Steam traps
Inverted bucket
S and SF Series
Cast Iron
Inverted Bucket Steam Traps
Cert. No. LRQ 0963008
ISO 9001
Description
The S and SF series are a range of inverted bucket steam traps.
The body and cover are constructed from cast iron and the complete
unit is readily maintainable.
Available options
S series In-line connections and integral strainer
SF series Integral flanged connections and integral strainer
Standards
This product fully complies with the requirements of the European
Pressure Equipment Directive 97/23/EC.
Certification
This product is available with certification to EN 10204 3.1.
Note: All certification / inspection requirements must be stated at
the time of order placement.
Sizes and pipe connections
1⁄2"-SA, 3⁄4"-SB, 1"-SC, 11⁄2"-SDscrewedBSP,BSEN10226
DN15 - SFA, DN20 - SFB, DN25 - SFC, DN40 - SFD
Standard flange EN 1092 PN16 (UNI 2237/2229)
Pressure/temperature limits (ISO 6552)
21
TI-P077-01
ST Issue 5
15
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8
18
Screwed 1⁄2"
7
11
5.6.12
10
Steam
saturation
curve
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Pressure bar g
The product must not be used in this region.
9
Body design conditions
PMA Maximum allowable pressure
TMA Maximum allowable temperature
Minimum allowable temperature
PMO
Maximum operating pressure
for saturated steam service
TMO Maximum operating temperature
Minimum operating temperature
PN16
16 bar g @ 120°C
300°C @ 9.6 bar g
-10°C
13 bar g @ 195°C
300°C @ 9.6 bar g
0°C
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17
12
2
T
e
m
p
e
r
a
t
u
r
e
°
C
∆PMX Maximum differential pressure
Screwed 4 bar 8 bar 12 bar Flanged 4 bar 8 bar 12 bar
1⁄2"
SA4 SA8 SA12 DN15 SFA4 SFA8 SFA12
3⁄4"
SB4 SB8 SB12 DN20 SFB4 SFB8 SFB12
1"
SC4 SC8 SC12 DN25 SFC4 SFC8 SFC12
11⁄2" SD4 SD8 SD12 DN40 SFD4 SFD8 SFD12
Designed for a maximum cold hydraulic test pressure of 24 bar g
No. Part
10 Strainer cap
11 Strainer gasket
12 Cover gasket
*13 Valve seat gasket
*14 Pivot pin
15 Top plug
* 16 Valve screw
17 Cover bolts
Flanged DN15
Cast iron
Reinforced exfoliated graphite
Reinforced exfoliated graphite
Materials
No. Part
1
Body
2
Cover
Material
Cast iron
Cast iron
Stainless
Stainless
Stainless
Stainless
DIN 1691 GG25
DIN 1691 GG25
X30 Cr 13
X30 Cr 13
BS 1449 304
BS 1449 304
BS 3605 CF5 304 S14
BS 1449 304
ASTM A240 316L
Stainless steel
Stainless steel
Malleable iron
Stainless steel
Steel
Steel
Stainless steel
Stainless steel
Stainless steel
BS 1449 304
BS 970 304 S15
BS 6105 CI A2 70
BS 3692 Gr. 8.8
BS 1387
* 3
* 4
* 5
* 6
Valve seat
Valve head
Valve lever
Lever pivot
steel
steel
steel
steel
steel
steel
steel
18 Inlet tube 3⁄4", 1", 11⁄2"
* 19 Starlock washer
*20 Washer
7
Ferrule
Stainless
8
Bucket
Stainless
9
Strainer screen
Stainless
21 Name-plate
* Parts 3, 4, 5, 6, 13, 14, 16, 19 and 20 have been shown overleaf.
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 2009
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Material
DIN 1691 GG25
BS 1449 304
