Spirax Sarco K Series User Manual

IM-S24-15 CH Issue 4
8
2. General product information
The K and L series control valve range consists of; two-port single seat globe valves with
cage-retained seats conforming to either EN 1092 or ANSI/ASTM specification. These valves
are available in three body materials: SG iron, cast steel or stainless steel (with the exception
of the L series, which is available in cast iron only) in sizes DN15 to DN100 (½" to 4").
2.1 Pressure / temperature limits - KE and LE valves
KE43, KE61 and KE63 PN40
Body design
KE71 and KE73 PN25
conditions
KE43B1, KE61B1, KE63B1, KE71B1 and KE73B1 PN16
LE31, LE31B1, LE33 and LE33B1 PN16
KE43 40 bar g @ 120°C
Maximum design
KE61 and KE63 40 bar g @ 50°C
pressure
KE71 and KE73 25 bar g @ 110°C
KE43B1, KE61B1, KE63B1, KE71B1 and KE73B1 16 bar g @ 110°C
LE31, LE31B1, LE33 and LE33B1 16 bar g @ 110°C
KE43, KE61 and KE63 400°C
Maximum design
KE71 and KE73 350°C
temperature
KE43B1, KE61B1, KE63B1, KE71B1 and KE73B1 300°C
LE31, LE31B1, LE33 and LE33B1 300°C
Minimum design
KE43B1, KE61B1, KE63B1, KE71B1 and KE73B1 -10°C
temperature
KE61 and KE63 -10°C
LE31, LE31B1, LE33 and LE33B1 -10°C
Standard packing PTFE chevron 250°C
PTFE soft seat (G) 200°C
High temperature packing (H) LE Valves 300°C
Maximum operating
High temperature packing (H) 400°C
temperature
Extended bonnet (E) with PTFE chevron 250°C
Extended bonnet (E) with graphite packing 300°C
Bellows (B1) 300°C
Designed for a
KE43 60 bar g
maximum cold
KE61 and KE63 60 bar g
hydraulic test
KE71 and KE73 38 bar g
pressure of:
LE31 and LE33 24 bar g
Warning for valves fitted with bellows - Remove bellows before hydraulic testing is done
Maximum differential pressures: See relevant actuator Technical Information sheet
Key to charts on page 9:
The product must not be used in this region.
High temperature packing is required for use in this region.
High temperature bolting and packing is required for use in this region.
A - A Note: Valves fitted with PN16 bellows (B1) are limited to the maximum bellows rating
of 16 bar.

Spirax Sarco K Series Specifications

General

Brand	Spirax Sarco
Model	K Series
Category	Control Unit
Language	English