CF8M Stainless Steel Hydraulic Gate Valves Supplier, Buy High Temperature Reduced Bore Gate Valve

Gate valve is a type of installation device used in pipe systems to control to the flow of liquids through them. The gate vales have gates that open and close inside a closed body connected to the pipeline. The Parallel Gate Valves have parallelly connected gate. The gate face gives the designation of the valves such as parallel gate valve or the Wedge-shaped Gate Valves. The wedge shaped gate valves are more common in operation. The material of the gate valve can differ from ferritic iron to austenitic, duplex and alloy steel material. Carbon steel and mild steel material are also used in the production of the gate valves. The gate can be made of different material types as well.

Stainless Steel Gate Valves

Stainless Steel Gate Valves

316 Stainless Steel Knife Gate Valve

316 Stainless Steel Knife Gate Valve

304 Stainless Steel Flanged Gate Valve

304 Stainless Steel Flanged Gate Valve

Gate Valve Manufacturers in Mumbai, View Gate Valve Schematic Diagram

The Metal Seated Gate Valve has metal piece as the gate. This gate resides inside a body of the valve and is moved into the pipe and out of the pipe by a connected thread that is operated by a handle. There are different types of valve stems that hold the thread and handle. The rising stem valve is one of the most commonly used valves. The Metal Seated Knife Gate Valve is a different type of gate valve. Here the gate is a knife. There are operations which involve plastic solutions and high viscosity liquids. These liquids can be hard to stop with ordinary piece of metal. So the gates are designed as knives to cut through these high viscosity fluids so that the flow can be easily controlled.

 

Gate Valves Specification

NameGate Valve
Body MaterialASTM, ASME, JIS.
Cast Steel / Forged Steel,
Carbon Steel,
1Cr0.5Mo Steel,
2.5Cr1Mo Steel,
Stainless Steel,
9Cr1Mo-V Steel,
etc.
FluidWater, Steam, Gas, Oil, etc.
Connection FormSocket weld, butt weld, flanged*
Pressure Class,
Size(Standardized)
Class 150 - 2500: - 600 mm
Class 3500: - 400 mm
Class 4500: - 300 mm
Operation MethodManual (including the type with a manual reduction gear), electric

Standards of Parallel Gate Valves

  • API 600: cast carbon and alloy valves
  • API 603: stainless steel valves
  • API 602/BS 5352: forged valves
  • API 6D: slab and through conduit valves for pipelines
  • ASME ANSI B16.34: pressure ratings
  • ASME ANSI B16.10: face to face dimensions
  • ASME ANSI B16.5: flanged ends
  • ASME ANSI B16.25: butt weld ends
  • ASME ANSI B16.47: flanged ends for bore sizes above 24 inches

Difference Between Gate valve & Ball Valve

  • Gate valves belong to the family of “on-off” valves, ball valves to the family of “quarter-turn” valves
  • Ball valves feature very tight seals and are way less prone to leaks than gate valves
  • Ball valves have a longer life cycle and a lower failure rate than gate valves
  • Ball valves are easier to use than gate valves but tend to be more expensive

Metal Seated Gate Valve Diagram

Metal Seated Gate Valve

  1. Body
  2. Bonnet
  3. Wedge
  4. Stem
  5. Gland
  6. Seat ring
  7. Yoke
  8. Packing
  9. Gland Flange
  10. Valve port
  11. Yoke Bush
  12. Lantern
  13. Back Seat Bushing
  14. Gland eyebolts & nuts
  15. Bonnet bolts & nuts
  16. Hand Wheel
  17. Hand Wheel nut
  18. Bonnet Gasket

Trim & Material of Metal Seated Knife Gate Valve

API TRIM #BASE MATERIALMATERIAL FOR SEATMATERIAL FOR DISCBACKSEAT, MATERIALMATERIAL FOR STEM
1410410410410410
2304304304304304
3F310310310310310
4Hard 410Hard 410410410410
5HardfacedStelliteStellite410410
5AHardfacedNi-CrNi-Cr410410
6410 and Cu-NiCu-NiCu-Ni410410
7410 and Hard 410Hard 410Hard 410410410
8410 and HardfacedStellite410410410
8A410 and HardfacedNi-Cr410410410
9MonelMonelMonelMonelMonel
10316316316316316
11MonelStelliteMonelMonelMonel
12316 and HardfacedStellite316316316
13Alloy 20Alloy 20Alloy 20Alloy 20Alloy 20
14Alloy 20 and HardfacedStelliteAlloy 20Alloy 20Alloy 20
15304 and HardfacedStelliteStellite304304
16316 and HardfacedStelliteStellite316316
17347 and HardfacedStelliteStellite347347
18Alloy 20 and HardfacedStelliteStelliteAlloy 20Alloy 20

