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Features

The MSD-II is a pneumatic, spring-opposed diaphragm actuator operating from plant air. Excellent long-term accuracy and reliability is achieved through the use of multiple springs in the actuator.

The rugged one-piece yoke, the pressed steel diaphragm case and the special nylon reinforced diaphragm provide dependable, high thrust performance. Additionally, the precision formed diaphragm eliminates friction and reduces variations in the effective area during operation which, in turn, results in exceptional linearity.

An optional top or side-mounted manual override is available on both direct and reverse acting actuators. Six different sizes of the MSD-II actuators with various accessories can virtually satisfy all application requirements.

Severe Service ; As a multi-spring type, Operation is precise and repeatability is excellent Minimizing the hysteresis error.

Solutions ; The pressure-tight chamber to which air pressure is connected has a small volume for fast response.

Technology ; All parts are engineered and tested for long life under millions of cycles.

Specifications

- Type : Multi-spring opposed rolling Diaphragm
- Size : Ø250, Ø290, Ø340, Ø400, Ø500, Ø650
- Action : Direct Acting(DA Reverse Acting(RA)
- Operating Temperature : -30℃ to 80℃
- Operating Pressure : Min. 1.4㎏/㎠ ~ Max. 3.5㎏/㎠
- Maximum Stroke : 0.8 in. to 5 in. (20mm to 130mm)
- Manual Override : Top mounted (all sizes) or Side mounted(400, 500, 650 only)
- Accessories : Positioner, Filter Regulator, Solenoid valve, Limit Switches, Position Transmitter, Booster and Transducer are available for actuator mounting.

Features

Severe Service ; Many valves are marketed for critical service control, but few can provide the complete solution needed for the grueling conditions of Severs Service. The DRAG 100D Valve was designed solely for this purpose to meet your specific control valve needs. Whatever your application, for severe service control, there is only one intelligent choice.

Solutions ; The DRAG 100D control valve provides the complete solution because it eliminates problems of cavitation, Noise, erosion and vibration by effectively controlling fluid velocity.

Technology ; The technologically advanced design of the DRAG disk stack trim controls fluid velocities by forcing the fluid through a series of right angle turns. The exact number of turns is scientifically calculated to achieve low fluid velocities consistent with the needs of the application. This assures long, trouble-free control valve life.

Specifications

- Pressure Drop Stages : Up to 40
- Valve size : NPS 1/4 (DN 8) to NPS 36 (DN 900)
- Pressure Rating : ANSI Class 150 to 4500(DIN 10 to 400)
- Fluid : Metal Seated : -250℉ to 1050℉
- Temperature Range : -160℃ to 565℃
- Body Type : Globe or Angle design
- End Connections :
ASME B16.5, Flanged end, RF/ RTJ
ASME B16.11, Socket Welding end
ASME B16.25, Butt-welding end
Special ends including various clamped–joint hub configurations
- Seat Face Design : Metallic or Soft Seated
- Plug Design : Unbalanced, Balanced, Pressurized Seated
- Characteristic : Linear, Equal %, Quick Open or Custom Design
- Range ability : Minimum of 30:1, Up to 100:1 for larger valves designed to meet application needs
- Materials : Carbon Steel, Chrome moly, Stainless steel, and all other ANSI B16.34 Material
- Shutoff Capabilities :
Unbalanced Plug ; Soft Seated - ANSI Class VI, Metal seated – ANSI Class V
Balanced Plug ; Soft Seated - ANSI Class VI, Metal seated – ANSI Class IV or V, MSS-SP-61
Pressurized Seated Plug ; Metal seated – MSS-SP-61
- Maximum : Metal seated : Up to full ANSI rating

Features

Quality Assurance/ Quality Control ; 800D valves meet the ANSI B16.34 standard. Hydrostatic tests are performed in accordance with of "Valves-Flanged, Threaded, and Butt-welding End". This encompasses the dimensions, construction, testing and rating of all valves supplied. We also perform ANSI standard seat leakage and hydrostatic tests on every valve we build, and operability tests are run on each valve and actuator leaving our factory. Special tests are readily available to meet your specific project needs, including non-destructive testing of valve components and performance testing of actuator controls.

DRAG® Velocity control trim has long been an industry preference for solving valve problems. Whether problems are due to cavitation damage, noise, poor control, or vibration, this valve will help. The 800D makes it easier to bring DRAG® technology solutions to you.

