The function of Manual Hydraulic Pump is to convert the mechanical energy of power machine (such as motor and internal combustion engine) into the pressure energy of liquid. Working principle:the CAM is driven by an electric motor. When the CAM pushes the plunger upward, the sealing volume formed by the plunger and the cylinder body decreases, and the oil is pushed out of the sealing volume through the one-way valve to the desired place. When the CAM rotates to the lower part of the curve, the spring forces the plunger down to a certain degree of vacuum, and the oil in the tank enters the sealing volume under the action of atmospheric pressure. The CAM keeps the plunger up and down, the sealing volume decreases and increases periodically, and the pump keeps absorbing and discharging oil.
Manual Hydraulic Pump Manual Hydraulic Pump,Pressure Instruments,Manual Power Hydraulic Pressure Pump,Hand Operated Hydraulic Pump,Hydraulic Power,Small Hydraulic Hand Pump Jining Dongda Electromechanical Co.,Ltd. , http://www.coal-mine-equipment.com
The seal ring is made of soft and hard layered stainless steel sheet and elastic sealing gasket, making it have the advantages of metal hard seal and elastic seal. The seat sealing face is subject to integral overlaying welding of temperature and corrosion resistant alloy materials.
The contact face of the seal ring and seat of the valve adopts a "cone-in-cone" structure, and the two cones are both bevel cones. Â
The contact angle between the seal ring and metal seat produces light "wedge effect", making the seal ring produce flexible movement and radial compression. Thanks to the even contact between the seat and seal ring, the tightest shut-offcan be realized by using the lowesttorque, featured by high reliability and stability and long sealing face service life. The second type is to adopt a soft seal structure. Its seal structure is similar to that of the multi-level compound seal buttery valve, with the difference that the seal ring is made of integral PTFE materials, which are more suitable for applications with high on-off frequency and high requirements for sealing face corrosion resistance. The third type is to adopt a metal hard seal structure.
The sealing pair does not contain any nonmetals. The seat sealing face and the seal ring sealing face are subject to Stellite overlaying welding, ensuring anti-erosion during the use. The sealing pair adopts a "hard-contact-hard" structure. Once the valve is closed, there is no need to adjust through the closing position, and the sealing is very reliable. The valve is widely applied in such industries as petroleum, chemical industry, light industry, oil terminal, metallurgy, electric power, etc.
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Feature
1. Compact structure: low volume, light weight and easy maintenance
2. Smooth flow channel: low flow resistance, low pressure drop and high flow
3. Three-eccentric multi-level compound seal butterfly valve: It uses the unique cam effect, so that during the valve's 90 ˇtravel the seat is totally disengaged from the disc seal ring without any friction.
   Three-eccentric soft seal butterfly valve: The sealing pair is made of integral PTFE materials, which are suitable for applications with high medium cleanliness, frequent valve on-off and high requirements for sealing pair corrosion resistance. Especially it can ensure that its service life is basically the same as that of the pipe in the thermal system.
   Three-eccentric metal seal butterfly valve: The sealing pair adopts a full metal seal structure. The sealing pair adopts a "hard-contact-hard" structure as shown in figure 1 pneumatic three-eccentric butterfly valve. The seal has a long service life. It is suitable for service conditions where the medium working temperature is extreme, the erosion is severe and there is the occurrence of "crystallization".
4. Strong anti-wear performance: The disc adopts a three-eccentric structure and the sealing face is subject to hard alloy overlaying welding with good anti-wear performance.
5. Valve flow characteristics: Approximate equal percentage. Control and shut-off can be realized.
Â
body  main technical parmaneters
body typeÂ
two-piece,three-pieceÂ
Nominal diameter
DN15~500(NPS1/2~24)
Nominal pressure
PN 1.6~4.0Mpa(Clsaa150~600)
Type of connection
flanged
Material
A216-WCB, A351-CF8, A351-CF8M, A351-CF3,
A351-CF3M, A217-WC6, A217-WC9
Bonnet: standard type
-20~250ºC
high temperature type
250~525ºC
Packing
PTFE, flexible graphite, nickel-based wire reinforced flexible graphite
Trim  main technical parmaneters
Plug type
O straight-through type
Plug material
A182-F304, A182-F316
Seat material/soft seal:
PTFE, RPTFE, PPL
hard seal
:A182-F304, A182-F316
Flow characteristic
quick opening
Rated Cv value:
See table 4 for details.
