Fillable VR20 Vacuum Relief Valve cation Sheet Speci

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VR20 Vacuum Relief Valve cation Sheet Speci

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• Prevents internal vacuum conditions
Guards against siphonage, burnt-out heaters and collapsing of storage tanks and negative
pressure.
• Opens quickly in emergency situations
Opens on a one inch mercury vacuum.
• Listed by CSA
Inspector friendly, peace of mind.
• Every valve is tested for performance prior to shipping
Specify and install with condence
Specications
A vacuum relief valve shall be installed to protect the pressure vessel. The valve
shall be CSA certied per ANSI Z21.22/CSA 4.4 and NSF/ANSI 372. The valve shall be
constructed of brass with an integral body seat disc. The valve shall open on a one-inch
mercury vacuum. The valve shall be a Cash Acme VR20 Vacuum Relief Valve.
Product Submittal
Name
Date
Architect/Owner
Contractor
Tag
Notes
CA_VR20_V01 • Date issued9/21/20
US Contact: 1.877.700.4242 • sales@sharkbite.com • sharkbite.com
Canadian Contact 1.888.820.0120 • canadasales@rwc.com • sharkbite.ca
VR20 Vacuum Relief Valve
Speci
cation Sheet
Description
The Cash Acme VR20 Vacuum Relief Valve is designed to protect hot water supply
systems and pressure vessels against negative pressure. It is especially well suited
for many domestic and commercial systems.
It works by preventing internal vacuum conditions that could result in burned-out
heaters and/or collapsed storage tanks – especially copper.
Installed on the cold water supply line, the Cash Acme VR20 closes tightly under
pressure and opens at a 1" mercury vacuum. The atmosphere admitted to the system
breaks the vacuum, preventing the collapse of the storage tank. It is recommended that
the VR20 be installed in an upright position.
The Cash Acme VR20 is lead free¹, available in 1/2" and 3/4" sizes and with male
inlets. The VR20 also features a low prole design with a slotted vent hole. The vent
hole is protected by a circular dust cover that is approx.1.75" in diameter. This valve
features an all-brass body and body cap, a heat-resistant silicone seat disc, an integral
body seat, and brass internal working parts.
Features And Benets
VR20
with
Dust
Cover
Specication Data
Performance:
Service
...................................................................... Water
Relief pressure (open)
...................................... 1" Hg vacuum
Internal Parts
........................................................ 13 SCFM (@ 2" Hg)
Maximum pressure
............................................. 210°F
Maximum inlet pressure
................................... 200 psi
Materials
Body
.......................................................................... Lead-Free DZR Brass
Cap
............................................................................ Lead-Free DZR Brass
Spring
....................................................................... Stainless steel
Seat Disc
................................................................. Silicone
Dust Cover
.............................................................. Polypropylene
Guide Rod
............................................................... Brass
Washer
..................................................................... Brass
Seat Shell................................................................ Lead-Free DZR Brass
O-ring........................................................................ Buna-N
For all models, surfaces that are in contact with consumable water contain less than 0.25% lead by weight.
Available Connections
Model Size Part Number
VR20 1/2" 22397LF
VR20 3/4" 22398LF
Codes & Standards
The Cash Acme VR20 Relief Valve is certied to ANSI Z21.22/CSA 4.4 and
NSF/ANSI 372 and is listed by CSA.
Typical Installation
It is recommended that the VR be installed in an upright position. For further installation
information, please contact the factory.
US Contact: 1.877.700.4242 • sales@sharkbite.com • sharkbite.com
Canadian Contact 1.888.820.0120 • canadasales@rwc.com • sharkbite.ca
Cash Acme VR20
B
A
Dimensions (inches) A B
1/2"
1 3/8 2 5/16
3/4"
1 3/8 2 5/16
T&P
Valve
Cold
Hot
Tank
VR20
Vacuum
Relief
1-3/4"
B
2-1/2"
VR20
Dimensions
with
Dust
Cover
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Completed 30 August 2021

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