Our proven technology, in this pre-engineered package, allows your plant to receive many of the benefits that have traditionally come only with a custom designed valve. Designed with up to eight turns, this tortuous path multi-stages pressure reduction capability is unmatched in ANSI Class 600 control valves. Configured with either flow to open or flow to close trims, the valve is well suited to steam, gas or liquid flow. Flow to close is typically used for liquid service, and flow to open for steam and gas. The flanged body design is configured to meet ISA S75.03 face to face dimensions. Using a spring and diaphragm actuator, the complete valve is easier to fit into your plant systems, whether a new or replacement application. Weld end body configurations are available with socket weld ends through NPS 2 size and butt-weld ends through NPS 8.

The MSD-II actuator is standard for this product. This multi-spring diaphragm.
Unit is pre-selected by valve size, Built in reverse (spring close) or direct (spring open) acting configurations, this unit provides control and seat loading in line with typical industry values. Refer to the MSD-II catalog for more information.

Standard materials allow compliance with NACE MR 0175 and are also suitable for Power plant and Refinery applications. The soft seat option meets FCI 70-2 Class VI seat leakage.

Use VALSIZ computer program for ease of sizing and selection of your application.

Specifications

- Valve size : NPS 1(DN 25) to NPS 8(DN 200)
- Pressure Rating : ANSI Class 150, 300, 600 (DIN and JIS available)
- End Connections :
ASME B16.5, Flanged end, Raised Face
ASME B16.11, Socket Welding end
ASME B16.25, Butt-welding end
- Temperature : -20℉ to 450℉ (-29℃ to 232℃)
- Flow Characteristic : Linear, or Characterized to suit your application
- Range ability : From 30:1 to 100:1
- Seat Leakage : Standard -ANSI Class IV, Option -ANSI Class VI

Features

Anti-Cavitation ; Hardened material and fully characterized design to minimize cavitation damage caused by very high pressure drop.
One stage, two stages and multi-stages are available depend on process condition. Linear characteristic is most commonly used but EQ% is also available to meet desired flow characteristic.

Low-Noise ; Flexible media. High pressure drop or massive flow application would cause high noise and vibration due to excessive kinetic energy. ISA recommend to control this energy by velocity head concept. CCI design hole diameter, arrangement and number of stages accordingly. Linear characteristic is most commonly used but EQ% is also available to meet desired flow characteristic.

Tight shutoff ; A variety of shutoff classes from ANSI IV through VI are available to meet application requirements.

Sour Gas/ Corrosive Fluid Capable ; The wide choice body and trim materials allows the 840G to be applied to corrosive/ sour gas services with full compliance to NACE requirements.

Quality Assurance/ Quality Control ; All series 840H valves meet the ANSI B16.34 standard of "Valves-Flanged, Threaded, and Butt-welding End". This encompasses the dimensions, construction, testing and rating of all valves supplied. We also perform ANSI standard seat leakage and hydrostatic tests on every valve we build, and operability tests are run on each valve and actuator leaving our factory. Special tests are readily available to meet your specific project needs, including non-destructive testing of valve components and performance testing of actuator controls.

Specifications

The series 840H Drilled hole cage(Anti-cavitation) valve is specially designed to prevent cavitation damage and to minimize hydro dynamic noise and vibration in case of severe service liquid applications. Also the series 840H Drilled hole cage(Low-noise) valve is specially designed to reduce gaseous noise and vibration effectively in case of high pressure drop or massive flow application for flexible media like gas on steam. These special trim design has been proven in a wide variety of applications like Chemical, Power plant, Nuclear Industries, and wherever high performance and reliability is required.

- Valve size : NPS 1/2(DN 15) to NPS 20(DN 500)
- Pressure Rating : ANSI Class 150, 300, 600, 900, 1500 and 2500
- End Connections :
ASME B16.5, Flanged end, RF/RTJ
ASME B16.11, Socket Welding end
ASME B16.25, Butt-welding end
- Materials :
ASTM A216 WCB, WCC
ASTM A271 WC6, WC9
ASTM A351 CF8(M), CF3(M), CN7M
ASTM A352 Duplex
ASTM A352 LCB, LCC
Hastelloy -B/ C
- Trim Design :
Multi-path & Multi-stage design
Anti-cavitation, Low-Noise
- Seat Leakage : Standard -ANSI Class IV, Option -ANSI Class V or VI

Features

DongsanValve’s Cast steel valve are constructed with design of API 600, ASME B16.34 & API 6D. And It’s built up with BS 1868 additionally for Swing check valve.

