Instructions / Assembly

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as to its accuracy and assumes no liability arising out of its use. The data listed falls within the normal range
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LCS 420C 10/12
AAV
Vented
House
Traditional
Vented
House
For Island Sinks & Bathrooms
Allows Air into the Plumbing System - Contains
Foul Odors
U.S. Patent 6,415,816
and others pending
EVERY DRAIN NEEDS A TRAP.
EVERY TRAP NEEDS A VENT.
To prevent sewer gases from being released into the
structure, plumbing code requires a trap to be installed at
every fixture. A trap is a U-shaped bend of pipe filled with
water that acts as a barrier between the structure and the
sewer system. Trap seals can only be compromised under
two conditions — high sewer pressures and water siphons,
in both cases vents prevent this from happening.
Under high sewer pressures without a vent, trap seals will
allow sewer gases to escape and enter the structure. This
happens when the sewer pressure is greater than the
pressure from the column of water in the trap. A vent will
keep the sewer and atmospheric pressures equalized to
maintain the trap seal.
Water moving through pipes can create a negative pressure
or a siphon. The siphon will pull the water from a trap,
leaving a clear path for sewer gases to enter the structure.
A vent will prohibit siphoning, maintaining the trap seal.
WHY USE A SURE-VENT
®
AIR ADMITTANCE VALVE?
Air Admittance Valves (AAVs) open and close in conjunction
with normal DWV system operation, effectively eliminating
the need for secondary vent pipes. An AAV provides an
alternative to secondary venting when utilized within the
scope of model plumbing codes, referenced standards and
Oatey installation instructions.
AAVs provide the ideal venting solution for island sinks,
remote bathroom groups and remodeling jobs by eliminating
the need to tie into a stack vent.
AAVs are often more economical than running vent pipe in
new construction because they reduce the added need for
supplies and labor.
The Oatey Sure-Vent
®
offers UNMATCHED PERFORMANCE by
opening and closing under the smallest pressures, multiple
sizes for OPTIMIZED DFUs and SUPERIOR SEALING
technology, providing a lifetime of reliability.
Engineering Specification:
The purpose of an air admittance valve is to provide a method of allowing air to enter the plumbing system without
the use of a vent extended to open air and to prevent sewer gases from escaping inside a building.
FEATURES
- Four vents rated at 6, 20, 160 and 500 DFUs for optimized installations
- Sweet Spot
TM
technology opens at -0.01 psi (-0.25” H
2
O) and seals at
0 psi and above
- Screening on air inlets to guard the seal
- Protective rubber sleeve provides grip for installation and keeps valve
free from debris
- 100% functionally tested at 0.25" water and 30" water ensuring
trouble-free performance
- Limited Lifetime Warranty
LISTINGS
- ASSE 1050 & 1051 (Rev. 2002)
- NES NER-670
- NSF Standard 14
- IAPMO – Classified Mark
- ASTM D2661/D2665/F409
CODE APPROVALS
- International Plumbing Code (IPC) 2003
- International Residential Code (IRC) 2003
- Uniform Plumbing Code (UPC) 2003 – Section 301.2
INSTALLATION
Read installation instructions prior to use of this product. Always consult
local plumbing codes prior to installing an AAV. Individual, branch and circuit
vents are permitted to terminate with a connection to a Sure-Vent
®
AAV. The
Sure-Vent
®
AAV will only vent fixtures that are on the same floor level and
connect to a horizontal branch drain. The horizontal branch drain shall
connect to the drainage stack a maximum of four branch intervals from the
top of the stack. The Sure-Vent
®
AAV should be located within the maximum
developed length permitted for the vent. The Sure-Vent
®
AAV must be
located a minimum of 4 inches above the horizontal branch drain and 6
inches above any insulation material and within 15 degrees of vertical. Every
structure in which plumbing is installed shall have at least one primary stack
vent. The stack vent should run as directly as possible from the building
drain through to the open air.
Use approved pipe joint compound on the threads of the valve and remove
protective orange rubber sleeve after installation.
Sure-Vent
®
AAVs are intended for installation in the confines of a structure,
cannot be exposed to outside elements and are intended for use between
-40°F and 150°F. AAVs must be accessible for inspection and service.
SURE-VENT
®
AIR ADMITTANCE VALVES
AIR
ADMITTANCE
VALVES
No New Roof Penetrations!
TECHNICAL SPECIFICATIONS
Plumbing Drain, Waste and Vent systems, known as DWV, consist of the DRAIN pipes that provide
a network for the removal of WASTE and the VENT pipes that prevent traps from siphoning and
maintain an equalized pressure. The DWV system uses gravity and air displacement throughout
the piping network to function and breathe. In a simplified example, water in an inverted bottle
without an air hole will glug and gasp when emptied. Adding an opening to the bottom of the
bottle will turn the process into an efficient, steady flow because the bottle “breathes.”
AAVtrifold_LCS420C_101812.indd 1 10/18/12 9:45 AM