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China Brass CF8 Metal Seal Gate Valve Exporter, Exporters
Product Description
The stem nut of the non-rising stem metal seal gate valve is in direct contact with the medium in the valve body. When opening and closing the valve, it is realized by rotating the valve stem. The advantage is that the height of the valve does not change when the valve is opened and closed, so the installation space is relatively small, and it is suitable for large-diameter valves and pipelines with limited installation space, such as underground pipelines, but the valve must be equipped with an opening and closing indicator to show valve opening. The disadvantage is that the valve stem thread is in direct contact with the medium, which is easily corroded by the medium, and at the same time cannot be lubricated, so it is easily damaged.
Operation Parameters
The working temperature of the Metal Seated Gate Valve is from -20 to 120℃ according to the materials. No restrication torwards the fluid’s direction and no turbulence to the flow, it will also not reduce the pressure.
Coating & Material
Epoxy painted inside is anti-corrosion as well as avoiding the secondday pollution to the fluid. The wedge is coated with EPDM, the EPDM proportion can reach 50%，steable and good resilient.
Quality Assurance
Each product will be carried out appearance, material, air tightness, pressure and shell testing before leaving the factory ; unqualified products are resolutely not allowed to leave the factory. All valve product are test two times before shipping to ensure the quality of the product.
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. 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) |
| Seal | Brass, CF8 |
| Bushing | PTFE, Bronze |
| O Ring | NBR, EPDM, FKM |
| Actuator | Gear Box, Electric Actuator, Pneumatic Actuator |
Product Gallery
Frequently Asked Questions
What is the advantage of using a non-rising stem metal seal gate valve?
The main advantage is that the height of the valve remains constant during opening and closing operations. This makes it ideal for installations with limited vertical clearance, large-diameter setups, and underground pipeline applications.
What temperature range can this gate valve handle?
Depending on the specific materials selected, the working temperature of the metal seated gate valve operates effectively between -20℃ and 120℃ without affecting flow efficiency.
How is fluid contamination and internal corrosion prevented?
The valve interior is coated with anti-corrosive epoxy paint to eliminate secondary fluid contamination. Additionally, the wedge features a resilient EPDM coating with up to 50% proportion for reliable durability.
What quality inspections are conducted before shipping?
Every product undergoes comprehensive inspection including appearance, material composition, air tightness, pressure integrity, and shell testing. Valves are tested twice before shipping to guarantee compliance.
Which actuation options are available for these gate valves?
We supply valves configured with manual gearboxes, electric actuators, and pneumatic actuators conforming to the ISO 5211 upper flange mounting standard.
Does Zhongfa Valve support customized manufacturing?
Yes, Zhongfa Valve provides professional OEM and ODM gate valve manufacturing and spare parts production tailored to standard pipeline requirements globally.
