Onn Self Production Wj41h Manual Drive Bellows Globe Valve for Fertilization 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 core component of the bellows sealed globe valve is the robust metal bellows. Its lower end is meticulously welded to the valve stem assembly, while the upper end is seamlessly welded to the connecting plate, creating an impenetrable metal barrier between the fluid medium and the atmosphere. This engineering marvel ensures that the valve stem achieves absolute zero leakage.
2. Our valve disc incorporates a sophisticated conical design and a streamlined sealing surface that aligns perfectly with the medium flow. This results in superior sealing performance and a significantly extended service life, making it an invaluable asset in your operations.
3. Featuring an innovative dual sealing design (bellows + packing), our valve guarantees optimal leakage prevention. In the rare event of bellows failure, the valve stem packing stands as a resilient backup, adhering strictly to international sealing standards.
4. Unlike traditional methods, our valve cover is equipped with a grease fitting that directly lubricates the valve stem, nut, and shaft sleeve, ensuring smoother operation and reducing maintenance efforts substantially.
5. Designed with user comfort in mind, the ergonomic handwheel offers a longer service life. Its easy and convenient operation combined with enhanced safety and reliability ensures that your tasks are performed with utmost efficiency and minimal effort.

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

We pride ourselves on our comprehensive after-sales service. Onn Valve Co., Ltd. offers routine valve maintenance and troubleshooting training. We provide remote or on-site valve review, installation, and operation technical guidance. Your technical inquiries will be answered within 24 hours. Enjoy an 18-month warranty period (as per national standards), 24-hour technical support hotline, various complimentary after-sales services during the warranty, lifetime after-sales service, and a limited supply of free wearing parts for 18 months.

FAQ

Q1: What is a safety valve?
1. Safety valves are crucial for protecting life, property, and the environment. They are meticulously designed to open and release overpressure in a container or device, and to re-close and prevent further fluid release once normal conditions are restored.
2. As essential safety devices, safety valves often serve as the final line of defense. Ensuring their reliability and functionality under all circumstances is paramount. Remember, safety valves are neither process valves nor pressure regulators and should solely be used for overpressure protection.

Q2: How does a safety valve work?
The working principle of a safety valve can be summarized as follows:
1. Open: When system pressure surpasses the safety valve's set pressure, the valve disc is pushed open by the medium pressure and spring force, releasing the excess pressure.
2. Stay Open: As the system pressure stabilizes within the set range, the spring stabilizes the system under stress, keeping the safety valve open to maintain balance.
3. Close: Once the system pressure falls below the safety valve's set threshold, the spring loses its locking ability, causing the valve disc to close under the medium pressure, and halting any further increase in medium pressure.