Refer Gate Valve Dimensions Chart, Leading Supplier of Metal Seated Knife Gate Valve

Material Selection of Gate Valve

TRIMRECOMMENDED SERVICE
13% Cr, Type 410 Stainless SteelFor oil and oil vapors and general services with heat treated seats and wedges.
13% Cr, Type 410 plus HardfacingUniversal trim for general service requiring long service life up to 1100°F (593°C).*
Type 316 StainlessFor liquids and gases which are corrosive to 410 Stainless Steel, up to 1000°F (537°C).*
MonelFor corrosive service to 842°F (450°C) such as acids, alkalies, salt solutions, etc.
Alloy 20For corrosive service such as hot acids -49°F to 608oF (-45°C to 320°C).
NACESpecially treated 316 or 410 trim combined optionally with B7M Bolts and, 2HM nuts to meet NACE MR-01-75 requirements.
Full StelliteFull hard faced trim, suitable for abrasive & severe services up to 1200°F (650°C).

Different Types of Gate Valves

Stainless Steel 304 Compression Gate Valves

Stainless Steel 304 Compression Gate Valves

Stainless Steel 316 Solid Wedge Gate Valve

Stainless Steel 316 Solid Wedge Gate Valve

CF8M Stainless Steel Flexible Wedge Gate Valve

CF8M Stainless Steel Flexible Wedge Gate Valve

CF8 Stainless Steel Split Wedge Gate Valve

CF8 Stainless Steel Split Wedge Gate Valve

ASTM A351 CF8M 316 Pneumatic Gate Valves

ASTM A351 CF8M 316 Pneumatic Gate Valves

A351 CF8 304 Quick Opening Gate Valve

A351 CF8 304 Quick Opening Gate Valve

Class 150 Gate Valve Dimensions

SizesLL1 (BW)H (Open)W
2″7 (180)8-1/2 (216)14-1/2 (368)8 (200)
2-1/2″7-1/2 (190)9-1/2 (241)17 (432)8 (200)
3″8 (200)11-1/8 (283)18 (457)8-7/8 (225)
4″9 (230)12 (305)22 (559)11 (279)
5″10 (254)15 (381)26 (660)12-3/4 (325)
6″10-1/2 (266)15-7/8 (403)30 (762)14 (356)
8″11-1/2 (290)16-1/2 (420)38-1/2 (978)14 (356)
10″13 (330)18 (457)46 (1168)18 (457)
12″14 (356)19 (502)55-1/4 (1403)20 (508)
14″15 (381)22 (559)60 (1524)21-1/2 (546)
16″16 (407)24 (610)74-7/8 (1902)24 (610)
18″17 (432)26 (660)79 (2007)27 (686)
20″18 (457)28 (711)87-1/2 (2223)28 (711)
24″20 (508)32 (813)105 (2667)31-1/2 (800)
30″24 (610)38 (965)130 (3302)43 (1092)
36″28 (711)44 (1118)162 (4115)51 (1295)
GEAR OPERATOR RECOMMENDED FOR SIZE 10″ AND ABOVE

Dimensions Chart of Class 300 Gate valve

SIZESL/L1H (OPEN)W
2″8-1/2 (216)16 (407)7-7/8 (200)
2-1/2″9-1/2 (241)17-3/8 (442)7-7/8 (200)
3″11-1/8 (283)19-3/4 (501)8-7/8 (225)
4″12 (305)23-3/8 (594)9-7/8 (251)
5″15 (381)23-3/4 (603)12-1/2 (318)
6″15-7/8 (403)32-1/8 (816)14 (356)
8″16-1/2 (420)41 (1041)15-3/4 (400)
10″18 (457)48-3/8 (1229)17-3/4 (451)
12″19-3/4 (501)57 (1448)20 (508)
14″30 (762)62-1/2 (1588)22 (559)
16″33 (838)69 (1753)25 (635)
18″36 (914)80-1/2 (2045)28 (711)
20″39 (991)91 (2311)35-1/2 (902)
24″45 (1143)120-1/2 (3061)43 (1092)
GEAR OPERATOR RECOMMENDED FOR SIZE 8″ AND ABOVE

