Skipper ETNSLJB - Page 3

SKIPPER 100 MM GATE VALVE FOR
ECHO SOUNDER TRANSDUCER.
INSTALLATION.
The SKIPPER 100 mm Gate Valve Echo Sounder is used for installation of :
1: Echo Sounder Transducer type TGM 60-50-25L or TGM 50-200-25L.
The SKIPPER 100 mm Gate Valve Echo Sounder is delivered assembled for transport.
The parts necessary for nal assembly will be found on the gate valve itself, or packed in a box, delivered
with the gate valve.
First of all, it must be decided, where the gate valve should be installed. Normally, this will be in the fore
part of the ship, in the centerline, or as close to the centerline as possible. There must be no protruding
objects in front of the gate valve, or in the immediate area at both sides. Welding seams in this area should
be smoothened and rounded off, in order not to create turbulence or aeration at speed.
The gate valve should be placed in a dry space, large enough for installation and disassembly of the gate
valve and sensor unit. See drawing: “Minimum space for convenient access”.
When the position has been decided, the gate valve is disassembled, a suitable ( 220 mm.) hole is cut in the
hull, and the bottom ange, item # 1, is welded into the hull . Standard welding practice and procedures
should be observed.
The orientation of the bottom ange must be observed. The centerline or a parallel to the CL should run
between two bolts, as shown on the enclosed drawing.
The type of steel used in the gate valve bottom ange is: TP 316 / TP 316L.
When the bottom ange has cooled off,
place an O-ring item # 12 in the groove inside the bottom ange. Apply ample amounts of grease on O-ring.
And place 0.5 mm Klingersil gasket, item # 14 on top.
Then place the Gate Valve element, item # 2, on top of the bottom ange. The 16 mm nuts and washers
should be mounted but not tightened.
Place a 1.5 mm Klingersil gasket on top of the gate valve element.
Mount the intermediate element, item # 3, on top of the gate valve element.
The ange with only 6 pinbolts to be upwards.
Place an O-ring item # 12 in the groove inside the intermediate element. Apply ample amounts of grease on
O-ring.
All 8 nuts / washers should be mounted, but not tightened.
Open the gate valve fully and insert sensor housing into the gate valve,
moving it from side to side to align the different elements exactly.
With the sensor housing still in place, tighten the 16 nuts below and above the gate valve element.
After tightening, check that the sensor still moves freely, easy to pull all the way out and insert again.