32
O-Ring Material Selection Table
Material Temperature
Range °F
D to K Orifice
L to T Orifice
Set
Pressure
(psig)
Durometer
(Shore A)
Set
Pressure
(psig)
Durometer
(Shore A)
Viton
4
-20 to 450
15 to 100
50
15 to 150
50
-20 to 450
101 to 650
75
150 to 450
75
-20 to 125
650 to 950
75
450 to 750
75
125 to 450
90
90
-20 to 450 950 to 1500
90
750 to
1500
90
Ethylene
Propylene
0 to 350
15 to 100
50
15 to 150
50
0 to 350
101 to 650
70
150 to 450
70
0 to 125
650 to 950
70
450 to 750
70
125 to 350
80
80
0 to 350
950 to 1500
80
750 to
1500
80
Buna N
0 to 200
15 to 100
50
15 to 100
50
0 to 200
101 to 650
70
100 to 450
70
0 to 125
650 to 950
70
150 to 750
70
125 to 200
90
90
0 to 200
950 to 1500
90
750 to
1500
90
Silicone
-150 to 450
15 to 100
50
15 to 100
50
-150 to 0
101 to 600
50
100 to 200
50
0 to 450
70
70
-150 to 450 600 to 850
70
200 to 450
70
-150 to 125
850 to 1100
70
450 to 750
70
125 to 450
80
80
-150 to 450
1100 to
1500
80
750 to
1500
80
Kalrez
-20 to 550
15 to 200
65
15 to 150
65
-20 to 550
201 to 650
80
150 to 450
80
-20 to 200
650 to 950
80
450 to 750
80
200 to 550
90
90
-20 to 550 950 to 1500
90
750 to
1500
90
Neoprene
-45 to 300
50 to 750
70
50 to 750
70
-45 to 300 751 to 1500
80
751 to
1500
80
Allen Key Sizes
Disc Holder Lock Screw
Orifices
Allen Key Size
D thru K
1/8"
L thru U
See Table 6.1
O-Ring Seat Construction
Assembly/Disassembly Instructions
The following instructions are assembly instructions. For disassembly,
reverse the order. Parts identification can be found on page 31. Follow the
same procedures as for conventional type valves except as follows:
To connect the
Disc Holder
to the
Stem Retainer
for O-ring valves, use
the allen key sizes found in Table C.1
For D and E orifice (Bellows Construction only)(See Figure C.1):
1. Place the
O-ring
in the
Disc Holder
groove.
2. Thread the
Disc
into the
Disc Holder/Stem Retainer
.
For orifices D and E (Conventional) through K only (See Figure C.1):
1. Place the
O-ring
in the
Disc Holder
groove.
2. Place the
Disc
into the
Disc Holder
.
3. Thread the
Flat Head Machine Screw
through the
Disc
into
the
Disc Holder
.
For orifices L through U only (See Figure C.2)
1. Place
Disc
in a vice with soft jaws or in a 3-jaw chuck. Be careful not to
hold too tight as the
Disc
can be damaged.
2. Place the
O-ring
into the
Disc
groove.
3. Place the
O-ring Retainer
on the
Disc
.
4. Thread the
Flat Head Machine Screws
through the
O-ring
Retainer
into the
Disc
.
5. Thread the
Jack Screw Plug
into the
O-ring Retainer
.
6. Thread the
Disc
into the
Disc Holder
(ensure the
Disc
is free floating).
General Notes:
1. Viton and Kalrez are registered trademarks of DuPont Performance Elastomers.
We reserve the right to substitute comparable fluorocarbon materials.
2. PTFE seat seals available on an application basis. Consult the factory
Table C.1
Summary of Contents for 2600 Series
Page 1: ...0713T R0 Series 2600 Maintenance Manual ...
Page 47: ...47 Notes ...