Dimensions Table of Class 600 Gate valve

SIZESL/L1H (OPEN)W
2″11-1/2 (290)16-1/2 (420)7-7/8 (200)
2-1/2″13 (330)18 (457)8-7/8 (225)
3″14 (356)20-1/8 (511)9-7/8 (251)
4″17 (432)25 (635)14 (356)
5″20 (508)30-1/2 (775)15-3/4 (400)
6″22 (559)33-5/8 (854)17-3/4 (451)
8″26 (660)42-3/8 (1076)20 (508)
10″31 (787)49 (1245)25 (635)
12″33 (838)68-1/2 (1740)27 (686)
14″35 (889)69 (1753)31-1/2 (800)
16″39 (991)74 (1880)35-1/2 (902)
18″43 (1092)84-1/4 (2140)43 (1092)
20″47 (1194)93-1/2 (2375)51 (1295)
24″55 (1397)110 (2794)51 (1295)
GEAR OPERATOR RECOMMENDED FOR SIZE 8″ AND ABOVE

Class 900 Gate valve Dimensions Chart

SIZESL/L1H (OPEN)W
2″14-1/2 (368)26 (660)10-1/4 (260)
3″15 (381)26-3/8 (670)11-1/2 (292)
4″18 (457)30 (762)14 (356)
6″24 (610)40-3/4 (1035)20 (508)
8″29 (737)51 (1295)24 (610)
10″33 (838)61 (1549)27 (686)
12″38 (965)69-1/2 (1765)31-1/2 (800)
14″40-1/2 (1029)77 (1956)35-1/2 (902)
16″44-1/2 (1130)82-3/4 (2102)43 (1092)
GEAR OPERATOR RECOMMENDED FOR SIZE 6″ AND ABOVE
Ready Stock of Gate Valve Wedge Material, Stockholder of Parallel Gate Valves

Dimensions of Class 1500 Gate valve

SIZESL/L1H (OPEN)W
2″14-1/2 (368)21-1/2 (546)11-1/2 (290)
3″18-1/2 (470)27-1/8 (689)14 (356)
4″21-1/2 (546)31-1/2 (800)20 (508)
6″27-3/4 (705)45 (1143)24 (610)
8″32-3/4 (832)53-1/2 (1359)27 (686)
10″39 (991)65 (1651)35-1/2 (902)
12″44-1/2 (1130)74 (1880)43 (1092)
14″49-1/2 (1257)83-1/2 (2121)51 (1295)
16″54-1/2 (1384)88 (2235)63 (1600)
GEAR OPERATOR RECOMMENDED FOR SIZE 6″ AND ABOVE

Class 2500 Gate valve Dimensions

SIZESL/L1H (OPEN)W
2″17-3/4 (451)24-7/8 (632)12 (305)
3″22-3/4 (578)36 (914)20 (508)
4″26-1/2 (673)41-1/2 (1054)20 (508)
6″36 (914)57 (1448)24 (610)
8″40-1/4 (1022)63-3/8 (1610)24 (610)
GEAR OPERATOR RECOMMENDED FOR SIZE 6″ AND ABOVE

Advantages of Gate valve

  • Easy to maintain and disassemble
  • Optimal as a shut off valve
  • Bidirectional
  • Low cost
  • Can be used with slurries and viscous liquids
  • Available in large sizes
  • Inherently fire-safe (when used with a metal sheet)

Disadvantages of Gate valve

  • Slow open and close time
  • Low-pressure limitations
  • Erosion of the seat and disk can occur
  • Poor throttling characteristics
  • Difficult to repair
Distributor of Metal Seated Wedge Gate Valve, View Gate Valve Weights Chart

Applicable codes and standards for gate valve design

  • Valve Design: API 600/ API 602/ BS5352/ API 603/ API6D/ IS780 /BS 1414 / BS 14846
  • Valve Pressure Testing: API 598
  • Valve Pressure Temperature Rating: API B16.34
  • Face to Face Dimensions: ANSI B16.10
  • Flange Drilling: ANSI B16.5 / ASME B 16.47/ BS 10 Table / DIN /IS /JIS Standards
  • Butt/ Socket Welded End: ANSI B16.25 and B16.11
  • Screwed End: ANSI B 1.20.1 (BSP/NPT)