Standard trim is API trim 8 for carbon steel valves, API trim 5 for chrome alloy valves, and API trim 10 for CF8M (T316) valves for optimal performance under normal conditions. Other trim materials available on request.

Seat faces lapped for smooth finish and superior sealing. Wall thickness per heavy wall API 600 requirements. Swivel disc for improved seat alignment and longer life. Each valve is shell and seat pressure tested per industry standard API 598. Check valve are suitable for service in horizontal line with cap vertical or in a vertical line with flow upward. Carrier Pin is confined within the body wall and is not accessible from the exterior, thus no side body penetrations, eliminating a common leak path, on classes 150 through 600.

End Flanges have the following raised faces per ASME B16.5: Classes 150-300: 1/16” (2mm) Classes 600-1500: 1/4” (7mm).

Each valve has a unique certification number that is traceable to the valve certification sheet which includes MTR data, pressure test, inspection result and certificate of conformance.
Other available options as follows:
-Alternate valve materials such as chrome and stainless steel alloys
-Alternate trim materials
-Bypass, drain and other auxiliary connections
-Gear, motor, and cylinder actuators available
-NACE service
-Special cleaning for applications such as oxygen or chlorine
-Other options available as specified

Specifications

Bolted Cover/ Swing Type, Lift Type & Piston Type/ Outside input Hinge Pin and Arm joint/ Full Port/ Flanged Ends or Butt-weld Ends

- Size Range : NPS 2(DN 50) to NPS 30(DN 750)
- Pressure Rating : ASME Class 150 to 1500
- Wall Thickness & General Design Code : API 600, ASME B16.34
- Face-to-face or End-to-end : ASME B16.10
- Flanged End : ASME B16.5 Flanged End, RF/RTJ
- Buttwelding End : ASME B16.25
- Valve Inspection and Test : API 598
- Materials : CS, LTCS, SS & Duplex, Etc..

Features

DongsanValve’s Cast steel valve are constructed with design of API 600, ASME B16.34 & API 6D. And It’s built up with BS 1873 additionally for Globe valve. Bolted Bonnet, Outside Screw & Yoke is applied to Globe valve basically. Rising handwheel to be provided.

Standard trim is API trim 8 for carbon steel valves, API trim 5 for chrome alloy valves, and API trim 10 for CF8M (T316) valves for optimal performance under normal conditions. Other trim materials available on request. Wall thickness per heavy wall API 600 requirements.

Seat faces lapped for smooth finish and superior sealing. Swivel disc for optimal seating and longer seat life. Stems of hand wheel operated valves are rotating / rising design. Each valve is shell, seat and backseat pressure tested per industry standard API 598. Gland is two piece gland / gland flange design for optimal alignment and uniform packing compression.

End Flanges have the following raised faces per ASME B16.5: Classes 150-300: 1/16” (2mm) Classes 600-1500: 1/4” (7mm). Weld ends are available per ASME B16.25 or per customer’s specification.

Impactor hand wheel design standard on the following sizes to assist seating.
8” to 12” class 150
6” to 12” class 300
4” to 10” 600
For larger sizes or pressure classes, gears are standard.

Each valve has a unique certification number that is traceable to the valve certification sheet which includes MTR data, pressure test, inspection result and certificate of conformance.
Other available options as follows:
-Alternate valve materials such as chrome and stainless steel alloys
-Alternate trim materials
-Bypass, drain and other auxiliary connections
-Gear, motor, and cylinder actuators available
-NACE service
-Special cleaning for applications such as oxygen or chlorine
-Other options available as specified

Specifications

Bolted Bonnet/ Plug type Disc/ Outside Screw & Yoke/ Full Port/ Flanged Ends or Butt-weld Ends/ Operators : Handwheel, Gear or Actuator

- Size Range : NPS 2(DN 50) to NPS 30(DN 750)
- Pressure Rating : ASME Class 150 to 2500
- Wall Thickness & General Design Code : API 600, ASME B16.34
- Face-to-face or End-to-end : ASME B16.10
- Flanged End : ASME B16.5 Flanged End, RF/RTJ
- Buttwelding End : ASME B16.25
- Valve Inspection and Test : API 598
- Materials : CS, LTCS, SS & Duplex, Etc..

Features

DongsanValve’s Cast steel valve are constructed with design of API 600, ASME B16.34 & API 6D. Bolted Bonnet, Outside Screw & Yoke is applied to Gate valve basically. Non rising hand wheel to be provided.

