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Butterfly Valve

Butterfly Valve

Category

Butterfly valves for compact quarter-turn isolation and flow control with resilient and metal-seated design options.


Butterfly valves are often chosen when a piping system needs reliable shutoff or flow regulation without the weight and space of a larger linear-motion valve. Their quarter-turn operation makes them practical for both manual and automated service, especially on medium- and large-diameter lines. SVR Global supports these requirements as a Butterfly Valve Manufacturer in USA, supplying designs for water, process, marine, energy and general industrial systems.

What is a Butterfly Valve?

A butterfly valve is a quarter-turn rotary valve that uses a circular disc mounted on a shaft to control flow through a pipeline. Turning the shaft through approximately 90 degrees moves the disc from the open position to the closed position. The disc can also be held at intermediate angles when controlled throttling is required.

Because the disc remains inside the flow path, a butterfly valve is compact and has a short face-to-face dimension compared with many gate or ball valve arrangements. The final design is selected according to pressure, temperature, required shutoff, fluid characteristics and the amount of control needed.

Types of Butterfly Valve 

  • Concentric butterfly valve 

  • Double offset butterfly valve 

  • Triple offset butterfly valve     

Butterfly Valve Features

·          Quarter-turn operation for quick opening and closing

·        Compact construction with a short face-to-face dimension

·        Suitable for both isolation and controlled throttling

·        Resilient-seated and metal-seated sealing options

·        Manual, gear, pneumatic and electric operating arrangements

·        Wafer, lug and flanged body types

Butterfly Valve Specifications

Specification

Available Configuration / Standard

Size Range

DN50-DN1800

Pressure Rating

ASME Class 150-900, PN10-PN63 

Material

Carbon Steel, Stainless Steel, Cast Iron, Ductile Iron, Duplex Steel, Super Duplex Steel

Grades

ASTM A216 WCB/WCC; ASTM A351 CF8/CF8M/CF3/CF3M; ASTM A126 Class B; ASTM A536 65-45-12; ASTM A995 4A/5A/6A

Body Styles

Wafer, Lug, Double Flanged

Disc Design

Concentric, Double Offset, Triple Offset

Seat / Seal Materials

EPDM, NBR, PTFE, RPTFE, FKM/Viton, Metal

Operation

Lever, Gear/Worm Gear, Pneumatic Actuated, Electric Actuated

Standards

API 609, ASME B16.34, API 598, ISO 5208, ASME B16.5, ASME B16.47, ISO 5211, MSS SP-67, MSS SP-68, AWWA C504

How Disc Design Affects Performance

In a concentric design, the disc passes through the seat during rotation, making it a straightforward option for many general-service applications. A double-offset arrangement moves the shaft away from the centreline in two directions, reducing seat contact as the disc opens and helping limit wear.

Triple-offset designs take this further by changing the sealing geometry so that the seat and sealing surface disengage with minimal rubbing. This approach is commonly used for higher temperatures, larger pressure differentials and services where a metal-seated shutoff arrangement is preferred.

Industries Using Butterfly Valves

·             Oil & Gas

·        Petrochemical & Refining

·        Water & Wastewater

·        Power Generation

·        Marine & Offshore

·        Chemical Processing

·        Mining & Mineral Processing

·        Industrial Utility Systems



Showing all 8 products

Double Flanged Butterfly Valve

Double Flanged Butterfly Valve

Double Flanged Butterfly Valve Body: DI, CF8, CF8M, SS304, SS316 Bushing: PTFE Seat: EPDM, NBR Stem: Stainless Steel Disc: DI, CF8, CF8M, SS304, SS316 Pin: Stainless Steel Bushing: PTFE O-Ring: NBR Nominal Diameter: DN65 to DN400 Nominal Pressure: PN10 to PN64, Class150 to Class2500 End Connection: Flanged Operation: Manual, Gear Operated, Electric Actuated, Pneumatic Actuated Dimension Class150 Unit: mm DN A B C L фk N- фd 65 72 136 32 112 139.7 4-ф19 80 88 146 32 114 152.4 4-ф19 100 96.5 158 32 127 190.5 8-ф19 125 115 179 32 140 215.9 8-ф22 150 126 197 32 140 241.3 8-ф22 200 161 230 45 152 298.4 8-ф22 250 199 271 45 165 361.9 12-ф25 300 215 305 45 178 431.8 12-ф25 350 261 350 45 190 476.2 12-ф28 400 290 381 51 216 539.7 16-ф28

