Soft seal gate valve adopts no cavity structure, body valve cover inner and outer surface spraying epoxy resin, gate surface rubber, stem seal abandon packing and use "O" seal ring, making the seal more reliable.
Soft seal gate valve main structural characteristics:
- Integral valve cover, dark rod design, compact structure
- Stem nut and gate two body structure, no stuck phenomenon
- Straight way, no retention cavity
- Stem seal with "O" seal ring
- Excellent anti-corrosion properties
- Inside the shell, the exterior is sprayed with epoxy resin
- The connection bolts shall be hexagon bolts, sealed with glue at the top
- The ram is completely covered with rubber conforming to health inspection
- Stem, stem nut and other parts are made of stainless steel, bronze and other materials which are not corroded by water
Soft seal gate valve performance specification parameters:
- Nominal pressure: PN1.0 ~ 1.6MPa
- Nominal diameter: DN40 ~ 300mm
- Body material: cast iron/ductile iron/cast steel
- Connection mode: flange, clamp
- Driving mode: manual, electric
- Operating temperature range: ≤80℃
- Applicable media: water, sewage, etc
Working principle and use of the product:
Bevel gear driven wedge gate valve with low fluid resistance, suitable for a wide range of pressure, temperature and other characteristics, is one of the most commonly used truncation valve, used to truncate or connect the medium in the pipeline. Through the selection of different materials, can be applied to water, steam, oil, nitric acid, acetic acid, strong oxidizing medium and urea and other media.
Product structure features:
1, the fluid resistance is small, sealing surface by media brush and erosion is small.
2, open and close less effort.
3, the medium flow is not restricted, no turbulence, no pressure reduction.
4, the shape is simple, the structure is short, the manufacturing process is good, the application range is wide.
Forged steel gate valve adopts body and bonnet threaded connection, internal pressure self-sealing ring seal.
Main structural characteristics of forged steel gate valve:
- Full diameter forged steel gate valve or reduced diameter forged steel gate valve
- Self-centering platen type
- Threaded internal pressure self - tightening bonnet
- Integral upper sealing seat
- Valve seat and disc sealing surface are made of cobalt-based hard alloy plasma spray welding, with good wear resistance and abrasion resistance
- The stem is treated with anti-corrosive nitriding and has good resistance to corrosion and abrasion
Forged steel gate valve performance specification parameters:
- Nominal pressure: Class150 ~ 2500Lb
Nominal diameter: 1/2" ~ 2"
- Body material: Forged steel (A105/F11)/ Forged stainless steel (F304/F316)
- Connection mode: welding, socket welding
- Operating temperature range: -29℃ to 500℃
Applicable media: water, steam, oil, nitric acid, acetic acid, oxidation, urea and other media
The opening and closing part of the American standard gate valve is the gate plate. The direction of the motion of the gate plate is perpendicular to the direction of the fluid. The gate valve can only be fully opened and fully closed, and can not be adjusted and throttled.
American standard gate valve main structure characteristics:
- Flow resistance is small, the medium channel inside the valve body is straight, the medium flows in a straight line, the flow resistance is small
- Less effort when opening and closing (compared with the globe valve)
- High height, long opening and closing time
- The opening and closing stroke of ram is large, and the fall is carried out by screw
- Water hammer is not easy to produce
American standard gate valve performance specification parameters:
- Nominal pressure: Class150 ~ 2500Lb
Nominal diameter: 1/2" ~ 12"
- the valve body material: cast steel/carbon steel/stainless steel (WCB/CF8 CF8M / 304/316/316 l)
- Connection mode: flange, welding
- Driving mode: manual, electric, pneumatic
- Operating temperature range: ≤425℃
- Applicable media: water, oil, nitric acid, acetic acid, nitric acid, etc
The opening and closing part of the gate valve is the gate plate. The direction of the motion of the gate plate is perpendicular to the direction of the fluid. The gate valve can only be fully opened and fully closed, and can not be adjusted and throttled.
Main structural characteristics of Non-rising stem wedge gate valve:
- Flow resistance is small, the medium channel inside the valve body is straight, the medium flows in a straight line, the flow resistance is small
- Less effort when opening and closing (compared with the globe valve)
- High height, long opening and closing time
- The opening and closing stroke of ram is large, and the fall is carried out by screw
- Water hammer is not easy to produce
Non-rising stem wedge gate valve performance specification parameters:
- Nominal pressure: PN1.0 ~ 1.6MPa
- Nominal diameter: DN40 ~ 2200mm
- Body material: cast iron/ductile iron/cast steel
- Connection mode: flange
- Drive mode: manual, worm gear, electric
- Operating temperature range: ≤120℃
- Applicable media: water, oil, plumbing and other non-corrosive fluids
Flat gate valve is suitable for natural gas, petroleum, chemical, environmental protection, city pipeline, gas pipeline and other transmission lines, vent system and steam storage device, used as opening and closing equipment. Long haul pipeline suitable for natural gas extraction and purification.
Product structure features:
1, the valve seat is sealed by O-ring and the floating valve seat structure with preloading force, so that the inlet and outlet of the plate gate valve are sealed bidirectional; And the opening and closing torque of the structure is only 1/2 of the ordinary valve, which can easily open and close the valve. This kind of valve should be installed horizontally in the pipeline.
2. When fully opened, the channel is smooth and straight, the flow resistance coefficient is minimal, there is no pressure loss, and the pipeline can be cleaned with hairball
3, the packing structure with self-sealing ability, without frequent adjustment, opening and closing is very light, and reliable sealing, stuffing box is provided with an auxiliary sealing grease injection structure, sealing performance is absolutely reliable, really achieve zero leakage; To solve the general valve packing is the most easy to leak out
4. When the plate gate valve is closed, the high pressure in the chamber can be automatically removed to ensure the safety of use
5, fully closed structure, good protection performance, can adapt to all-weather requirements
