Control systems Control valves
4
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TI-P359-14 CTLS Issue 8
QLM and QLD Series Three-port Control Valves
Description The QLM and QLD are three-port control valves which have linear characteristics for mixing or diverting service. These valves can be used on thermal oil, compressed air, steam, condensate and some other fluids.They are available in four body materials: cast iron, SG iron, carbon steel or stainless steel. All valves can be supplied with the standard metal-to- metal seats, stellite facing for increased resistance to wear or soft seats for tight shut-off. The standard stem sealing is by spring adjusted PTFE chevrons but high temperature graphite seals or metal bellows with supplementary safety packing may also be specified. The QLM and QLD three port control valves can be used with the following actuators:
PN9000E series PN9000R series
AEL3 AEL7 AEL8
Pneumatic:
4.1 113
Electric:
Technical data Plug design Plug characteristic
"V" Port
Linear
Metal- to-metal seal
EN 60534-4 Class IV
Leakage class
Stellite faced PTFE soft seal
Maximum of 0.005% of Kv
EN 60534-4 Class VI
Rangeability
30:1
DN15 - DN50 DN65 - DN100 DN125 - DN200
20 mm 30 mm 50 mm
Travel
Sizes and pipe connections All valve flanges referred to in this document are in accordance with EN 1092. Note: JIS and ASME flange options are also available on request. Type Body material Connection Size range
QL33M
Cast iron
PN16
DN15, 20, 25, 32, 40, 50, 65, 80, 100, 125, 150 and 200
* Note: QL43M, QL43D , QL63M and QL63D three-port control valves are also available with PN16 flanges by special order.
QLM: Mixing service
QL43M* Carbon steel PN25/PN40 DN15, 20, 25, 32, 40, 50, 65, 80, 100, 125, 150 and 200 QL63M* Stainless steel PN25/PN40 DN15, 20, 25, 32, 40, 50, 65, 80, 100, 125, 150 and 200 QL73M SG iron PN16/PN25 DN15, 20, 25, 32, 40, 50, 65, 80, 100, 125, 150 and 200
QL33D
Cast iron
PN16
DN25, 32, 40, 50, 65, 80, 100, 125, 150 and 200
QLD: Diverting service
QL43D* Carbon steel PN25/PN40 DN25, 32, 40, 50, 65, 80, 100, 125, 150 and 200 QL63D* Stainless steel PN25/PN40 DN25, 32, 40, 50, 65, 80, 100, 125, 150 and 200 QL73D SG iron PN16/PN25 DN25, 32, 40, 50, 65, 80, 100, 125, 150 and 200
TI-P359-14 CTLS Issue 8
Page 1 of 11
QLM and QLD Three-port Control Valves
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