3 valve construction – Val-Matic Tilted Disc Check Valve User Manual
Page 4

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