Manual Bellows Globe Valve Wj41h Onn Series for Petroleum and Pharmaceutical Applications

• Media: Oil
• Standard: En 12516
• Certification: CCC, ISO, CE
• Temperature: High Temperature
• Connection: Flange
• Pressure: Adjustable
• Model NO.: WJ41H forged steel corrugated pipe globe valve
• 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. The essential component of the bellows sealed globe valve is the robust metal bellows. The lower end is expertly welded to the valve stem assembly, while the upper end is securely welded to the connecting plate. This ingenious design creates an impenetrable metal barrier between the fluid medium and the atmosphere, guaranteeing absolute zero leakage of the valve stem.
2. Featuring a conical design, the valve disc integrates seamlessly with the medium, providing superior sealing performance and an extended service life. This streamlined sealing surface ensures enhanced durability and reliability.
3. Dual sealing design (bellows + packing): In the unlikely event that the bellows fails, the valve stem packing takes over to prevent leakage, adhering to rigorous international sealing standards.
4. The valve cover is equipped with a grease fitting, allowing direct lubrication of the valve stem, nut, and shaft sleeve. This innovative approach surpasses traditional methods that only lubricate the threads, ensuring smoother operation and longevity.
5. The ergonomic handwheel design promises a longer service life, making operation easy and convenient, while also being safer and 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 valve routine maintenance and training services for troubleshooting common faults. We provide remote or on-site valve inspections, installation, and operational technical guidance. User inquiries on technical quality are addressed within 24 hours. We offer an 18-month product warranty (aligned with national standards), a 24-hour technical support hotline, and various forms of free after-sales service during the warranty period. Lifetime after-sales service and a limited supply of free wearing parts for 18 months are also included.

FAQ

Q1: What is a safety valve?
1. The primary function of safety valves is to protect lives, property, and the environment. Safety valves are engineered to open and release overpressure within a container or device and reclose to prevent further fluid release once the pressure normalizes.
2. Serving as a crucial safety device, often the final line of defense, a safety valve must be reliable under all conditions. It is not to be misused as a process valve or pressure regulator. Its sole function is overpressure protection.

Q2: How does a safety valve work?
The functioning principles of a safety valve are as follows:
1. Opening: When system pressure surpasses the set pressure of the safety valve, the valve disc opens due to medium pressure and spring force, releasing excess pressure.
2. Maintaining Open: Once system pressure stabilizes within the set threshold, the spring maintains its position, keeping the system under control and the safety valve open.
3. Closing: When system pressure falls below the set pressure, the spring is unable to lock and seal. Consequently, the valve disc closes under medium pressure, stopping further increase in pressure.