Control valves
Control valves
Local regulations may restrict the use of this product to below the conditions quoted.
In the interests of development and improvement of the product, we reserve the right to change the specification without notice.
© Copyright 2013
TI-P359-14
CH Issue 4
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:
Pneumatic:
Electric:
Technical data
Plug design
Flow characteristics
Leakage rate
Rangeability
Travel
PN5700 series
PN6700 series
PN7000 series
PN8000 series
PN9000E series
PN9000R series
EL7200 series
AEL5 series
AEL6 series
Parabolic / vee port
Linear
Metal-to-metal seat
Stellite faced
PTFE soft seal
30:1
DN15 to DN50
DN65 to DN100
DN125 to DN200
EN 60534-4 Class IV
Maximum of 0.005% of Kv
EN 60534-4 Class VI
20 mm
30 mm
50 mm
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
DN15, 20, 25, 32, 40, 50, 65, 80, 100, 125, 150 and 200
DN15, 20, 25, 32, 40, 50, 65, 80, 100, 125, 150 and 200
DN15, 20, 25, 32, 40, 50, 65, 80, 100, 125, 150 and 200
DN15, 20, 25, 32, 40, 50, 65, 80, 100, 125, 150 and 200
DN25, 32, 40, 50, 65, 80, 100, 125, 150 and 200
QLM: Mixing service
QL33M
Cast iron
PN16
QL43M*
Carbon steel
PN25
QL63M*
Stainless steel
PN25
QL73M
SG iron
PN16
QL33D
Cast iron
PN16
QL43D*
QL63D*
Stainless steel
PN25
QL73D
SG iron
PN16
/ PN40
/ PN40
/ PN25
Carbon steel
PN25
* Note: QL43M, QL43D, QL63M and QL63D three-port control valves are also available with PN16 flanges by special order.
QLD: Diverting service
/ PN40
/ PN40
/ PN25
DN25, 32, 40, 50, 65, 80, 100, 125, 150 and 200
DN25, 32, 40, 50, 65, 80, 100, 125, 150 and 200
DN25, 32, 40, 50, 65, 80, 100, 125, 150 and 200
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