Festures of Flanged Butterfly Valve

 

• Bidirectional sealing, no flow direction of the medium;
• Valve body vulcanized EPDM, reliable sealing;
• A dial with an opening indication showing the position of the disc switch;
• Flow characteristics straight line, good regulation performance.

Flanged Butterfly Valve Working Principle

The rotary center of the flanged butterfly disc (that is, the center of the stem) is located on the centerline of the valve body and the sealing surface section of the disc. When the disc is closed, the disc’s circular sealing surface squeezes the synthetic rubber seat so that the seat produces elastic deformation and forms the elastic force to seal the butterfly valve. If the remote control is required, different types of electric devices can be equipped according to different working conditions.

Flanged Butterfly Valve Installation and Commissioning

Clean the inner cavity and sealing cover of the valve before installation. This butterfly valve can be installed on the horizontal, vertical and any Angle pipe, and can be used in both directions. The butterfly valve must be in the closed position during installation to ensure that the disc does not collide with the pipe flange. Make sure the flange welding is correct. After the butterfly valve is installed, it is not allowed to weld the flange again, so as not to burn the rubber parts and the anti-corrosion coating. For specific use, please consult ZECO Valve Group.

Flanged Butterfly Valve Material and Standard

Size Range: 2″~48″

Pressure Rating: 10bar ~ 25bar

Face to Face Dimensions: AMSE B16.10, EN558-1

Flange End Dimension: AMSE B16.1/16.42, AS4087, EN1092-2

Coating: Fusion Bonded Epoxy Coating

Inspection and Test: ISO 5208 / EN 12226-2

Features of Ductile Iron Gate Valve

  

• Visual valve switch easily;
• Quick opening and closing, light torque;
• Brass nut wear-resistant, long switch life;
• Fully covered with EPDM disc, resistant to corrosion.

Ductile Iron Gate Valve Working Principle

Turn the handwheel to open and close the valve disc connected with the stem through the thread of the handwheel and the stem.

Ductile Iron Gate Valve Installation and Commissioning

This valve is usually placed in a higher position from the ground. Pay attention to the installation space in use. When opened, the stem will rise a certain distance. For specific use, please consult ZECO Valve Group.

Ductile Iron Gate Valve Material and Standard

Size Range: 2″~24″
Pressure Rating: 10bar ~ 25bar
Face to Face Dimensions: AMSE B16.10, EN558-1
Flange End Dimension: AMSE B16.1/16.42, AS4087, EN1092-2
Coating: Fusion Bonded Epoxy Coating
Inspection and Test: ISO 5208 / EN 12226-2

Features of Two Way Globe Valve for HVAC

Electric two way globe valve for HVAC realizes constant temperature of heating cycle by controlling heat exchange of heat exchanger.

• Equal percentage characteristic;
• Low Leakage and efficient operation;
• Improve the efficiency of water pump operation and save energy;
• Accurate data, KV value tested by testing institute.

Two Way Globe Valve for HVAC Working Principle

The electric two way globe valve is composed of temperature sensor, proportional integral temperature controller and electric regulating valve. The temperature sensor installed in the return pipe transmits the detected temperature signal to the temperature controller, which constantly compares the detected value of the temperature sensor with the set value, and at the same time constantly outputs a signal to control the opening degree of the electric regulating valve connected to the adjustable, finally making the temperature sensor measured The ambient temperature measured by the temperature sensor is kept within the set temperature range.

Two Way Globe Valve Installation and Commissioning

Specifications are determined according to the design flow rate of the air conditioning box and allowable pressure range of pressure independent balancing valve, and technical parameters are determined according to the requirements. For specific use, please consult Zeco Valve Group.

Two Way Globe Valve Material and Standard

Size Range: 2″~12″

Pressure Rating：10bar ~ 25bar

Face to Face Dimensions:AMSE B16.10, EN558-1

Flange End Dimension :AMSE B16.1/16.42, AS4087, EN1092-2

Coating: Fusion Bonded Epoxy Coating

Inspection and Test：ISO 5208 / EN 12226-2

Features of Pressure Independent Control Valve

• No external energy is required for automatic flow regulation;
• Automatically adjust equipment or pipeline flow to meet the required design flow;
• No need for balance debugging before the system runs;
• Keep pipe flow constant.

PICV Working Principle

When the pressure difference control range is above, the valve tank is completely compressed, the cross-flow area is only the minimum design channel, and the flow rate changes with the pressure difference. When the pressure difference is within the control range, the valve tank moves with the pressure difference, thus changing the flow area and keeping the flow at the set value. Under the pressure differential control range, the valve is fully extended to reveal the maximum overcurrent area, and the flow rate changes with the pressure difference.

PICV Installation and Commissioning

This valve is mainly used for flow regulation and hydraulic balance. It can not be used as a shutoff valve because there is a certain amount of leakage when it is closed. For specific use, please consult Zeco Valve Group.

PICV Material and Standard

Size Range: 1/2″~2″
Pressure Rating: 10bar ~ 25bar

Face to Face Dimensions:EN 558-1, ASME B 16.10

Flange End Dimension: BS 21

Inspection and Test: ISO 5208 / EN 12226-2

Features of Resilient Seated Gate Valve

  

• Full diameter flat – bottom runner, no debris pooling;
• Fully covered EPDM disc, no corrosion;
• Movable disc’s nut, adaptive offset;
• The variable pressure change O-Ring.

