EXW Singapore — collect or forward from our Singapore office.

3G Electric
SPEARS 4 in PVC Socket Backwater Valve, 43 psi CWP, S475P - Backwater Valves
SPEARSBackwater Valves

SPEARS 4 in PVC Socket Backwater Valve, 43 psi CWP, S475P

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 is identified by manufacturer part number…

SKU 3G-OTH-436085

Brand
SPEARS
Item
4 in PVC Socket Backwater Valve, 43 psi CWP, S475P
Part Number
S475P
Category
Backwater Valves
Available to Order
Also known as:S475PSPEARS
Trade pricing by quote — replies within 24h
Qty
WhatsApp an engineerMessage via Telegram
No account needed — your quote request goes straight to our engineers. A free account lets you track quotes and re-order faster.
EXW Singapore
Collect or forward from our office
Datasheet on Request
Technical specs
1-Day Quote
Replies within 24h

Local availability & support

Payment
Invoicing in USD. Bank transfer (SWIFT) and corporate PO accepted.

Technical Specifications

SPEARS
Manufacturer Part Number
S475P
Type
Socket, PVC, PVC
Connection Type
Socket
Max. Pressure (CWP)
43 psi
Includes Extension Kit
No Extension Kit

Technical Documents

No technical documents available for this product.
Request documentation →
Not sure this is the right part? Get a recommendation.

Need installation or engineering help?

Installation, commissioning, maintenance plans, system design, and bundled product + service quotes — one team handles the full scope.
Talk to an engineer

Ask a question

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 is identified by manufacturer part number S475P. This valve does not include an extension kit.

Frequently Asked Questions

What is the SPEARS Backwater Valve used for?

The SPEARS Backwater Valve is used in drainage and sewer systems to prevent reverse flow of wastewater into buildings. It is commonly installed in residential and commercial plumbing applications where backflow protection is required, helping to avoid flooding and contamination during heavy rain or sewer surcharges.

What are the specifications of the SPEARS Backwater Valve S475P?

The SPEARS Backwater Valve S475P has a 4-inch pipe size with a socket connection type. It is constructed from PVC and rated for a maximum pressure of 43 psi (CWP). This model does not include an extension kit. The manufacturer part number is S475P.

Where to buy the SPEARS Backwater Valve worldwide?

3G Electric supplies the SPEARS Backwater Valve S475P to customers worldwide. As a global industrial equipment distributor, we handle full logistics, customs clearance, and delivery to your location. Contact us for availability and to place an order for this PVC backwater valve.

How to install a SPEARS Backwater Valve?

Install the SPEARS Backwater Valve in the drainage line with the flow arrow pointing away from the building. Use PVC solvent cement on socket connections and ensure the valve is accessible for maintenance. Follow local plumbing codes and allow proper curing time before testing the system.

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
Not sure this is the right part? Photo-identify it→

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.

You might also need

Burners & Combustion →Pumps & Compressors →Spare Parts →All Products →

More from SPEARS

View all SPEARS parts →

Customer reviews

No reviews yet — be the first

Questions & answers

No questions yet — ask us the first