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Lechler Ltd
1 Fell Street, Newhall
Sheffield, S9 2TP, England
Tel: +44(0)114 249 2020
info@lechler.com
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SELECTOSPRAY® Valve Family

SELECTOSPRAY® Valve Family

The proven Lechler valve designs are available in pneumatic, electric and electropneumatic versions:

  • Modulax: pneumatically controlled with the solenoid in the control cabinet outside of the mill. Pneumatic valves are primarily used for steel and hot aluminium rolling systems.¬†Available in 52mm and 26mm sizes.
  • EVA: purely electrically controlled. Electrical valves are used primarily for aluminium rolling systems. Available in 52mm and 26mm sizes. The valve can be pulsed, if required, to 5Hz.
  • ISA, Modulax DSA and Mini Modulax DSA: Electro-pneumatically controlled. Offers the robustness of the Modulax valve, with the responsiveness of an electric valve.
    The ISA and Modulax DSA are for 52 mm and the Mini Modulax DSA is for 26 mm zones.
All valve versions offer:

  • Very large coolant entry ports
  • Easy maintenance - removable from the header front and protected by the header itself
  • Absolute versatility of nozzles. Lechler can use standard nozzle tips, with a flow range of 1:10 at the same pressure and six spray angles available. Or Lechler will custom design the nozzles to suit the absolute mill requirements.

SELECTOSPRAY® EVA Valve

SELECTOSPRAY® EVA Valve

Especially in rolling mills where inflammable rolling oil or kerosene is used as a coolant (aluminium cold mills, aluminium foil mills) there is the demand for valves operating without the need for compressed air. The EVA valve is electrically controlled and fulfills this requirement.

 

Another important criteria is the failure-close operation with regard to the risk of mill fires. The EVA valve meets this criteria too.  

 

The EVA valve can be pulsed, allowing operation to 5Hz if required. Pulsed operation allows for increased  turn down ratios and improved control.


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SELECTOSPRAY® Mini EVA Valve

SELECTOSPRAY® Mini EVA Valve

Like the 52mm EVA Valve, the Mini EVA is directly controlled by electric control signals, no compressed air is required.

 

Another important criteria is the failure-close operation with regard to the risk of mill fires. The Mini EVA valve meets this criteria too.  

 

The Mini EVA valve can be pulsed, allowing operation to 5Hz if required. Pulsed operation allows for increased  turn down ratios and improved control.

 

The smaller size of the Mini EVA valve allows it to be used at zone spacings of 26mm. It also has benefits in mills where space to install cooling headers is restricted.


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SELECTOSPRAY® Modulax Valve

SELECTOSPRAY® Modulax Valve

The Modulax valve is named because of it modular construction and its laminar flow characteristics in the axial direction. The valve is manufactured entirely in stainless steel except for its single moving part, the piston, which is supplied in Delrin.

 

Large inlet ports in the Modulax Valve permit coolant to enter directly and laminar to the nozzle. Due to the perfect geometry inside the valve, the nozzle forms a perfect blade-like flat jet for an optimized heat transfer. The Modulax Valve can also be used with full cone nozzles. This is a very robust valve, and is very tolerant to coolant with a higher particulate content.


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SELECTOSPRAY® Mini Modulax Valve

SELECTOSPRAY® Mini Modulax Valve

Like the 52mm Modulax Valve, the Mini Modulax Valve is controlled by solenoid valves located in a remote control cabinet. It has the same design as the Modulax Valves with the only difference, that the nozzles are shaped as nozzle plates, ensuring the correct nozzle inclination angles and the ease of maintenance.

 

Often the mill environment will determine the space available for the spray headers. The Lechler Mini Modulax System is of great aid where space is restricted. While the headers can be made to fit into a small area, the coolant flow through the Mini Modulax Valve can be up to 59 l/min at 7 bar.


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SELECTOSPRAY® ISA Valve

SELECTOSPRAY® ISA Valve
The ISA valve is an electro-pneumatic valve with an integrated solenoid. The valve can be removed completely from the front of the header. The valve is for a minimum pitch of 52 mm (50 mm is the absolute minimum). The valve is of robust design with large coolant ports. The valve is operated by clean filtered compressed air.

 

The Lechler ISA valve delivers these requirements.


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SELECTOSPRAY® Modulax DSA Valve

SELECTOSPRAY® Modulax DSA Valve
Electro-pneumatic valve, split body design, with the solenoid assembly fitted directly behind the Modulax valve
Both the Modulax valve and the solenoid assembly can be removed completely from the front of the header.

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SELECTOSPRAY® Mini Modulax DSA Valve

SELECTOSPRAY® Mini Modulax DSA Valve
This electro-pneumatic valve is like the 52 mm Modulax DSA valve but can be used for 26mm pitch.
The Mini Modulax DSA valve has a split body design, with the solenoid assembly fitted directly behind the Mini Modulax valve
Both the Mini Modulax valve and the solenoid assembly can be removed completely from the front of the header.

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