can pipe dope be used or Teflon fkr threads?

Can be used but not recommended and not needed. This is just a vent to allow water to drain.

Can this be used outdoor?

[I'm not a plumber.] But, I don't see why it couldn't be used outside. The seals might be more prone to wear if exposed to the weather.

What is the dfu rating?

From their website: “174020 - 2" Dual-Seal 20 AAV maximum DFU rating Individual and Branch 10 DFU, Stack 12 DFU”

can you just screw it on or is teflon tape required to seal the pipe threads?

a little tape never hurts but not necessary.

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🛠️ Seal the deal with TUUBER: Twice the protection, zero compromise.

COMPACT COMPATIBLE - Precision 2" NPT threads fit standard schedule 40 pipes for seamless integration.
UNRIVALED SEAL SECURITY - Dual gravity-closed seals lock out sewer gases and odors with 2x superior protection.
WHISPER QUIET OPERATION - Engineered for sound-attenuated open and close cycles, maintaining a peaceful environment.
BUILT TO LAST WITH CONFIDENCE - Backed by a limited lifetime warranty and ASSE 1050/1051 compliance for professional-grade reliability.
EFFORTLESS VENTING EFFICIENCY - Triple flow passage design ensures smooth air admittance, preventing trap siphonage and pressure issues.

The TUUBER 2-inch Vent H2 Air Admittance Valve features patented dual sealing technology delivering twice the sealing power to prevent sewer gas escape. Designed for 2" schedule 40 pipes with 2" NPT threads, it offers a triple flow passage for efficient air admittance and sound-attenuated operation. Certified to ASSE 1050 and 1051 standards, this valve is a compact, reliable solution for venting branch, stack, and pump waste systems, backed by a limited lifetime warranty.

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¥12334

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TrustScore 4.5 | 7,300+ reviews

Ayesha M.

The product exactly matches the description. Very satisfied with my purchase.

5 days ago

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Smooth transaction and product arrived in perfect condition.

3 weeks ago

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Manufacturer	TUUBER
Part number	H2-020-AAV
Item Weight	82 g
Product Dimensions	7.62 x 7.62 x 7.11 cm; 82 g
Item model number	H2-020-AAV
Size	2 Inch
Color	White
Measurement System	inch
Specification met	ASSE
Batteries Included?	No
Batteries Required?	No

TUUBER 2-inch Vent 2X Superior Seal Air Admittance Valve

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