Bolted bonnet gate valve refers to a gate valve whose valve body and bonnet are connected by bolts. The gate valve is a linear up and down motion valve that controls the flow of fluid by raising or lowering the wedge-shaped gate.
German standard for gate valve performance, component material, generally we mainly refer to its structural length regulations.
2. Bolted Bonnet
Indicates that the bonnet is bolted to the valve body.
3. Rising Stem
Indicates that the valve stem rises and falls when operated, opening and closing the fluid passage, providing an indication of the valve position (open or closed).
4. Body Bonnet Material
GGG50 Ductile Iron
Advantages of Gate Valve
1
Small fluid resistance;
2
Small torque required for opening and closing;
3
It can be used on the ring pipeline where the medium flows in two directions, that is to say, the flow direction of the medium is not restricted;
4
When fully opened, the sealing surface is eroded by the working medium and is smaller than the globe valve;
5
The shape is relatively simple, and the manufacturing process is good;
6
The structure length is relatively small. Usually, the pipeline with a nominal size larger than DN50 is used as the device to cut off the medium.
Applications & Quality Commitment
It is used as a cutoff and adjusting equipment for the various water supply and drainage pepeline in building, chemial, medicine, textile, ship and other industries.
Zhongfa valve can offer OEM & ODM gate valves and parts in China. Zhongfa valve's philosophy is to seek for high quality products with optimal service with the most ecmonical price. All valve product are test two times before shipping to ensure the quality of the product. Welcome to visit our factories. We will show the Craftsmanship of the valves.
Technical Specifications
Size & Pressure Rating & Standard
Size
DN40-DN1200
Pressure Rating
PN10, PN16, CL150
Face to Face STD
BS5163, DIN3202 F4, API609
Connection STD
BS 4504 PN6/PN10/PN16, DIN2501 PN6/PN10/PN16, ISO 7005 PN6/PN10/PN16, JIS 5K/10K/16K, ASME B16.1 125LB, ASME B16.1 150LB, AS 2129 Table D and E
Upper Flange STD
ISO 5211
Material
Body
Cast Iron(GG25), Ductile Iron(GGG40/50)
Disc
Cast Iron(GG25), Ductile Iron(GGG40/50)
Stem/Shaft
Stainless Steel 304(SS304/316/410/420)
Seat
CF8/CF8M+EPDM
Bushing
PTFE, Bronze
O Ring
NBR, EPDM, FKM
Actuator
Gear Box, Electric Actuator, Pneumatic Actuator
Product Gallery
Frequently Asked Questions (FAQ)
Q1What does the DIN3202 F4 standard specify for gate valves?
The DIN3202 F4 standard is a German standard that defines the face-to-face structural length regulations, overall performance requirements, and component material standards for flanged gate valves.
Q2What are the key benefits of using a rising stem gate valve?
In a rising stem configuration, the valve stem lifts and lowers during operation. This mechanism provides visual indication of the valve's current position (open or closed) and makes maintenance easier since the stem threads are exterior to the media.
Q3Which industries and applications are suitable for these gate valves?
They are suitable for water supply and drainage pipelines, building systems, chemical plants, pharmaceutical processes, textile manufacturing, marine ship applications, and other industrial pipelines larger than DN50 requiring bidirectional cutoff capabilities.
Q4What actuator options are compatible with these valves?
With an ISO 5211 upper flange standard, the valves can be operated manually with a handwheel or gear box, or automated via pneumatic and electric actuators based on operational demands.
Q5How is the product quality guaranteed prior to shipment?
Every valve undergoes two rounds of rigorous pressure and functional testing before dispatch to ensure dependable sealing performance, mechanical durability, and adherence to international manufacturing standards.
Q6Are OEM and ODM customization options available?
Yes, Zhongfa valve offers full OEM and ODM customization for valve bodies, trim materials, drilling standards (BS, DIN, ISO, JIS, ASME), and branding requirements.