Rated travel
0~90ºC
Seat Leakage class/soft seal
ANSI B16.104 class VI
Hard seal
ANSI B16.104 class V(hard seal class VI for special orders)
treatment for body
plug.ball.seat.stem etc
Table 1: design and manufacturing standards
Standard
Design and
manufacturing
Face-to-face
dimensions
Flange
dimensions
Pressure and
temperature ratings
Inspection
and testing
Leakage class
  Â
National standards and
 industry standards
GB/T12224
GB/T12238
JB/T8527
GB/T12221
GB/T9112~9124
HG/T20592~20635
SH3406JB/T79
GB/T9124
GB/T12224
JB/T9092
GB/T13927
GB/T4213
American Standard
API609
API609
ASME B16.5
ASME B16.47
ASME B16.34
API598
Â
ANSI/FCI70-2
ASME B16.104
Other national standards
Â
JIS B2002
ISO5752
EN1092
Â
Â
Â
2:
Table 2: Actuator
Model
Item
Cylinder actuator
Electric Actuator
AT/AW
ATK/AWS
Determined according to
ordering requirements
Double-acting
Single action
Usage
,Shut off ,Adjust
,Shut off ,Adjust
Power supply
:0.4~0.7MPa(G)
Air supply: 0.4 ~ 0.7MPa (G)
:220VAC/50HZ,380VAC/50HZ
Power: 220VAC / 50HZ, 380VAC / 50HZ
Connection
:NPT1/4-Φ8, NPT3/8-Φ12, NPT1/2-Φ16
(),.
All pneumatic valves of our company are provided with ferrule fittings connected to air supply pipelines of users. (See the specification of pneumatic valves for the sizes.) The ferrule fittings for air supply can also be supplied according to user requirements.
:
Electrical Connection: With electric actuator configuration or user requirements
Â
:24VDC,220VAC
:4~20mA,4~20mA+HART
:GB/T4213-2008,"C",:±2.0%,:≤2.0%,:≤0.8%,: ≤+2.5%
Shut off: 24VDC, 220VAC
Control with positioner: 4~20mA, 4~20mA+HART
Control with positioner: with positioner index class "C" in accordance with GB/T4213-2008, intrinsic error: ˇ2.0%, hysteresis error: ˇ2.0%, dead band: ˇ0.8%, full travel error: ˇ+2.5%
:4~20mA
Shut off: On / Off
Adjust: 4 ~ 20mA
Action type
:
:
Shut off: When the solenoid valve is powered on, the valve is on or off.
Adjust: The valve is on or off with the increase of positioner input signal.
:
:
Shut off: The valve is on or off when powered on
Adjust: with the input signal increases valve opening or valve off
Allowable ambient
temperature
-40ºC~+80ºC
-40ºC~+80ºC
Accessories
Hand operated mechanism, solenoid valve, electric/pneumatic valve positioner, transponder switch, air filtering pressure relief valve, speed increaser, position holding valve, air control valve, etc.
Hand operated mechanism, transponder switch, input/output switch signal, surge protector, local switch, selector switch, etc.
Â
Â
The three-eccentric high-performance seal butterfly valve is a new generation seal butterfly valve independently designed and developed by our company after referring to advanced technologies at home and abroad. According to different seal assemblies at the body, the butterfly valve has three types: The first type is to adopt a multi-level compound seal structure. Â Â Â
The seal ring is made of soft and hard layered stainless steel sheet and elastic sealing gasket, making it have the advantages of metal hard seal and elastic seal. The seat sealing face is subject to integral overlaying welding of temperature and corrosion resistant alloy materials.
The contact face of the seal ring and seat of the valve adopts a "cone-in-cone" structure, and the two cones are both bevel cones. Â
The contact angle between the seal ring and metal seat produces light "wedge effect", making the seal ring produce flexible movement and radial compression. Thanks to the even contact between the seat and seal ring, the tightest shut-offcan be realized by using the lowesttorque, featured by high reliability and stability and long sealing face service life. The second type is to adopt a soft seal structure. Its seal structure is similar to that of the multi-level compound seal buttery valve, with the difference that the seal ring is made of integral PTFE materials, which are more suitable for applications with high on-off frequency and high requirements for sealing face corrosion resistance. The third type is to adopt a metal hard seal structure.
The sealing pair does not contain any nonmetals. The seat sealing face and the seal ring sealing face are subject to Stellite overlaying welding, ensuring anti-erosion during the use. The sealing pair adopts a "hard-contact-hard" structure. Once the valve is closed, there is no need to adjust through the closing position, and the sealing is very reliable. The valve is widely applied in such industries as petroleum, chemical industry, light industry, oil terminal, metallurgy, electric power, etc.
Â
Feature
1. Compact structure: low volume, light weight and easy maintenance
2. Smooth flow channel: low flow resistance, low pressure drop and high flow
3. Three-eccentric multi-level compound seal butterfly valve: It uses the unique cam effect, so that during the valve's 90 ˇtravel the seat is totally disengaged from the disc seal ring without any friction.
   Three-eccentric soft seal butterfly valve: The sealing pair is made of integral PTFE materials, which are suitable for applications with high medium cleanliness, frequent valve on-off and high requirements for sealing pair corrosion resistance. Especially it can ensure that its service life is basically the same as that of the pipe in the thermal system.
   Three-eccentric metal seal butterfly valve: The sealing pair adopts a full metal seal structure. The sealing pair adopts a "hard-contact-hard" structure as shown in figure 1 pneumatic three-eccentric butterfly valve. The seal has a long service life. It is suitable for service conditions where the medium working temperature is extreme, the erosion is severe and there is the occurrence of "crystallization".
4. Strong anti-wear performance: The disc adopts a three-eccentric structure and the sealing face is subject to hard alloy overlaying welding with good anti-wear performance.
