Onn Self Production Wj41h Manual Drive Bellows Globe Valve for Fertilization Industry

• Customization: Available
• Media: Oil
• Standard: En 12516
• Model NO.: WJ41H forged steel corrugated pipe globe valve
• Certification: CCC, ISO, CE
• Temperature: High Temperature
• Connection: Flange
• Pressure: Adjustable
• Closed: Open
• Structure: Metal Corrugated Pipe
• Material: Forged Steel
• Suitable Temperature: -196ºC-600ºC
• Application: Petroleum, Chemical, Pharmaceutical, Fertilization
• Product Structure: Manual Drive, Flange Connection
• Color: Customizable
• Mafnufacture License: Tsf733049-2027
• Transport Package: Plywood Case
• Specification: DN15-DN400
• Trademark: ONN
• Origin: Wenzhou, Zhejiang, China
• HS Code: 8481400000
• Production Capacity: 48000PCS/Year

Product Description

Product Description

1. At the heart of our Wj41h Manual Drive Bellows Globe Valve is a robust metal bellows. The lower end is seamlessly welded to the valve stem assembly, while the upper end is meticulously welded to the connecting plate. This creates an impenetrable metal barrier between the fluid medium and the atmosphere, ensuring zero leakage from the valve stem.
2. The valve disc features an innovative conical design, and its sealing surface is optimally aligned with the medium flow. This ingenious design results in superior sealing performance and significantly extends the valve's service life.
3. Our dual-sealing design (bellows + packing) ensures maximum reliability. In the unlikely event of bellows failure, the valve stem packing will still prevent leakage, adhering to the highest international sealing standards.
4. The valve cover is equipped with a grease fitting, providing direct lubrication to the valve stem, nut, and shaft sleeve. This advanced method surpasses traditional techniques that only lubricate the threads, ensuring smoother operation.
5. An ergonomically designed handwheel promises a longer service life, coupled with ease and convenience of operation. This ensures the valve is not only safer but also more reliable.

Product Parameters

Number	Name	Material Quality	Number	Name	Material Quality
1	Valve body	GS-C25,CF8,CF8M	9	Hex Nut	ASTM A194-2H,A194-8
2	Valve flap	13Cr,SS304,SS316,Stellite	10	Double headed bolt	ASTM A193-B7,A194-B8
3	Pin	13Cr,F304+Stellite	11	Filler	Flexible graphite, PTFE
4	Bellows assembly	SS304,SS316	12	Gland	1025,SS304,SS316
5	Valve stem	SS304,SS316	13	Positioning piece	1025,SS304
6	Shim	20Cr13,F304,F316	14	Valve Nut	Copper alloy, D2, BL-2
7	Bonnet	Flexible graphite+stainless steel, PTFE	15	Handwheel	Carbon steel

Detailed Photos

After Sales Service

Our company offers comprehensive after-sales services, including routine valve maintenance and troubleshooting training. We provide remote or on-site valve reviews, installation, and operational technical guidance. Technical quality consultations are addressed within 24 hours. We offer an 18-month product warranty, following national standards, and 24-hour technical support. Enjoy our various forms of free after-sales service during the warranty period and lifetime after-sales support, with limited free supply of wearing parts for 18 months.

FAQ

Q1: What is a safety valve?
1. Safety valves are essential for protecting life, property, and the environment. They are designed to open and release overpressure within a container or device, then re-close to prevent further fluid release once normal conditions are restored.
2. Safety valves act as the ultimate defense mechanism. It is crucial that they operate reliably at all times and under all conditions. These devices are not meant to be used as process valves or pressure regulators and should solely be utilized for overpressure protection.

Q2: How does a Safety Valve work?
The operating principle of safety valves is as follows:
1. Open: When system pressure exceeds the set pressure, the valve disc opens due to medium pressure and spring force, releasing excess pressure.
2. Keep open: Once the system pressure stabilizes within the set range, the spring balances out, maintaining system stress and keeping the valve open.
3. Close: When system pressure drops below the set level, the spring fails to lock and seal, causing the valve disc to close under medium pressure, preventing any further pressure increase.