DETAILS
Triple Eccentric Butterfly Valve

Triple Eccentric Butterfly Valve

Triple Eccentric Butterfly Valve Body: WCB, CF8, CF8M Body Surface: Stainless Steel Seal: Stainless Steel+RPTFE Disc: Stainless Steel Stem: Stainless Steel Pin: Stainless Steel Hexagon Socket Screw: B8 Bonnet: Stainless Steel Bushing: Stainless Steel Packing: Graphite Gland: Carbon Steel Bolt: A193 B7 Nut: A194 2H Yoke: Carbon Steel Nominal Diameter: DN300 to DN600 Nominal Pressure: PN10 to PN64 End Connection: Flanged Dimension PN25 Unit: mm DN L D D1 D2 b f n-d H1 H 300 178 485 430 395 34 4 16-30 480 780 400 216 620 550 505 40 4 16-36 550 910 500 229 730 660 615 48 4 20-36 680 1090 600 267 845 770 720 58 5 20-39 750 1210 700 292 960 875 820 50 5 24-42 820 1350 800 318 1085 990 930 54 5 24-48 910 1520

DETAILS
Lug Butterfly Valve

Lug Butterfly Valve

Lug Butterfly Valve Body: Cast Iron, Ductile Iron, Stainless Steel, Carbon Steel Bushing: PTFE Seat: EPDM, NBR, PTFE Stem: SS304, SS316, SS410, SS420 Disc: Cast Iron, Ductile Iron, Stainless Steel, Carbon Steel Pin: Stainless Steel O-Ring: NBR Bushing: PTFE Bolts: Stainless Steel Packing: Graphite, PTFE Gasket: Stainless Steel Nominal Diameter: DN40 to DN300 Nominal Pressure: Class150 to Class2500, PN10 to PN64 End Connection: Wafer, Lug, Flanged Dimension PN10 Unit: mm DN A B C L ФK N-M 40 70 164 32 33 110 4-M16 50 80 169 32 43 125 4-M16 65 89 176 32 46 145 4-M16 80 95 183 32 46 160 8-M16 100 114 201 32 52 180 8-M16 125 127 214 32 56 210 8-M16 150 139 229 32 56 240 8-M20 200 175 257 45 60 295 8-M20 250 203 280 45 68 350 12-M20 300 242 327 45 78 400 12-M20

DETAILS
Wafer Butterfly Valve

Wafer Butterfly Valve

Wafer Butterfly Valve Body: CI, DI, SS304, SS316, CF8, CF8M Disc: CI, DI, SS304, SS316, CF8, CF8M Shaft: SS410, SS304, SS316 Pin: Stainless Steel Seat: EPDM Packing: Graphite O-Ring: NBR Gasket: Stainless Steel Handle: Carbon Steel Nominal Diameter: DN50 to DN400 Nominal Pressure: Class150 to Class2500, PN10 to PN64 End Connection: Wafer, Lug, Flanged Dimension Class150 Unit: mm DN фDN фD L H1 H2 H3 ФD1 n- фd 50 52.9 95 43 135 63 28 120.5 4-ф20 65 64.5 108 46 148 70 28 139.5 4-ф20 80 78.8 125 46 160 78 28 152.5 4-ф20 100 104 156 52 173 100 28 190.5 8-ф20 125 123.3 182 56 197 125 28 216 8-ф22 150 155.6 206 56 207 126 28 241.5 8-ф22 200 202.5 262 60 240 152 35 298.5 8-ф22 250 250.5 322 68 280 186 35 362 12- ф25 300 301.5 372 78 338 210 35 432 12- ф25 350 333.3 420 78 362 256 35 476 12- ф28 400 389.6 472 102 410 294 115 540 16- ф28  

DETAILS
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