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Knife gate valves - VELAN - #19

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Text version of the page
HOW TO ORDER
TYPE OF CONNECTION
SIZE OF CONNECTION
PRESSURE RATING
TYPE
FACE-TO-FACE & DESIGN
BODY MATERIAL
SEAT PACKING SURFACE
AB
E
H
— —
1 4 0 3 1 0 C 1 3 S
Example: 6", lug, 150 class, metal-seated, cast, stainless steel knife gate valve.
A TYPE OF CONNECTION
D TYPE
B -
Butt weld
N -
Wafer
C -
Combination
P -
Flanged B16.47 series B (API 605)
(socket weld/threaded)
R -
Flanged ring joint
D -
DIN flanged
S -
Threaded
E -
Welded stubs butt weld
T -
Studded drilled & tapped
F -
Ranged B16.5 (B16.47 series A)
U -
Undrilled flanges
G -
Small tongue and groove
X -
Butt weld (intermediate class)
H -
Hub ends
W -
Socket weld
L -
Lug
Z -
Welded stubs socket weld
31 - Metal seat
32 - Soft seat
33 - Throttling stock valve
34 - Tilting disc check valve
37 - V-port
38 - Knife gate with seat insert
FACE TO FACE
DESIGN
0 - Tappi standard (wafer)
1 - ASME/ANSI standard (flanged)
2 - Regular (flanged)
B - Cast (bolted bonnet) C - Cast (bonnetless) F - Fabricated
F BODY MATERIAL
SIZE OF CONNECTION
02 - A105, WCB
11 - F304, CF8
12 - F304L, CF3
13 - F316, CF8M
14 - F316L, CF3M 23 - Alloy 20
28 - F317, CG8M
29 - F317L, CG3M
34 - F91, C12A
35 - F44, 254 5MO
Customers have the choice of specifying valve size as part of the valve figure number (B) using the numbers below, or indicating
valve size separately.
EXAMPLES:
L14-0310C-13SL (valve size is part of figure number) 6"L-0310C-13SL (valve size is shown separately)
V SEAT SURFACE
B - Viton F - PTFE
C - Black Neoprene M - Stellite
E - EPDM P - Polyurethane
S - Integral
W - White Neoprene
2" (50 mm) 2//2" (65 mm) 3" (80 mm) 4" (100 mm) 6" (150 mm)
15 - 8" (200 mm)
16 -10" (250 mm)
18 -12" (300 mm)
19 -14" (350 mm)
20 -16" (400 mm)
21 -18" (450 mm)
22 - 20" (500 mm)
23 - 22" (550 mm)
24 - 24" (600 mm)
26 - 26" (650 mm)
28 - 28" (700 mm) 30 - 30" (750 mm)
32 - 32" (800 mm) 34 - 34" (850 mm)
36 - 36" (900 mm)
I PACKING
C - Graphite/Inconel Filament 0-14 ph
PTFE 0-14 ph Graphite 0-14 ph
L - Spun synthetic 4-10 ph T - PTFE/Graphite 0-14 ph
The figure numbers shown on this key are designed to cover essential features of Velan valves. Please use figure numbers to ensure prompt and accurate processing of your order. A detailed description must accompany any special orders.
■ PRESSURE RATING
0 - 150
MATERIAL SPECIFICATIONS
NOTICE
1. Knife Gate valves should preferably not be opened or closed against pressure.
2. Lugs should not be used to adjust misalignment in piping.
3. Velan reserves the right to take exception to warranty when misapplications / 3rd party automation and other operations are carried out without Velan's prior knowledge.
4. Consult Velan sales for standard factory warranty.
ASTM
DESIGNATION
CAST
BAR STOCK
PLATE
316
316L
304
317L
A351 CF8M
A351 CF3M
A351 CF8
A351 CG3M
316
304
316
COM POSITION %
Carbon
0.08
0.03
0.08
0.03
0.08
0.08
0.08
Manganese
1.50
1.50
1.50
1.50
2.00
2.00
2.00
Phosphorus
0.04
0.04
0.04
0.04
0.045
0.04
0.045
Sulphur
0.04
0.04
0.04
0.04
0.030
0.03
0.03
Silicon
1.50
1.50
2.00
1.50
1.00
1.00
0.75
Nickel
9.00-12.00
9.00-13.00
8.00-11.00
11.5-13.5
10-14
8.00-10.50
10.00-14.00
Chromium
18.00-21.00
17.00-21.00
18.0-21.00
20.5-23.5
1-18
18.00-20.00
16.00-18.00
Molybdenum
2.00-3.00
2.00-3.00
—
3.00-4.00
2.00-3.00
—
2.00-3.00
Heat Treatment
Solution anneal
Tensile ksi min.
70
70
70
75
75
75
75
Yield ksi min.
30
30
30
35
30
30
30
Elong. % min.
30
30
35
25
30
30
40
R. area % min.
—
—
—
36
40
40
—
Hardness HB max.
—
187
—
185
187
187
217
Parts
Body, bonnet, yoke
Stem, post
Knife
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