Project Description

EN331-MOP5 BALL VALVES FOR GAS

EN331-MOP5 BALL VALVES FOR GAS

Brass full bore ball valve in with blowout-proof stem for gas applications. It is a full bore ball valve in brass designed in conformity with the European standard EN331, it is used in gas supply systems (natural gas, city gas and liquefied gas).

AVAILABLE MODELS
187
: Full bore, FxF, with lever
187F: Full bore, FxF, with butterfly
188: Full bore, MxF, with lever
188F: Full bore, MxF, with butterfly
187PP: Full bore, FxF, with butterfly, pressure test
188PP: Full bore, MxF, with butterfly, pressure test

Threaded ISO7  Female/Female

Maximum Operating Pressure (MOP) = MOP5
Operating temperature: -20°C + 60°C

INSTALLATION
Ball valves are bi-directional, they could handle the flow in both directions.
To install a ball valve correctly:

  1. Make sure that the pipes are well aligne;
  2. Place the fixing tool in the part of the valve which is closer to the pipe.
  3. Do not exceed in using sealing materials such as (PTFE or other material), use it only on the thread.
  4. In presence of impurities in the fluid (such as limestone, dust or sand) install a strainer (see our item 413)to avoid damages to the ball and the seals.

HOW TO UNINSTALL
Place the unfixing tool in the part of the valve which is closer to the pipe. Relief the pressure in the pipeline by opening the valve and allow the fluid to come out; unscrew the connections from the valve.

MAINTENANCE
It is important to verify the valves periodically to make sure that the valve is in good working conditions. The valve is supplied at opening position.
The opening and the closing are made by a 90° rotation of the handle. In the opening position, the handle is along the body of the valve, while in the closing position the handle is across the body. The ball valve is an interception valve and not a regulation one, therefore it must be completely opened or closed; if left at an intermediate position, seals could be damaged.
Only if you have to empty the pipe system, to prevent from frost problems, the valve must be opened at an intermediate position (45°) up to the complete discharge of the liquid, after that the valve could be fully opened.
It is suggested not to use the valve for liquids with abrasive suspensions.

DISPOSAL
For valve operating with hazardous liquids (toxic, corrosive…) , if there is a possibility of residue remaining in the valve, take due safety precaution and carry out required cleaning operation. Personnel in charge must be trained and equipped with appropriate protection devices. Prior to disposal, disassemble the valve and separate the component according to various materials. Please refer to product literature for more information. Forward sorted material to recycling (e.g. metallic materials) or dispose it, according to local and currently valid legislation taking into consideration the environment.