Valvula de Mariposa
Valvula de Mariposa
Valvula de Mariposa
RELIABILITY PERFORMANCE
Approvals Excellent for on-off and control applications
□ TA-Luft, chapter 3.1.8.4, Shell SPE 77/312, □ Bi-directional tight seat ISO 5208 rate A (air), FCI 70.2
ISO 15848 Class VI, API 598
□ Firesafe tested to BS6755 and API607, 6th edition. □ Unique all-metal seat design assures superior tightness in
difficult applications over long time periods.
Increased safety and minimized emissions □ Contact between disc and seat is mechanically
□ As standard, live loaded gland packing to meet TA-Luft induced and does not rely on assistance from differen-
and Clean Air Act requirements. tial pressure.
□ PTFE V-ring or graphite packing for a wide range of □ Low cost control valve for low differential pressures.
applications. □ S-disc option for optimised control performance, even
□ Double packing with or without connection for leak- to 80 degree opening without dynamic torque and to
age detection if required. difficult high noise and cavitation applications.
□ Anti-blow out shaft construction is standard in all
valves, see page 2 exploded view. Abrasion resistant
□ ATEX □ Solid metal seat design offered in a variety of materials
to suit your application.
□ Fully metal seated construction. No resilient parts
exposed to the medium.
2 LW 20 EN • 5/2019
METSO 2 LW 20 EN
EXPLODED VIEW
b
a
PARTS LIST
ITEM PART DESCRIPTION STANDARD MATERIALS
1 BODY EN 10213-1.0619 / ASTM A 216 gr. WCB EN 10213-1.4408 / ASTM A 351 gr. CF8M
2 CLAMP RING EN 10213-1.4408 / ASTM A 351 gr. CF8M
3 DISC ASTM A 182 gr. F316, (EN 10213-1.4408 or EN 10088-1.4401)
SEAT RING (code A) Hard chrome coated Incoloy 825
4 SEAT RING (code C) Polymer hard chrome impregated Incoloy 825
9 GLAND EN 10213-1.4408 / ASTM A 351 gr. CF8M
10 BLIND FLANGE EN 10213-1.4408 / ASTM A 351 gr. CF8M
11 DRIVE SHAFT AISI 329
12 SHAFT AISI 329
13 KEY Stainless Steel
14 PIN AISI 329
15 BEARING AISI 316 + PTFE
16 BEARING AISI 316 + PTFE
18 GASKET Graphite
19 BODY SEAL Graphite
20 SET GLAND PACKING PTFE V-ring
22 ANTI-EXTRUSION RING Graphite + AISI 316
24 STUD Stainless steel
25 HEXAGON NUT Stainless steel
26a STUD Stainless steel
26 b HEXAGON NUT Stainless steel
27 HEX SOC.HEAD CAP SCREW Stainless steel
29 IDENTIFICATION PLATE AISI 304
42 RETAINING PLATE EN 10088-1.4435 CF8M
44 TA-Luft kit
TECHNICAL SPECIFICATION
Product type Clamp ring: EN 10213-1.4408 / ASTM A 351 gr. CF8M
Metal seated, high performance triple eccentric disc valve Shafts and pins: AISI 329 - 1.4418 / ASTM A 546 gr. 630
LW : Wafer type (17-4PH)
LG : Lug type Seat ring, code A: Hard chrome plated Incoloy 825
Bearings: AISI 316 + PTFE or cobalt based alloy
Pressure ratings:
Body: Type: LW6L, LW7L, LG6L, LG7L
Material and test certification
PN 25, ISO PN 20, ASME150 EN 10204-3.1B material certificates for body, clamp ring, gland
and blind flange. Disc and shaft certification on request. Tight-
Type: LW8M, LG8M, LW5M, LG5M ness test certificate.
PN 40, ISO PN 50, ASME300
Type: LW8C, LG8C Approvals
Sizes DN 700 - DN 1000: ASME 150 Emission: TA-Luft, chapter 3.1.8.4, Shell SPE 77/312,
ISO 15848
Trim: Type: LW6L, LW7L, LG6L, LG7L
Fire test: BS6755 and API607, 6th edition.
