Can this be used in under a normal vanity in a house?

Yes. That's exactly where I used it due to space constraints. Couldn't fit a normal P- trap. Works great.

Will this equalize grey tank pressure like a vent? Building campervan and can’t easily vent tank outside.

All this is a trap for your shower or sink, not a vent. It is like P trap under your sink or shower to keep odors coming back up sink. I used one under my shower where I have no room for a P-trap.

Does this have a check valve inside or what method does it use to prevent backflow? What does the interior look like and how much pressure is needed?

Yes, it a check valve, there is a soft tube inside that goes flat and stops on back flow.

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Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

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BV1B/UA Hepvo Waterless Waste Valve 1-1/4"

Product ID: 24213862

Details

Brand
All Season
Exterior Finish
painted
Inlet Connection Size
8 Inches
Inlet Connection Type
National Pipe
Item dimensions L x W x H
8 x 8 x 8
Material
Stainless

💧Waterless self-sealing membrane

🔇No gurgling noises

🚫No foul odors

¥20139

Duties & taxes included

In stock

Sold byAmazon JapanDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🚿 Upgrade your plumbing game—ditch the trap, embrace the future!

ODOR FREE LIVING - Eliminates sewer air escape for a fresher home environment
SILENT OPERATION - No more embarrassing gurgling sounds disrupting your peace
PRESSURE BALANCED - Automatically equalizes air pressure, removing the need for secondary venting
DURABLE STAINLESS STEEL - Built to last with corrosion-resistant materials for long-term reliability
WATERLESS SEAL TECHNOLOGY - Innovative membrane replaces traditional water traps—no evaporation or freezing risks

The BV1B/UA HepvO Waterless Waste Valve is a cutting-edge plumbing solution that replaces traditional water-seal traps with a self-sealing membrane, preventing foul sewer odors and eliminating gurgling noises. Designed with durable stainless steel and advanced pressure balancing, it ensures hygienic, silent, and maintenance-free waste flow without the risk of evaporation or freezing, making secondary venting obsolete.

Specifications

ASIN	B004A2YFG4
Best Sellers Rank	#109,019 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #123 in Faucet Valves
Brand Name	All Season Marketing
Connector Type	Trap
Customer Reviews	4.5 4.5 out of 5 stars (212)
Exterior Finish	painted
Global Trade Identification Number	05027888240354
Included Components	All Season Marketing BV1B/UA Hepvo Waterless Waste Valve 1-1/4"
Inlet Connection Size	8 Inches
Inlet Connection Type	National Pipe Tapered
Item Dimensions	8 x 8 x 8 inches
Item Type Name	All Season Marketing BV1B/UA Hepvo Waterless Waste Valve 1-1/4"
Item Weight	0.22 Kilograms
Manufacturer	HEPVO
Manufacturer Part Number	BV1BUA114
Material Type	Stainless Steel
Model Number	BV1B/UA
Number of Ports	2
Outlet Connection Size	8 Inches
Outlet Connection Type	FNPT
Size	1.25 inches
Smart Home Compatibility	Not Smart Home Compatible
Specification Met	ULC
Thread Size	1.25 inches
Thread Type	FNPT, National Pipe Tapered
Unit Count	1 Count
Valve Type	Hepvo Waterless Waste Valve

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