521N Brass Check Valve - BUNA-N Seat

Valve Catalog

521N Brass Check Valve - BUNA-N Seat

• 200 WOG
• Cast Brass Body
• Swing Type
• 180°F Working Temperature
• BUNA-N Seat
• Threaded Ends Comply w/ ANSI B2.1
• Valves Tested in Accordance w/ MSS-SP-82
• Sizes 3/8" - 4"

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Material Specifications

No. Part Material
1 Name Plate Aluminum A1100
2 Cap Brass B584 C85710
3 Packing Fibre “H”
4 Disc Holder Brass B584 C85710
5 Seat Packing BUNA-N
6 Washer Brass B584 C85710
7 Seat Nut Brass B124 C37700
8 Body Brass B584 C85710
9 Bolt Brass B16 C36000
10 Pin Brass B124 C37700

Dimensions

Part # Size H L Weight (lbs)
521N02 3/8” 1.42 2.09 0.39
521N03 1/2” 1.42 2.09 0.42
521N04 3/4” 1.56 2.36 0.55
521N05 1” 1.77 2.62 0.75
521N06 1-1/4” 2.07 3.19 1.34
521N07 1-1/2” 2.17 3.55 1.69
521N08 2” 2.74 4.22 2.64
521N09 2-1/2” 3.09 5.14 4.80
521N10 3” 3.80 5.77 6.87
521N11 4” 4.26 6.84 11.36
 

 

 

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