Manual

3
VALVE CONSTRUCTION
The standard Tilted Disc Check valve is ruggedly
constructed of cast iron. See the specific Materials
List submitted for the order if other than standard
iron construction. The internal metal components
are aluminum bronze or stainless steel. The pivot
pins (4) are fixed in the body (1) and support the
disc (3). Grease fittings (23) are provided to allow
regular lubrication of the pivot pin. The general
details of construction are illustrated in Figure 2.
The body is flanged to connect to a pipe flange. The
body consists of a pivot body half (1) and a seat
pivot half (2). The seat (11) is held in place by the
two body halves. Top and bottom inspection hole
covers (13) are provided for servicing the valves and
to allow installation of dashpots. Do not remove the
inspection covers while the pipeline is under
pressure or the cover may release pressure
suddenly.
Figure 2. Basic Valve Construction
WARNING
Removal of inspection covers without draining
the pipeline and valve may cause serious
injury.
Part No. Part Name Material Part No. Part Name Material
1 Pivot Body Half Cast or Ductile Iron 16 Pivot Pin Cover Cast Iron
2 Seat Body Half Cast or Ductile Iron 17* Pivot Pin Cover Gasket Non-Asbestos
3 Disc Cast or Ductile Iron 18 Pivot Pin Cover Bolt Alloy Steel
4* Pivot Pin Alum. Brz. 19 Indicator Pin (>6”) Stainless Steel
5* Pivot Pin Bushing (>12”) Alum. Brz. 20 Indicator Shaft Assy (>6”) Stainless Steel
6* Body Seal Buna-N 21 Indicator Washer (>6”) Stainless Steel
7 Body Flange Bolt Alloy Steel 22 Indicator Pointer (>6”) Carbon Steel
8 Disc Ring (>12”) Alum. Brz. 23* Grease Fitting Stainless Steel
9 Ring Seal (>12”) Buna-N 24* Indicator O-rings (>6”) Buna-N
10 Seat Ring Alum. Brz. 25 Lock Washer (>6”) Stainless Steel
11 Seat Ring Seal Buna-N 26 Indicator Jam Nut (>6”) Stainless Steel
12 Ring Ret. Screw (>12”) Stainless Steel 27 Locating Pins Plated Steel
13 Inspection Cover (>6”) Cast Iron
14 Cover Bolt (>6”) Alloy Steel
15* Gasket (>6”) Non-Asbestos
*Recommended Spare Part