Gefa Domino AT 100 Series Скачать руководство пользователя страница 6

 

Instructions for use DOMINO valves 
AT 100 / 150 / 200 / 300 / 400/ 600 

AT-Betriebsanleitung (GB) (GR) 16.06.2011 

 

6 / 6

 

 
 
6.3 

Lubrication of valves  

 

Valves with hand-wheel operation 

 

The spindle must always be kept well greased and free of dirt. The greasing points on the hand wheel 
bearing must be regreased regularly depending on the conditions of operation and use. 

 
 

Valves with pneumatic or hydraulic operation 

 

The piston rod should be clean and free of dirt. A self-lubricating rod seal is used as standard with pneumatic 
cylinders with damping. All the seals should be replaced if these cylinders leak. 

 
 Electrically-operated 

valves 

 

The spindle must always be kept well greased and free of dirt. The greasing points on the actuator must be 
checked. The respective instructions for use of the actuator manufacturer are binding. 

 
 Recommended 

lubricants: 

 

Shell Alvania R2, Molikote-Longtherm 2 Plus or equivalent. 

 
6.4 Cleaning 
 

If specified by the customer, the valves can be provided with flushing or blowing facilities in the upper part of 
the housing. Depending on the medium to be shut off and with regard to the process in question, the valve 
should be flushed or blown during opening and closing. 

 
 

Depending on the application, the valve plate and plate guides must also be cleaned. 

 

If the valve is seldom operated, and especially in the case of automatic valves, a test run should be made at 
least every 3 months to ensure permanent readiness for use and to avoid deposits from becoming baked on. 

 
 

7. Final 

remarks 

 
 

The details given here correspond to the latest state of our knowledge and, in connection with the technical 
documentation, the purpose of providing information about our products and their range of applications. 

 

They are not meant to guarantee particular features of the products or their suitability for specific 
applications. 
Any existing copyrights and patent rights must be taken into consideration. We guarantee the quality within 
the scope of our terms and conditions of sale. 

 
 
 

We reserve the right to make changes and improvements. 

 

Содержание Domino AT 100 Series

Страница 1: ...rosion preventative 3 3 Preservation of EKB epoxy powder coating and special painting 3 4 Protection of the valve 3 5 Place of installation 3 6 Position of installation 3 7 Direction of flow 4 Mounting 5 Initial operation 5 1 General measures 5 2 Shutting off powdery or granular media 5 3 Control pressure use of control media 5 4 Pneumatically operated valves 5 5 Hydraulically operated valves 5 6 ...

Страница 2: ...urable corrosion preventative 2 3 The corrosion preventative applied at the factory must be checked for any damage in transit and suitably repaired if needed 2 4 For parts mounted on the valves such as electrical actuators limit switches valves etc the corresponding storage instructions of the relevant manufacturers shall have priority 3 Installation 3 1 Safety recommendations Operation of electri...

Страница 3: ... those parts of the installation that will be in contact with the valve during subsequent operation of the installation must be removed carefully Sand blasting grit can destroy the valve plates and seals within a very short time 3 5 Place of installation The possible locations for installing the valve must be selected such that surfaces A and B are freely accessible for both sides to allow the sea...

Страница 4: ...ps per 1000 litres of air will be sufficient Unless explicitly stated otherwise when ordering pneumatic control valves installed by us are supplied without accessories such as chokes or silencers The stipulations at the customer s site must be followed Pneumatically operated valves should not be closed suddenly as otherwise there is a risk of pressure shock i e water hammer 5 5 Hydraulically opera...

Страница 5: ...carefully to prevent the seal from being destroyed in subsequent operation 6 Recommendations for the maintenance of DOMINO valves 6 1 Readjusting the seal During prolonged storage and in the event of larger temperature fluctuations the sealing material of the seal of the narrow face may shrink or else release air trapped in the seal and thus can cause minor leakages on the narrow face of the plate...

Страница 6: ...ified by the customer the valves can be provided with flushing or blowing facilities in the upper part of the housing Depending on the medium to be shut off and with regard to the process in question the valve should be flushed or blown during opening and closing Depending on the application the valve plate and plate guides must also be cleaned If the valve is seldom operated and especially in the...

Страница 7: ...ting tools scissors sanding disc o Suitable retaining fixtures e g metal clamps as a mounting aid for cross sealing and scraper 2 Spare parts 2 1 Only original spare parts may be used 2 2 For complete sealing replacement the following spare parts are required o Cross sealing compact cross sealing cross sealing with scraper or U profile PTFE with silicone base o Suitable grease e g Red Rubber o Rou...

Страница 8: ... Red Rubber The narrower side must be pointing towards the gate If a U profile PTFE with silicone base is used proceed as shown below If a scraper is used in combination with the compact cross sealing proceed as shown on the right 4 2 Fix the sealing elements in place using a suitable retaining fixture e g metal clamps 5 Preparing the rear body part 5 1 Adapt and insert the cross sealing if approp...

Страница 9: ...to the intended groove and grease using a suitable agent e g Red Rubber Push the gate forwards using a plastic hammer or similar The inserted round seal should now have 1 mm pre tension Correct pressing by backing the round seal if necessary 5 5 Fill the two indentations next to the gate at the level of the cross sealing profile using filling corner profiles cross sealing profile The length measur...

Страница 10: ...fied torque Keep the prescribed order of tightening see diagram DN Screw Torque Nm 50 80 M8 17 100 250 M10 27 300 350 M12 39 400 800 M16 75 900 1000 M20 117 1200 M24 169 17 16 13 12 9 8 5 4 1 2 3 6 7 10 11 14 15 18 19 7 Packing Fill packing material 4mm B into the two packing holes M6 in the front body part using the packing tool C until the bore hole is filled Then screw in the screws A 8 Pressur...

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