Samson 3321 Mounting And Operating Instructions

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Samson 3321 Mounting And Operating Instructions Manual pdf 8 page image

7. Insert the spring (4.1) and washer (4.3)and carefully slide the new pack-ing (4.2) over the plug stem into thepacking chamber. Screw in the threadedbushing (5.2) and tighten.4.2 PlugWhen replacing the plug, you should alsoreplace the packing (4.2) and the gas-ket (1.2).To exchange the plug, carry out the samesteps as described in section 4.1. However,install a new plug instead of the used one.Apply lubricant (order no. 8150-0111) tothe plug stem prior to installation.4.3 Seat1. Unscrew the nuts (1.1). Lift the valvebonnet (5) and flange (5.1) off thevalve body (1).2. Unscrew the seat (2) using the appropri-ate seat wrench.3. Apply lubricant (order no. 8150-0119)to the thread and the sealing cone ofthe new seat and screw in.4. Place the valve bonnet with flange onthe valve body and secure with nuts(1.1). Observe the tightening torques!Sockets / seat wrenches / tightening torquesDN (size) 15...25(1/2...1")32...50(1 1/2...2")Socket / seat wrenchOrder no. 9932-3330 1280-3009Seat thread in mmTightening torque ±10 %M32 x 1.5170 NmM58 x 1.5500 NmBody nuts (1.1)Tightening torque +10 %M1010 NmM1230 NmFig. 3 ⋅ Stuffing box parts5.24.24.34.154.1 Spring4.2 Packing4.3 Washer5 Valve bonnet5.2 Threaded bushing8 EB 8111/8112 ENMaintenance – Replacing parts