Ductile iron valves

Flanged type butterfly valves

Flanged type butterfly valves are used to connect and disconnect the fluid flow. These types of valves should never be used to control the fluid flow, so that when using these valves in lines, the disc must be completely open or fully closed in all other cases there is a possibility of damage to the valves.

Corrosion protection coatings:

1. Epoxy powder coating
2. Epoxy liquid coating
3. Interior glazing based on customer order

Scope of supply:

Different kind of gearboxes:

1. Travelling-nut type with hand wheel or electrical actuator.
2. Worm gearbox with hand wheel or electrical actuator

Non-return valves

Non-return valves are automatic valves, which are not only on the line of most pipelines used in various industries, but also at the outlet of most pumps to pre the fluid from returning to the pipes and the paths in which the fluid moves.

Titling-Disc Non-return Valve with Counter Weight

These valves are used to pre water reversal in water lines and to pre damage to other components. In such a way that when the direction of flow of the fluid is reversed, it will rapidly disconnect the flow of the fluid completely, and until the direction of flow of fluid returns to its previous state, the valve will remain closed completely and after the flow of fluid in the correct direction, the non-return valve’s disc automatically returns and fluid flows.

Scope of supply:

Production standards:

• Din EN 12334 Industrial valves – Cast iron non-return valves
• DIN EN 558 Face to face and center to face dimensions of metal industrial valve for use in flanged pipe systems
• DIN EN 1092-2 Standard of flanges and related fittings – circular flanges for valves, ductile iron pipes and fittings
• DIN 3476
• ISO 5208
• DIN EN 1563
• ISRI 4842

Gate valve:

The gate valves have a wedge with a linear movement to connect and disconnect the flow of fluid, which, when the wedge is fully open, is removed from the flow path and causes no resistance in the valve, resulting in less turbulence, comparing to other valves in the fluid flow. The pressure drop is not noticeable.

Characteristics

Ductile iron body and bonnet and elastomeric wedge with ductile iron core and for better sealing. The wedge of valve can be replaced quickly and easily without the need to take off the valve from the pipeline. Epoxy coating on all external and internal surfaces. Easy opening and closing valve and full sealing in closed mode. No longitudinal movement of the axis when opening and closing the valve. No need for maintenance at the time of operation.

Scope of supply:

Production standards:

• EN 1171 Industrial valves – Cast iron gate valves
• DIN EN 558 Face to face and center to face dimensions of metal industrial valve for use in flanged pipe systems
• DIN EN 1092-2 Standard of flanges and related fittings – circular flanges for valves, ductile iron pipes and fittings
• DIN 3476
• DIN 3476
• ISO 5208
• DIN EN 1563
• ISRI 3363

Air valve

Retained air in the water pipeline can cause some disorder like alteration of water pressure, Deby disturbance and air contraction, which leads to pressure lose and flow reduction. To pre these problems, which may damage the pipes, the air valves are used.

Single (large) orifice air valves

The function of this valve is releasing or injecting the voluminous air packets within the pipelines at the time of charging or discharging of the pipes, so it maintains the efficiency and provides protection of the main parts.

Double orifice air valves

In this type of, a one-inch air valve is mounted onto each size of the single orifice air valve. This valve can exhaust or admit air, further to releasing air pockets at the regular working of the pipeline.

Scope of supply:

Production standards:

• DIN EN 1092-2 Standard of flanges and related fittings – circular flanges for valves, ductile iron pipes and fittings
• DIN 3476
• ISO 5208