Service Work; Replacing The Gasket; Cleaning The Strainer - Samson 3241-1-Gas Mounting And Operating Instructions

Servicing

9.4 Service work

Î Before performing any service work,
preparations must be made to the control
valve (see section 9.2).
Î Complete all service work as described
in section 9.3 and check the control valve
before putting it back into operation (see
'Testing the installed valve' in the 'Instal‑
lation' section).
9.4.1

Replacing the gasket

1. Undo the body nuts (14) gradually in a
crisscross pattern.
2. Lift the bellows seal (22) with valve bon‑
net (2) and plug with plug stem (5) off
the body (1).
3. Remove the gasket (17). Carefully clean
the sealing faces in the valve body (1)
and on the bellows seal (22).
4. Insert a new gasket (17) into the body.
5. Place the bellows seal (22) with valve
bonnet (2) and plug with plug stem (5)
onto the body.
Version with V-port plug: place the as‑
sembly onto the valve body, making sure
that the largest V‑shaped port of the
V‑port plug faces toward the valve outlet.
See information under Aligning the
V‑port plug.
6. Firmly press the plug (5) into the seat (4).
Fasten down the bellows seal (22) with
the body nuts (14). Tighten the nuts
gradually in a crisscross pattern. Ob‑
serve tightening torques.
9-8
Aligning the V-port plug
To achieve the best flow conditions inside the
valve, the V‑port plug must always be in‑
stalled with the port that releases the flow
first when the valve opens facing toward the
valve outlet. This is the largest of the three
V‑shaped ports (see Fig. 9‑2).
2x small V‑ports
1x large V‑port:
First to release the flow when the
plug is lifted out of the seat.
Fig. 9-2: V-port plug
Î When mounting the actuator, turn the
plug stem of the valve to correctly align
the V‑port plug.
9.4.2

Cleaning the strainer

See associated device documentation.
EB 8020 EN