Is this NSF 61 approved for drinking water?

The valve itself does not have a NSF 61 certified.

Would this work with thin walled pvc for sewer? specifically d2729 pvc pipe for drain applications?

The Valterra 4" 6401 valve is made for Schedule 40 pvc pipe.

I need two monday anyway to get them shipped asap?

We would be unable to ship until Monday

Can the shaft be extended? I see valterra has a extension handle for gate valves, which one will work on the 6401 knife gate valve?

Yes, we do have extension rods for the 4" valve. The part numbers depend on the length you are looking for. For example we have the X4-12, which is a 12" extension rod for the 6401 valve. We also have an X4-24, X4-36, X4-48.

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Description

🚀 Slide into seamless flow control with Valterra’s stainless steel precision!

EFFORTLESS FLOW CONTROL - Full port design guarantees unrestricted flow for quick shut-off in low pressure systems.
USER FRIENDLY MAINTENANCE - Bolted assembly and removable handle make repairs and replacements hassle-free.
VERSATILE APPLICATION READY - Ideal for koi ponds, slurry, aquaculture, and sewer lines with reliable low-pressure performance.
DURABLE STAINLESS STEEL CORE - 304 stainless steel paddle and shaft ensure long-lasting corrosion resistance and strength.
CHEMICAL CORROSION RESISTANT - PVC body and TPV seals withstand mild chemicals and harsh environments with ease.

The Valterra 4" PVC Gate Valve features a robust 304 stainless steel shaft and paddle combined with a corrosion-resistant PVC body, designed for low pressure and vacuum applications up to 15 psi. Its full port opening ensures unrestricted flow, while the bolted assembly allows for easy maintenance. Perfect for aquaculture, slurry ponds, and sewer lines, this valve offers reliable, quick shut-off with durable materials built to withstand mild chemicals and harsh environments.

Specifications

Material	PVC
Brand	Valterra
Item dimensions L x W x H	13.15 x 6.65 x 5.2 inches
Exterior Finish	Aluminum,Stainless Steel
Inlet Connection Size	4 Inches
Inlet Connection Type	Chlorinated Polyvinyl Chloride
Outlet Connection Type	Slip
Maximum Operating Pressure	15 Pound per Square Inch
Number of Ports	40
Outlet Connection Size	8 Inches
Specification Met	MSS SP-70
Global Trade Identification Number	00019079640109
Manufacturer	Valterra
UPC	019079640109
Part Number	6401
Item Weight	4.02 pounds
Product Dimensions	13.15 x 6.65 x 5.2 inches
Item model number	6401
Is Discontinued By Manufacturer	No
Size	4 Inch
Color	White
Style	Slip
Item Package Quantity	1
Included Components	Gate Valve
Batteries Included?	No
Batteries Required?	No

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