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4 Valve Description
18 of 100
Part
No.
Description
Material
A 216 WCB A 217 WC6 A 217 WC9 A 217 C5
A 217 C12
A 352 LCB
A 352 LCC
A 351 CF8
A 351 CF8M
554
Washer
Carbon
steel
Carbon
steel
Carbon
steel
Carbon
steel
Carbon
steel
Carbon
steel
Carbon
steel
Stainless
steel
Stainless
steel
300
Bearing
Steel
Steel
Steel
Steel
Steel
Steel
Steel
Steel
Steel
458
Lantern ring
13Cr
13Cr
13Cr
13Cr
13Cr
304
304
304
316
Table 10: Trim materials
Part No.
Description
Trim 1
Trim 2
Trim 5
Trim 8
Trim 10
13% chrome steel (Cr) /
13% chrome steel (Cr)
304 / 304
Stellite / Stellite
Stellite / 13% chrome
steel (Cr)
316 / 316
350
Lower valve disc
section
13% chrome steel (Cr)
304 stainless steel
Stellite
13% chrome steel (Cr) 316 stainless steel
515
Seat ring
13% chrome steel (Cr)
304 stainless steel
Stellite
Stellite
316 stainless steel
200
Stem
13% chrome steel (Cr)
304 stainless steel
13% chrome steel (Cr) 13% chrome steel (Cr) 316 stainless steel
450
Back seat
bush
13% chrome steel (Cr)
304 stainless steel
13% chrome steel (Cr) 13% chrome steel (Cr) 316 stainless steel
4.3.1.6 Function
The main components of the globe valves are the body (100), the yoke (166), the
valve disc (350), the stem (200) and the actuating unit.
Stem seal
The gland packing (461), which seals off the stem (200), is tightened via the gland
follower (452) by means of eyebolts (900) and nuts (920.2). The yoke (166) is
equipped with a back seat bush (450) which seals off the valve when the stem (200) is
fully retracted.
Seat/disc interface
The hard-faced seat ring (515) is welded into the body (100). The seating surface of
the valve disc (350) is hard-faced.
Bonnet/cover seal
The body (100) and the yoke (166) are connected by studs (902) and nuts (920.1). The
joint is sealed by means of a joint ring (411).
4.3.2 ECOLINE GLF 150-600
4.3.2.1 Operating data
Table 11: Operating properties
Characteristic
Value
Nominal pressure
Class 150 - 600
Nominal size
NPS ½'' - 2''
Max. permissible pressure
104 bar / 1480 PSI
Min. permissible temperature
0 °C / 32 °F
Max. permissible temperature
816 °C / 1500 °F
Temperatures < 0 °C on request
Selection as per pressure/temperature ratings
(
ð
Section 4.3.2.4, Page 20)