream. Use solvent cement for PVC socket connections. The included extension kit allows access to the valve cover from above grade. Always follow local plumbing codes.

Used in

Common applications for SPEARS
Chemical processing — Spears slip-socket expansion joints with EPDM bulb for thermal expansion in corrosive fluid lines
Water treatment — Spears PVC non-rising stem gate valves with socket connections for on/off flow control
Industrial piping — Spears FIPS threaded gate valves for general-purpose shutoff in water and chemical service
Pharmaceutical production — Spears PVC gate valves with polypropylene wedge for high-purity fluid handling
Power generation — Spears expansion joints for absorbing vibration and thermal movement in cooling water systems
Food and beverage — Spears PVC gate valves with socket ends for sanitary and utility water applications
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SPEARS Products

3G Electric supplies SPEARS backwater valves. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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