Flexible Wedge for improved seating and ease of operation, especially in high temperature service. Wedges are accurately guided thru the entire stroke. Standard trim is API trim 8 for carbon steel valves, API trim 5 for chrome alloy valves, and API trim 10 for CF8M (T316) valves for optimal performance under normal conditions. Other trim materials available on request.

Seat faces lapped for smooth finish and superior sealing. Stems are non-rotating with surface finish to maximize packing seal for low fugitive emissions. Bonnet and Yoke arms designed for ease of gear, motor or cylinder actuator adaptation. Each valve is shell, seat and backseat pressure tested per industry standard API 598. Gland is two piece gland / gland flange design for optimal alignment and uniform packing compression.

End Flanges have the following raised faces per ASME B16.5: Classes 150-300: 1/16” (2mm). Classes 600-1500: 1/4” (7mm). Weld ends are available per ASME B16.25 or per customer’s specification. Each valve has a unique certification number that is traceable to the valve certification sheet which includes MTR data, pressure test report, inspection report and certificate of conformance.

Other available options as follows:
- Alternate valve materials such as chrome and stainless steel alloys/ Alternate trim materials/ Bypass, drain and other auxiliary connections/ Gear, motor, and cylinder actuators available/ NACE service /Special cleaning for applications such as oxygen or chlorine/ Other options available as specified.

Specifications

Bolted Bonnet/ Flexible or Solid Wedge/ Outside Screw & Yoke/ Full Port/ Flanged Ends or Buttweld Ends/ Operators : Handwheel, Gear or Actuator

- Size Range : NPS 2(DN 50) to NPS 36(DN 900)
- Pressure Rating : ASME Class 150 to 2500
- Wall Thickness & General Design Code : API 600, ASME B16.34
- Face-to-face or End-to-end : ASME B16.10
- Flanged End : ASME B16.5 Flanged End, RF/RTJ
- Buttwelding End : ASME B16.25
- Valve Inspection and Test : API 598
- Materials : CS, LTCS, SS & Duplex, Etc..

Features

Simple-to-Change Capacity or Characteristic ; A simple cage change is all that is required to change between reduced and full-sized capacity trims or between linear and equal percentage characteristics.

Tight Shutoff ; A variety of shutoff classes from ANSI IV through VI are available to meet application requirements.

Sour Gas/ Corrosive Fluid Capable ; The wide choice body and trim materials allows the 840G to be applied to corrosive/ sour gas services with full compliance to NACE requirements.

Easy Maintenance ; Top-entry design and a cage-retained seat ring allow for quick inspection or trim change.

Quality Assurance/ Quality Control ; All series 840G valves meet the ANSI B16.34 standard of "Valves-Flanged, Threaded, and Butt-welding End". This encompasses the dimensions, construction, testing and rating of all valves supplied. We also perform ANSI standard seat leakage and hydrostatic tests on every valve we build, and operability tests are run on each valve and actuator leaving our factory. Special tests are readily available to meet your specific project needs, including non-destructive testing of valve components and performance testing of actuator controls.

Specifications

The series 840G Cage-guided valve is specially designed using the most recent refinements in control valve technology. It is used to control a wide variety of relatively clean liquids and gases at high-pressure differentials.

The design of the 840G valve is very flexible in that it allows a variety of trim types to be installed in the body. In addition, its cage-guided construction reduces plug vibration and provides stable performance throughout travel. All trims of the 840G valve have a quick change design so it guarantees convenient repair and easy replacement of trim. The 840G valve is available in size NPS 1/2(DN 15) ~ NPS 20(DN 500) ANSI Class 150 ~ 2500, with either flanged or welding end connections.

- Valve size : NPS 1/2(DN 15) to NPS 20(DN 500)
- Pressure Rating : ANSI Class 150, 300, 600, 900, 1500 and 2500
- End Connections :
ASME B16.5, Flanged end, RF/RTJ
ASME B16.11, Socket Welding end
ASME B16.25, Butt-welding end
- Materials :
ASTM A216 WCB, WCC
ASTM A271 WC6, WC9
ASTM A351 CF8(M), CF3(M), CF7M
ASTM A352 Duplex
ASTM A352 LCB, LCC
Hastelloy -B/ C
- Flow Characteristic : Equal Percentage, Linear or Quick Open
- Seat Leakage : Standard -ANSI Class IV, Option -ANSI CLass V or VI