Flowserve Valtek Mark 200 User Manual
Page 6
Mark 200 Control Valve FCD VLENIM0200– 12/12
6
Figure 3 – Exploded Drawing of an ASME Mark 200, pressure balanced with cage
Part
Item
Available Materials
Body
1
Carbon Steel (WCC) , 316 SS (CF8M), CrMo (WC9, C12A),
Duplex SS
Seat Ring*
20
316 SS, 316 SS / Alloy 6, 410 SS HT, 416 SS HT, 420 SS HT
Plug*
50
316 SS, 316 SS / Alloy 6, 416 SS HT, 420 SS HT, CrMo/Alloy 21
Plug Stem
51
316 SS, 316 SS / Alloy 6, 416 SS HT, 17-4PH SS
Cage
30
316 SS , 416 SS HT, CrMo/Nitrided
Pressure
Balanced Sleeve
31
316 SS, 410 SS, 410 SS HT, 420 SS HT**, 316 SS / Alloy 6,
CrMo/Nitrided
Bonnet
40
Carbon Steel, 316 SS, CrMo, Duplex SS
Seat Gasket
55
PTFE, Spiral Graphite
Sleeve Gasket
56
PTFE, Spiral Graphite
Bonnet Gasket
58
PTFE, Spiral Graphite
Seal T
ypes
O-Ring Seal
65
Buna, Viton
®
, EPDM, Perflouroelastomer
Back-up Ring
66
Carbon-Filled PTFE, PEEK, Vespel
®
, Ryton
®
PTFE Seal
65
PTFE, Glass-Loaded PTFE
Metal Multi-Seal
65
Rene 41
®
, Inconel
®
X-750
Carbon Seal
65
Carbon (Single & Triple)
Gland Flange
80
Carbon Steel
1
, Stainless Steel
2
Gland Flange Bolting
109, 117 Carbon Steel
1
, Stainless Steel
2
Lower Guide
83
316 SS / GL PTFE
1, 2
, 316 SS / Graphite, Bronze C93200,
Alloy 6, Ultimet
Upper Guide
87
316 SS / GL PTFE
1, 2
, 316 SS / Graphite, Bronze C93200
Packing
88
PTFE V-Ring
1, 2
, PTFE / Glass V-Ring, Quick-Set 9001, Braided
PTFE, AFPI, Graphite Rib/Braid, Safeguard, Sureguard, 1303
FEP, Chesterton 5800E, Sureguard XT, TA-Luft Double Graphite
Body Bolting
108
B7-2H Zinc-coated
1
, B7-2H Oxide-coated, B7M-2HM (NACE),
B8-8 (304 SS)
2
, B8M-8M (NACE), L7-7, L7M-7M (NACE),
B16-7L, L7M-7M Uncoated (NACE)
Packing Spacers
93-99
316 SS
1,2
* The seat ring and plug have hard facing of alloy 6 or other materials on the seating and guiding surfaces
** Internal Sleeve Only
1
Standard for Carbon Steel Body Construction
2
Standard for Stainless Steel Body Construction
Packing, Guides & Spacers
83-88, 93-99
Body Bolting 108
Seat Ring 20
Seat Gasket 56
Bonnet 40
Body 1
Plug 50
Bonnet & Sleeve Gasket
56 & 58
Pressure Balanced Sleeve 31
Gland Flange Bolting 109, 117
Gland Flange 80
Pressure Balance Seals 65,66