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Operation instructions
Gate Valve
Type 3004 with blow-off pipes and
welding studs for steel pipes
for gas
Item no. of the operation instructions: 764835, issue 02, 9 pages, 2017
Specifications subject to change without notice
for hand wheel and stem extension set
Issue 02
Düker GmbH, www.dueker.de
1
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Summary of Contents for DUKER 3004
- Page 1 Operation instructions Gate Valve Type 3004 with blow-off pipes and welding studs for steel pipes for gas Item no. of the operation instructions: 764835, issue 02, 9 pages, 2017 Specifications subject to change without notice for hand wheel and stem extension set Issue 02 Düker GmbH, www.dueker.de...
- Page 2 1. Intended use 2. Safety precautions 2.1 General safety instructions 2.2 User safety instructions 2.3 Special risks 3. Transport and storage 4. Installation into the pipeline 4.1 Venting function 5. Operation 6. Service and maintenance 7. Drawing and parts list 8.
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Page 3: Intended Use
1. Intended Use After the installation into a pipe system, shut-off valves are only intended for stopping or allowing media to pass within the range of the permitted operating conditions (temperature and pressure limit "PN" labeling on the valve, unless stated otherwise). Gate valves are used exclusively for open/closed operation in pipe systems. - Page 4 2.2 User safety instructions The operator of the valve must ensure that the valve is only used in accordance with the intended use. This is not the responsibility of the manufacturer. The valve may only be operated by properly qualified and trained staff.
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Page 5: Transport And Storage
3. Transport and storage All valves must be carefully transported and stored. The valves are fully enamelled or powder-coated. The coatings are shock-sensitive and must be protected against impact stress. The gaskets are sensitive to light: Unpackaged valves may only be exposed to bright daylight or ultraviolet light for a very short time. - Page 6 The valve must installed in a horizontal pipeline, with the stem in vertical position. The valve should have adequate floor support. Both welding studs must not be shortened. Make sure that the surfaces in the welding area are bare metal, free from zinc and dry. ...
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Page 7: Operation
5. Operation The valve is shut by turning it clockwise and is opened by turning it in the opposite direction. Manual power suffices to operate the valves. Use of extensions to increase actuating torque is not permissible, since this will cause damage to the valve. Operating torques The stated operating torques are the max. -
Page 8: Drawing And Parts List
7. Drawing and parts list Description body bonnet cap nut clamp piece stem nut stem o-ring o-ring snap ring wedge head gasket cylinder screw adapter piece o-ring ball valve pipe clamp Lengths D 88,9 114,3 168,3 219,1 1050 273,0 1084 323,9 Issue 02 Düker GmbH, www.dueker.de... -
Page 9: Diagnostics And Troubleshooting
8. Diagnostics and trouble shooting Problem Possible cause Remedial action Foreign particle on sealing face Remove foreign particle Gate valve does not close Heavy deposits on the sliding surface Clean sliding surface Gate valve does not open Foreign particle is jamming sealing Remove foreign particle wedge Leakage at the stem or seat gasket:...
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