Two Piece Tilting Disc Check Valves


Ordering Number System

     8"        132½        XU        9
Valve Size   Basic catalog number defined on data pages   Suffix denoting trim material   Suffix denoting basic valve material

Seating Trim Description

Cat. No. Suffix Seating Surfaces
U Hard Facing (1)
X 13% Chromium (2)
XU 13% Chromium to Hard Facing (2)
L Austenitic (3) Stainless Steel
LU Austenitic Stainless Steel to Hard Facing
A Monel
AU Monel to Hard Facing

Body Materials

Crane Designation Cat. No. Suffix ASTM Spec. Material Classification
Carbon Steel None A216 Gr. WCB Carbon Steel
No. 5 Steel 5 A217 Gr. C5 5% Cr, ½% Mo
No. 7 Steel 7 A217 Gr. WC6 1¼% Cr, ½% Mo
No. 9 Steel 9 A217 Gr. WC9 2¼% Cr, 1% Mo
“LCB” Steel 2 A352-LCB Low Carbon Steel
“Arctic” Steel 3 A352-LC3 3½% Nickel Steel

  1. Hard Facing is weld deposited Cobalt base alloy.
  2. 13% Chromium AISI Type 410 Stainless Steel.
  3. Austenitic Stainless Steel is a Ni-Cr-Mo stainless steel in the AISI Type 316 category.

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