QLM and QLD Series Three-port Control Valves
The QLM and QLD are 3-way control valves with a linear valve characteristic, designed for mixing and distribution, respectively. The housing is available in cast iron, nodular cast iron, steel, and stainless steel.
All control valves can be supplied with metal-to-metal sealing, stellited for increased wear resistance, or with O-ring for a perfect seal. The control valve is standardly equipped with a valve stem packing with spring-loaded PTFE chevron rings.
Upon request, a valve stem packing in graphite or bellows membrane with safety packing is available for high temperatures.
The 3-way control valves, QLM and QLD, can be operated by the following servomotors:
Pneumatic:
- PN5700 Mixing: straight passage normally open Distribution: straight passage normally closed
- PN6700 Mixing: straight passage normally closed Distribution: straight passage normally open
- PN7000 Mixing: straight passage normally open Distribution: straight passage normally closed
- PN8000 Mixing: straight passage normally closed Distribution: straight passage normally open
- PN9000E Mixing: straight passage normally open Distribution: straight passage normally closed
- PN9000R Mixing: straight passage normally closed Distribution: straight passage normally open
Electric:
- EL7200 Mixing: straight passage normally open Distribution: straight passage normally closed
- AEL5
- AEL6
Diameters and connections:
see datasheet
