A-520/A-522/A-522A, Rev. 3.0
Page 4 of 28
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2 Introduction
The A-520, A-522, and A-522A 4” Bottom-Outlet Ball Valves offer greater resistance to abrasion. They also reduce the
chance of leakage caused by particle contamination in harsh applications.
• Low and standard profiles available
• Available in carbon steel or stainless steel
• Updated sealing surfaces to reduce torque requirements
Component Identification and Parts Listings
ITEM QTY DESCRIPTION
A-520-C1-CS A-520-C1-MO
PART NO. MATERIAL PART NO. MATERIAL
1 1 CAP 520-112-CS STEEL 520-112-MO STAINLESS STEEL
2 1 STEM 520-2-SS STAINLESS STEEL 520-2-SS STAINLESS STEEL
3 1 BALL 520-3-MO STAINLESS STEEL 520-3-MO STAINLESS STEEL
4 1 BODY 520-45-CS STEEL 520-45-MO STAINLESS STEEL
5 1 PACKING 520-5-01-TF VIRGIN TEFLON
®
520-5-01-TF VIRGIN TEFLON
®
6 1 SPACER 520-6-SS STAINLESS STEEL 520-6-SS STAINLESS STEEL
7 1 PIN 520-7-CS STEEL 520-7-CS STEEL
8 1 STOP PLATE 520-8-CS STEEL PLATED 520-8-CS STEEL PLATED
9 8
CAP SCREW, HEX-SOCKET,
5/8”-11 UNC-2A X 1”LG
520-9-CS STEEL 520-9-CS STEEL
10 2 SEAL, BALL SEE TABLE SEE TABLE SEE TABLE SEE TABLE
11 1 SEAL, VALVE BODY 520-11-01-TF VIRGIN TEFLON
®
520-11-01-TF VIRGIN TEFLON
®
12 1 WASHER, THRUST 520-12-01-TF VIRGIN TEFLON
®
520-12-01-TF VIRGIN TEFLON
®
13 1
LOCKNUT HEX THIN,
1-1/8”-12 UNF, NY. INSERT
520-13-CS STEEL PLATED 520-13-CS STEEL PLATED
14 1 NAME PLATE 520-14-SS STAINLESS STEEL 520-14-SS STAINLESS STEEL
Table 2-1 A-520-C1 Component Parts Listing
VALVE MODEL NO.
SEAL, BALL
PART NO. SEAL MATERIAL SEAL MATERIAL SUFFIX
A-520-C1-CS 520-10-01-TF VIRGIN TEFLON
®
PTFE
A-520-C1-MO 520-10-01-TF VIRGIN TEFLON
®
PTFE
A-520-C1-CS-ST 510-10-04-ST 316-SS FILLED TEFLON
®
ST
A-520-C1-MO-ST 510-10-04-ST 316-SS FILLED TEFLON
®
ST
Table 2-2 A-520-C1 Ball Seal Parts Listing
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