5. Valve flow characteristics: Approximate equal percentage. Control and shut-off can be realized.
Â
body  main technical parmaneters
body typeÂ
two-piece,three-pieceÂ
Nominal diameter
DN15~500(NPS1/2~24)
Nominal pressure
PN 1.6~4.0Mpa(Clsaa150~600)
Type of connection
flanged
Material
A216-WCB, A351-CF8, A351-CF8M, A351-CF3,
A351-CF3M, A217-WC6, A217-WC9
Bonnet: standard type
-20~250ºC
high temperature type
250~525ºC
Packing
PTFE, flexible graphite, nickel-based wire reinforced flexible graphite
Trim  main technical parmaneters
Plug type
O straight-through type
Plug material
A182-F304, A182-F316
Seat material/soft seal:
PTFE, RPTFE, PPL
hard seal
:A182-F304, A182-F316
Flow characteristic
quick opening
Rated Cv value:
See table 4 for details.
Rated travel
0~90ºC
Seat Leakage class/soft seal
ANSI B16.104 class VI
Hard seal
ANSI B16.104 class V(hard seal class VI for special orders)
treatment for body
plug.ball.seat.stem etc
Table 1: design and manufacturing standards
Standard
Design and
manufacturing
Face-to-face
dimensions
Flange
dimensions
Pressure and
temperature ratings
Inspection
and testing
Leakage class
  Â
National standards and
 industry standards
GB/T12224
GB/T12238
JB/T8527
GB/T12221
GB/T9112~9124
HG/T20592~20635
SH3406JB/T79
GB/T9124
GB/T12224
JB/T9092
GB/T13927
GB/T4213
American Standard
API609
API609
ASME B16.5
ASME B16.47
ASME B16.34
API598
Â
ANSI/FCI70-2
ASME B16.104
Other national standards
Â
JIS B2002
ISO5752
EN1092
Â
Â
Â
2:
Table 2: Actuator
Model
Item
Cylinder actuator
Electric Actuator
AT/AW
ATK/AWS
Determined according to
ordering requirements
Double-acting
Single action
Usage
,Shut off ,Adjust
,Shut off ,Adjust
Power supply
:0.4~0.7MPa(G)
Air supply: 0.4 ~ 0.7MPa (G)
:220VAC/50HZ,380VAC/50HZ
Power: 220VAC / 50HZ, 380VAC / 50HZ
Connection
:NPT1/4-Φ8, NPT3/8-Φ12, NPT1/2-Φ16
(),.
All pneumatic valves of our company are provided with ferrule fittings connected to air supply pipelines of users. (See the specification of pneumatic valves for the sizes.) The ferrule fittings for air supply can also be supplied according to user requirements.
:
Electrical Connection: With electric actuator configuration or user requirements
Â
:24VDC,220VAC
:4~20mA,4~20mA+HART
:GB/T4213-2008,"C",:±2.0%,:≤2.0%,:≤0.8%,: ≤+2.5%
Shut off: 24VDC, 220VAC
Control with positioner: 4~20mA, 4~20mA+HART
Control with positioner: with positioner index class "C" in accordance with GB/T4213-2008, intrinsic error: ˇ2.0%, hysteresis error: ˇ2.0%, dead band: ˇ0.8%, full travel error: ˇ+2.5%
:4~20mA
Shut off: On / Off
Adjust: 4 ~ 20mA
Action type
:
:
Shut off: When the solenoid valve is powered on, the valve is on or off.
Adjust: The valve is on or off with the increase of positioner input signal.
:
:
Shut off: The valve is on or off when powered on
Adjust: with the input signal increases valve opening or valve off
Allowable ambient
temperature
-40ºC~+80ºC
-40ºC~+80ºC
Accessories
Hand operated mechanism, solenoid valve, electric/pneumatic valve positioner, transponder switch, air filtering pressure relief valve, speed increaser, position holding valve, air control valve, etc.
Hand operated mechanism, transponder switch, input/output switch signal, surge protector, local switch, selector switch, etc.
Â
Â
Stainless Steel Pneumatic Control Solenoid Gas Valve
Model NO.: deca-b
Work Pressure: High Pressure (10.0mpa< Pn <80.0mpa)
Working Temperature: Low Temperature (-100°C<T<-40°C)
Material of Seal Surface: Metal Hard Sealed
Valve Body: Forge Welding
Application: Industrial Usage
Trademark: DECRRD
Transport Package: Wooden Case
Specification: Customed
Origin: China
HS Code: 8481803990
Model NO.: deca-b
Work Pressure: High Pressure (10.0mpa< Pn <80.0mpa)
Working Temperature: Low Temperature (-100°C<T<-40°C)
Material of Seal Surface: Metal Hard Sealed
Valve Body: Forge Welding
Application: Industrial Usage
Trademark: DECRRD
Transport Package: Wooden Case
Specification: Customed
Origin: China
HS Code: 8481803990
The three-eccentric high-performance seal butterfly valve is a new generation seal butterfly valve independently designed and developed by our company after referring to advanced technologies at home and abroad. According to different seal assemblies at the body, the butterfly valve has three types: The first type is to adopt a multi-level compound seal structure. Â Â Â