2016 New Wholesale Special Nut with Good Quality

• Model NO.: YDR-SN415
• Type: Special Nut
• Head Style: Special
• Grade: 4.8
• Materials: Stainless Steel Ss304, Ss316 and Ss316L
• Packing Detail: Small Box and Carton
• Delivery Time: 35-45days
• Money: Fob Prices
• Quality: Good
• Transport Package: Box/Carton/Pallet, Carton/Pallet or Customised
• Origin: China

• Material: Carbon Steel
• Connection: Hinged Bolts
• Standard: DIN, ANSI, GB
• Finish: Zinc Plate
• Size: M2.9, M3.5, M4.2, M4.8, M5.5
• Port: Shanghai or Ningbo Port
• MOQ: 100,000
• The Material: The Steel
• Trademark: NBYD
• Specification: M5-M42
• HS Code: 73181600

ABOUT OUR COMPANY:

2-year Manufacturer of Fasteners
Since its establishment in 2002, Ningbo Yunding has been supplying quality fasteners and fixing systems to customers in the US, Europe, Japan and Australia. We offer fasteners in all shapes and sizes, and in many materials including steel, stainless steel and nylon. When you source from us, you're sure to find a product that meets your needs.

Providing Order-specific Reports
To assure you of market-leading product quality, we make each approved item using the finest materials from Europe, and the latest machines from Switzerland and Italy. Plus, we carry out strict in-house QC measures at multiple stages in our ISO 9001:2000-certified facilities, storing all results in our central databank. So we can provide you with detailed order-specific reports on tensile strength, torque and zinc plating thickness.

Over 500 Tons Monthly
As one of the largest fastener manufacturers in China, we can produce over 500 tons monthly. We gladly ship free samples of our products within seven days and can fulfill orders in one to two months. If you have OEM/ODM orders to complete, contact us today.

About our this details of the products:

Item Name:Hex Nut  
                                                                               
ABOUT OUR CURRENT EXPORT MARKET:

Asia
Australasia
Central/South America
Eastern Europe
Mid East/Africa
North America
Western Europe

ABOUT OUR SELLING PORT:
 
Brand-name Parts
Country of Origin
Distributorships Offered
Electronic Link
Experienced Staff
Form A
Guarantee/Warranty
International Approvals
Military Specifications
Packaging
Price
Product Features
Product Performance
Prompt Delivery
Quality Approvals
Reputation
Service
Small Orders Accepted
 
Wish our porducts will be helpful for your business.

Any questions,i'm here waiting for you.

Best Regards,

linda

Ningbo Yunding International Enterprise Ltd.
Add:B122 Duoyuan Career Creating Mansion,
NO.188 South Donghanmen Road.
Yuyao City,Zhejiang,China.

Tel:+86-574-58225235

Fax:+86-574-58221411

Mobile:15267834553.

Welcome to our company!



 

Gate Valve, also known as a sluice valve, is a valve that opens by lifting a round or rectangular gate/wedge out of the path of the fluid. The distinct feature of a gate valve is the sealing surfaces between the gate and seats are planar, so gate valves are often used when a straight-line flow of fluid and minimum restriction is desired. The gate faces can form a wedge shape or they can be parallel. Gate valves are primarily used to permit or prevent the flow of liquids, but typical gate valves shouldn't be used for regulating flow, unless they are specifically designed for that purpose. Because of their ability to cut through liquids, gate valves are often used in the petroleum industry. For extremely thick fluids, a specialty valve often known as a knife valve is used to cut through the liquid.[1] On opening the gate valve, the flow path is enlarged in a highly nonlinear manner with respect to percent of opening. This means that flow rate does not change evenly with stem travel. Also, a partially open gate disk tends to vibrate from the fluid flow. Most of the flow change occurs near shutoff with a relatively high fluid velocity causing disk and seat wear and eventual leakage if used to regulate flow. Typical gate valves are designed to be fully opened or closed.[2] When fully open, the typical gate valve has no obstruction in the flow path, resulting in very low friction loss.[3]

Gate valves are characterised as having either a rising or a non rising stem. Rising stems provide a visual indication of valve position because the stem is attached to the gate such that the gate and stem rise and lower together as the valve is operated. Non rising stem valves may have a pointer threaded onto the upper end of the stem to indicate valve position, since the gate travels up or down the stem on the threads without raising or lowering the stem. Non rising stems are used underground or where vertical space is limited.

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

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 about the pressure seal bonnet is that the body - bonnet joints seals improves as the internal pressure in the valve increases, compared to other constructions where the increase in internal pressure tends to create leaks in the body-bonnet joint.

Gate valves may have flanged ends which are drilled according to pipeline compatible flange dimensional standards. Gate valves are typically constructed from cast iron, ductile iron, cast carbon steel, gun metal, stainless steel, alloy steels, and forged steels.

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

Gate Valve

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