Sizes DN 80 - DN 150 : PN 25
Sizes DN200 - DN 600: ISO PN 20 Valve tightness (bi-directionally)
Type: LW8M, LG8M, LW5M, LG5M Standard seat, code A:
Sizes DN 80 - DN 600: PN 40, ISO PN 50 ANSI Class V
ISO 5208, rate D, air
Type: LW8C, LG8C
DIN 3230 rate 3
Sizes DN 700 - DN 1000: ASME 150
10 x ISO 5208 rate D with RH hand lever
Size range Optional tightness:
API 598 (metal seated),
DN 80 - DN 1000 (DN 125 LW only)
ANSI Class VI
Temperature range ISO 5208 rate A, air (4"-24")
-200 °C…+ 600 °C Other tightness on request
(over + 600 °C please consult with factory)
Options
Design standards S-Disc, flow balancing trim, see bulletin 2 S-L1 20
In accordance with ASME B16.34, API 609 cat B and DIN 3840 Oxygen construction for gaseous oxygen service
High temperature design
Standard materials High cycle/cycling design
Body: EN 10213-1.0619 / ASTM A 216 gr. WCB Erosion resistant design
EN 10213-1.4408 / ASTM A 351 gr. CF8M Cryogenic
Steam jacket, heat tracing
Disc: EN 10088-1.4401 / ASTM A 182 gr. F316
NACE MR0103/MR0175
EN 10213-1.4408 / ASTM A 351 gr. CF8M
Flow data
Cv of LW6, LW7, LW8 and LG6, LG7 and LG8 valves in pressure classes PN 25 and PN 40 / ISO PN 50. Kv value is 0,865 x Cv.
Cv values
Inch DN Cv values S-Disc
#150 #300 #150 #300
3 80 245 245 210 210
4 100 450 450 310 310
5 125 760 760 520 520
6 150 1500 1300 790 680
8 200 3050 2300 1470 1160
10 250 5300 3500 2580 2130
12 300 7600 5280 3500 3480
14 350 9400 7470 4500 5200
16 400 12200 5540 5670 4750
18 450 17600 6810 7670 5900
20 500 21900 9110 9180 7840
24 600 31000 10400 13500 9290
28 700 25100 12700
30 750 35300 17800
32 800 46700 20900
36 900 53000 23100
40 1000 69600 30000
Pressure/temperature ratings for valve body, WCB Pressure/temperature ratings for valve body, CF8M
Temperature °F Temperature °F
0 122 212 302 392 482 572 662 752 842 0 122 392 572 752 932 1112 1292
60 60 870
870
50 725 50 725
PN 40
ASME 300 (ISO PN 50)
30 435
30 435
PN 40
PN 25
20 290 20 290
PN 25
0 0
0 0
0 50 100 150 200 250 300 350 400 450 0 100 200 300 400 500 600 700
Temperature °C Temperature °C
LW8C
LW8CB LW8CB Weight
A1
NPS/DN A(K3) ØB C E K S T U V O R M N P kg
28/700 115 229 - 762 510 505 685 230 90 M24 M16 70 399 19.05 119 78.2 360
30/750 102 229 - 813 530 575 755 230 90 M24 M16 85 326 22.23 146 94.6 470
32/800 102 241 - 864 615 600 780 230 90 M24 M16 85 326 22.23 146 94.6 540
36/900 107 241 - 972 655 630 850 330 120 M30 M24 95 376 22.23 156 104.8 730
40/1000 135 300 - 1080 745 724 944 330 120 M30 M24 105 400 25.4 180 116.1 1030
DN150 - 600
DN 150 - 600
LG8C
Weight
NPS/DN A1 A(K3) ØB C E K S T U V O R M N P
kg
28/700 115 229 - 835 510 505 685 230 90 M24 M16 70 399 19.05 119 78.2 550
30/750 102 229 - 885 530 575 755 230 90 M24 M16 85 326 22.23 146 94.6 590
32/800 102 241 - 940 615 600 780 230 90 M24 M16 85 326 22.23 146 94.6 600
36/900 107 241 - 1055 655 630 850 330 120 M30 M24 95 376 22.23 156 104.8 790
40/1000 135 300 - 1175 745 724 944 330 120 M30 M24 105 400 25.4 180 116.1 1150
*) G2
*) F2
G1
F1
B
D
N
A C J
DN
L
øK
A C J
LW6LB, LW7LB + RH
Handlev L_6 (K1) L_7 (K2) LW_ LG_ Dimensions, mm LW_L-RH LG_L-RH
Valve DN
er A A B C H B C H J K L kg kg
80 RH415 49 49 128 80 355 205 120 395 275 100 400 5 10
LW6L / LG6L 100 RH420 52 56 158 100 410 235 135 445 310 100 400 7 15
LW7L / LG7L 125 RH420 56 64 190 135 495 270 145 505 330 100 400 11 22
150 RH520 56 70 212 150 530 300 160 540 370 130 500 17 26
Metso Corporation
Subject to change without prior notice. Product names in this
Töölönlahdenkatu 2, PO Box 1220, 00100 Helsinki, Finland bulletin are all trademarks of Metso Flow Control Inc.
Tel. +358 20 484 100
http://contact.metso.com/
www.metso.com/valves