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 Metal Seated Gate Valve

• The stem is permanently sealed by three independent seals, and if the seal wears out after long use, the gland bolts only need to be tightened;
• Stem spherical stop-thrust, low friction resistance, so that the valve is light to open and close, low operating torque;
• Major stem O-ring can be replaced with pressure in the pipe;
• Epoxy resin sprayed on the inner and outer surface of the product, not easy to corrode.

Metal Seated Gate Valve Working Principle

Metal Seated gate valve vs resilient seated gate valve, Usually both can be used on the water pipeline, reilient seated gate valve more for clean water pipeline, because the granular medium will cause damage to the rubber of the gate, while the metal seated gate valve is more widely used, the hardness of the bronze seat makes in the granular medium can also be very good to achieve the sealing effect and service life will not be greatly affected. But the metal seated gate valve production cycle is longer, the use of higher costs, so the choice between the two or according to the working conditions of the media conditions and budget to choose.

Metal Seated Gate Valve Installation and Commissioning

Metal seated gate valve in the pipeline does not require frequent maintenance, depending on the time of use, the stem O-ring can be replaced periodically to reduce the possibility of leakage. For specific use, please consult Zeco Valve Group.

Metal Seated Gate Valve Material and Standard

Size Range: 2″~64″
Pressure Rating: 10bar ~ 25bar

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

Flange End Dimension: AMSE B16.5, AS4087, EN1092-2

Coating: WRAS approved Fusion Bonded Epoxy Coating

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

Features of Knife Gate Valve

• Full bore design for high media throughput capacity;
• U-shaped gasket with good sealing effect;
• Gate plate with gate function, good shut-off effect, can effectively shut off all kinds of debris in the media, to solve the leakage phenomenon after shut-off containing lumps, particles, and fiber media;
• Able to work in dirty media, easy to install, easy to disassemble, easy to maintain, without removing the valve can replace the valve seals, making valve maintenance more simple.

Knife Gate Valve Working Principle

The wiper between the valve body and bonnet of the knife gate valve prevents solid particles from entering the bonnet. The valve body cavity, seat configuration, and slant gate design provide features to impede the entry of thick media (e.g. pulp, slurry) or solid media (e.g. granules and powders).

Knife gate valve gate and seat are always in close contact with the sealed valve, and the gate with a guide hole with the same conduit gate valve, the gate has a diameter size of a round hole, through the gate opening and closing so that the round hole on the gate and the through diameter to do a complete disengagement and coincide with the action. In addition, the advantage of the structure is that the valve body diameter without grooves, the medium will not be blocked, and has full diameter flow characteristics, suitable for the use of powder and particle media in the pipeline. Its sealing structure can be divided into a soft seal, and a hard seal structure. The sealed valve seat is designed with a movable structure, with anti-wear and automatic compensation function, thus longer life. In the process of closing and opening the valve seat and the gate plate have to be close to the movement, so that the valve opening and closing force is stable.

Knife Gate Valve Installation and Commissioning

Knife gate valve can be divided into pneumatic knife gate valve, electric knife gate valve, manual knife gate valve. According to the operation mode, Installation and operation according to the different operating instructions. For specific use, please consult Zeco Valve Group.

Knife Gate Valve Material and Standard

Size Range: 2″~48″
Pressure Rating: 10bar ~ 20bar

Face to Face Dimensions: MSS SP-81-2006

Flange End Dimension: EN1092, ASME B16.5, ASME B16.47, AS2129

Inspection and Test: MSS SP-81-2006