WATTS 3/4" 9D-M2 Backflow Preventer w/ Atmospheric Vent

Description

This is pre-owned, but never used, it is still in new condition.  IF there should be any extra packages with rubber rings or anything, they are not included.  I don't think this comes with anything like that, I didn't see anything like that in pictures on Watts website except in their repair kit.  The description details provided below are taken directly from the Watts website to ensure accuracy of information provided for you to review.
This 3/4 inch dual check valve backflow preventer with atmospheric vent prevents the reverse flow of hot or cold polluted water from entering into the potable water supply. This valve is designed for continuous pressure non-health hazard applications in smaller supply lines, such as laboratory equipment, processing tanks, sterilizers, dairy equipment, and specifically for boiler feed lines. It consists of a brass body with stainless steel internal parts, integral strainer, two durable tight seating rubber check valves, and NPT female inlet and outlet connections.
Features
Compact design
Stainless steel internal parts
Forged brass body for durability
Horizontal or vertical installation
Specifications:
Backflow Preventer Type
Dual Check with Atmospheric Vent
Body Finish
Brass
Body Material
Brass
Body Pattern
Inline
Brand
Watts
Buy American Act Compliant
YES
Bypass
No
Cap And Tether
No
Disc Material
Rubber
EAN
098268004281
Elbow Fitting
No
Hazard Protection Level
Non Health Hazard
Hot And Harsh Water
No
Hydrant Connection
No
Inlet Connection Size
3/4 IN
Inlet Connection Size-Metric
20 MM
Inlet Connection Type
Union Female Threaded
Inlet Shutoff Valve Type
No Shutoff Valve
Inlet Thread Type
NPT
Lead Free
NO
Maximum Temperature-Fahrenheit
250
Maximum Working Pressure-BAR
12.1
Maximum Working Pressure-PSI
175
Meter Type
No Meter
Minimum Temperature - Celsius
0.5
Minimum Temperature-Fahrenheit
33
Outlet Connection Size
3/4 IN
Outlet Connection Type
Union Joint
Outlet Shutoff Valve Type
No Shutoff Valve
Outlet Thread Type
NPT
Part Number
61888
Polymer Coating
No
Pressure Operation
Continuous
Protection Type
Backpressure and Backsiphonage
Seat Material
Rubber
Series
9D
Strainer
Yes