Marine Cast Copper Gate Valve

Product Details
Customization: Available
Media: Oil
Temperature: High Temperature
Manufacturer/Factory, Trading Company

360° Virtual Tour

Diamond Member Since 2013

Suppliers with verified business licenses

Audited Supplier

Audited by an independent third-party inspection agency

Type of Ownership
Limited Company
Management System Certification
ISO 9000, QC 080000
  • Marine Cast Copper Gate Valve
  • Marine Cast Copper Gate Valve
Find Similar Products

Basic Info.

Model NO.
DY11259
Connection Form
Flange
Structure
Elevated
Pressure
High Temperature
Function
Ddcv Double Lobe
Sealing Form
Gland Packings Globe Valve
Flow Direction
Bidirectional
Standard
GB
Application
Water Industrial Usage
Transport Package
Wooden Case
Specification
GB/T, CB/T
Trademark
DEYUAN MARINE
Origin
China
Production Capacity
1000PCS Per Month

Product Description

Marine Cast Copper Gate Valve
Marine Cast Copper Gate Valve
Marine Cast Copper Gate Valve

A gate valve, also known as a sluice valve, is a valve that opens by lifting a barrier (gate) out of the path of the fluid. Gate valves require very little space along the pipe axis and hardly restrict the flow of fluid when the gate is fully opened. The gate faces can be parallel but are most commonly wedge-shaped (in order to be able to apply pressure on the sealing surface).

Typical use of Gate Valve :

Gate valves are used to shut off the flow of liquids rather than for flow regulation. When fully open, the typical gate valve has no obstruction in the flow path, resulting in very low flow resistance.The size of the open flow path generally varies in a nonlinear manner as the gate is moved. This means that the flow rate does not change evenly with stem travel. Depending on the construction, a partially open gate can vibrate from the fluid flow.

Gate valves are mostly used with larger pipe diameters (from 2" to the largest pipelines) since they are less complex to construct than other types of valves in large sizes.

At high pressures, friction can become a problem. As the gate is pushed against its guiding rail by the pressure of the medium, it becomes harder to operate the valve. Large gate valves are sometimes fitted with a bypass controlled by a smaller valve to be able to reduce the pressure before operating the gate valve itself.

Gate valves without an extra sealing ring on the gate or the seat are used in applications where minor leaking of the valve is not an issue, such as heating circuits or sewer pipes.

Valve construction:

Common gate valves are actuated by a threaded stem that connects the actuator (e.g. handwheel or motor) to the gate. They are characterised as having either a rising or a nonrising stem, depending on which end of the stem is threaded. Rising stems are fixed to the gate and rise and lower together as the valve is operated, providing a visual indication of valve position. The actuator is attached to a nut that is rotated around the threaded stem to move it. Nonrising stem valves are fixed to, and rotate with, the actuator, and are threaded into the gate. They may have a pointer threaded onto the stem to indicate valve position, since the gate's motion is concealed inside the valve. Nonrising stems are used where vertical space is limited.

Gate valves may have flanged ends drilled according to pipeline-compatible flange dimensional standards.

Gate valves are typically constructed from cast iron, cast carbon steel, ductile iron, gunmetal, stainless steel, alloy steels, and forged steels.

All-metal gate valves are used in ultra-high vacuum chambers to isolate regions of the chamber.

Bonnet of gate valve 

Bonnets provide leakproof closure for the valve body. Gate valves may have a screw-in, union, or bolted bonnet. A screw-in bonnet is the simplest, offering a durable, pressure-tight seal. A union bonnet is suitable for applications requiring frequent inspection and cleaning. It also gives the body added strength. A bolted bonnet is used for larger valves and higher pressure applications.

Pressure seal bonnet of gate valve

Another type of bonnet construction in a gate valve is pressure seal bonnet. This construction is adopted for valves for high pressure service, typically in excess of 2250 psi (15 MPa). The unique feature of the pressure seal bonnet is that the bonnet ends in a downward-facing cup that fits inside the body of the valve. As the internal pressure in the valve increases, the sides of the cup are forced outward. improving the body-bonnet seal. Other constructions where the seal is provided by external clamping pressure tend to create leaks in the body-bonnet joint.

If you are interested in our products or have any questions, please feel free to contact us for more details.
Deyuan Marine has been waiting for your contact.

 


Marine Cast Copper Gate Valve
Technical Parameters of China Marine Cast Iron Gate Valves
Marine Cast Copper Gate Valve

Marine Cast Copper Gate Valve


Marine Cast Copper Gate Valve
Marine Cast Copper Gate Valve
Marine Cast Copper Gate Valve

Marine Cast Copper Gate Valve



Marine Cast Copper Gate Valve

 

Send your message to this supplier

*From:
*To:
*Message:

Enter between 20 to 4,000 characters.

This is not what you are looking for? Post a Sourcing Request Now
Contact Supplier
Product Groups
More