Material Identification - Samson 3241-7 Mounting And Operating Instructions

Material identification

14. Mount the actuator and adjust the upper
and lower range values as described in
section 2.1.
Nominal sizes DN 50 to DN 150
5. Remove screw (3.4) with its locking de-
vice and washer (3.3). Replace collar
(3.1).
6. Insert washer (3.3). Thread down the
screw (3.4) with its locking device.
7. Apply lubricant (order no. 8150-0111)
to the packing parts, plug stem (6) and
contact faces of the collar (3.1).
8. Insert the plug stem and plug into the
valve bonnet.
4
Complete reassembly as described for
DN 40, steps 10 to 14.
Nominal sizes DN 200 to DN 300:
5. Remove the screw (3.4) with its locking
device.
6. Lift off the ring (3.3) and replace collar
or seal (3.1).
7. Insert ring (3.3). Thread down screw
(3.4) and its locking device.
8. Apply lubricant (order no. 8150-0111)
to the packing parts, plug stem (6) and
contact faces of the collar (3.1).
9. Insert the plug stem and plug into the
valve bonnet.
4
Complete reassembly as described for
DN 40, steps 10 to 14.
18
EB 8015 EN
6 Material identification
The trim material of older valves is indicated
by an identification mark on the guide bush-
ings, seat and plug as described below.
A detailed trim material identification has
been introduced using a seat code on the
nameplate. Refer to section 7 (pos. 13,
MExx).
6.1 Identification marks
Guide bushing (groove on plane face)
4
No groove: 1.4305
4
Sharp recessed groove: 1.4571
4
Flat recessed groove: Hastelloy
Seat
The material number according to DIN is ei-
ther stamped or engraved on the seat.
4
Stellited seats are marked by a stam-
ped-on "st".
Plug
Groove below the plug stem thread:
4
No groove: 1.4006
4
Sharp recessed groove: 1.4571
4
Two sharp recessed grooves: 1.4301
4
Flat recessed groove: Hastelloy
4
When other materials are used, either
the material number or its designation is
engraved on the plug.
The Kvs coefficient and characteristic are
engraved on the plug.
4
Stellited plugs are marked by an
engraved "st".