Resilient Seated Gate Valve Working Principle

The main seal is entirely rubber covered gate, under the action of operating force and hydraulic pressure produced a small amount of adaptive elastic deformation, and precision casting of the seating stroke excellent sealing effect.

Resilient Seated Gate Valve Installation and Commissioning

If maintenance is required, the o-ring can be replaced online directly on the pipe. When installed, pay attention to the use of temperature and corrosivity, can be used to replace rubber parts suitable for the use of temperature. For specific use, please consult ZECO Valve Group.

Resilient Seated Gate Valve Material and Standard

Size Range: 2″~48″
Pressure Rating: 10bar ~ 25bar
Face to Face Dimensions: AMSE B16.10, EN558-1
Flange End Dimension: AMSE B16.1/16.42, AS4087, EN1092-2
Coating: Fusion Bonded Epoxy Coating
Inspection and Test: ISO 5208 / EN 12226-2

Festures of Wafer Butterfly Valve

• simple and compact in structure, light in weight, easy to assemble and repair;
• Small operation torque, turn 90° portable rapid opening and closing;
• Small flow resistance, the energy saving effect is good;
• Reliable sealing, leakage is zero, long service life.

Wafer Butterfly Valve Working Principle

Large diameter can be increased due to the increase of torque, which can be increased by adding a turbine head or electric actuator. Electric actuators can be equipped with common type, household type, explosion-proof type and regulating type according to different working conditions, which can realize remote control and computer networking.

Wafer Butterfly Valve Installation and Commissioning

This valve must be equipped with butterfly flange. Put the butterfly valve into the middle of the special flange at both ends of the pipeline, and use the double head bolt through the pipeline flange and clamp butterfly valve to lock tightly, then it can be used normally. For specific use, please consult ZECO Valve Group.

Wafer Butterfly Valve Material and Standard

Size Range: 2″~48″

Pressure Rating: 10bar ~ 25bar

Face to Face Dimensions: EN 558-2008

Flange End Dimension: EN1092-2, ISO 7005-2

Coating: Fusion Bonded Epoxy Coating

Inspection and Test: EN 1074-1 and 2, EN 12266

Festures of Flow Balancing Valve

• Good sealing, no penetration, easy to adjust the rotation;
• Small mounting space, accurate and clear opening indication;
• The use of inclined valve core and stem is more fluid flow in the valve
• The surface is smooth and clean, and the appearance is delicate and beautiful.
• Once-through Structure, Small Fluid Resistance
• Numeral Handwheel, Accurately Debug Balance
• Easy Connecting with Intelligent Instrument
• Self-balancing Design
• Hold Complete Cut Off Function

Flow Balancing Valve Working Principle

 

The valve regulates the flow rate of medium through its valve body, balancing the valve stem up and down by turning the regulating valve handle, adjusting the flow path and changing the flow curve characteristics. Pressure gauges equipped on the balance valve body are used to measure pressure differential, which can be used to detect and adjust the flow rate.

Flow Balancing Valve Installation and Commissioning

This valve can be installed either on the water supply pipe or on the water return pipe. Generally, it is recommended to be installed on the water return pipe, especially on the high-temperature loop. For specific use, please consult ZECO Valve Group.

Flow Balancing Valve Material and Standard

Size Range: 3/4″~2″

Pressure Rating: 10bar ~ 16bar

Face to Face Dimensions: EN 558-1, ASME B 16.10

Flange End Dimension: BS 21

Inspection and Test: ISO 5208 / EN 12226-2

Festures of Balancing Valve

• Straight flow structure, low fluid resistance;
• Handwheel display the number of opening cycles for easy debugging;
• Valve inlet and outlet have self – sealing test port;
• Valve disc self-balancing design, open and close is not affected by pipeline pressure, can be closed completely.

Balancing Valve Working Principle

By changing the clearance between the valve core and valve seat (opening), adjust Kv valve flow capacity (valve) to change the flow resistance of flow through the valve in order to achieve the purpose of flow adjustment, the role of the object is the resistance of the system, eliminate the resistance unbalance phenomenon in the system, thus to new water allocation proportion according to the design and calculation of balance, each branch in proportion to increase or decrease at the same time.

Balancing Valve Installation and Commissioning

There are two methods of selection. The first is to use the software for calculating positive moisture content. The design flow Q and the design pressure difference ∆P are input to obtain the size and balance pre-set position of the balance valve. In order to obtain better accuracy, it is recommended that the positioning of the balance valve be at 50-90% of the opening degree; Secondly, when the design flow Q is known and the design pressure difference ∆P is known, the Kv value can be calculated by the formula, and then the proper balance valve size and predetermined parameters can be selected from the Kv value table. For specific use, please consult ZECO Valve Group.

Balancing Valve Material and Standard

Size Range: 2″~16″
Pressure Rating: 10bar ~ 25bar
Face to Face Dimensions: AMSE B16.10, EN558-1
Flange End Dimension: AMSE B16.1/16.42, AS4087, EN1092-2
Coating: Fusion Bonded Epoxy Coating
Inspection and Test: ISO 5208 / EN 12226-2