Onn Series Wj41h Bb-Bg-OS& Y Manual Drive Steel Bellows Globe Valve Direct Sales

• 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 heart of the Onn Series Wj41h BB-BG-OS&Y Manual Drive Steel Bellows Globe Valve is its robust metal bellows. This critical component, welded seamlessly to the valve stem assembly at the lower end and to the connecting plate at the upper end, creates an impenetrable metal barrier. This ensures absolute zero leakage from the valve stem, offering unparalleled reliability.
2. The valve disc features an innovative conical design, with a meticulously streamlined sealing surface that aligns flawlessly with the medium flow. This results in superior sealing performance and extends the valve's service life significantly.
3. Equipped with a dual sealing design (bellows + packing), this valve guarantees prevention of leakage even if the bellows fail. It meets and exceeds international sealing standards, providing peace of mind with every use.
4. The valve cover includes a grease fitting, enabling direct lubrication of the valve stem, nut, and shaft sleeve. This advanced design surpasses traditional methods that only lubricate threads, ensuring smoother operation and longer durability.
5. Designed for comfort and efficiency, the ergonomic handwheel offers a longer service life and effortless operation. Its user-friendly design ensures safer, more reliable use, making it a preferred choice for operators.

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

Onn Valve Co., Ltd. is committed to comprehensive after-sales support. We offer routine valve maintenance and troubleshooting training, remote or on-site technical guidance for installation and operation, and prompt responses to technical quality queries within 24 hours. Our products come with an 18-month warranty, following national standards, and we provide continuous 24-hour technical support. Enjoy various free after-sales services during the warranty period and lifetime support with limited free spare parts for 18 months.

FAQ

Q1: What is a safety valve?
1. Safety valves are essential for protecting lives, property, and the environment. Designed to open under overpressure conditions, they release excess pressure from a container or device and re-close to prevent further fluid release once normal conditions are restored.
2. Serving as a critical safety device, a safety valve is often the final line of defense. It must be fully operational at all times, under any circumstances. Safety valves are not meant to be used as process valves or pressure regulators and should only be utilized 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 exceeds the set threshold, the valve disc opens due to medium pressure and spring force, effectively releasing excess pressure.
2. Keep open: Once system pressure stabilizes within the set threshold, the spring maintains stabilization, keeping the safety valve open and the system under controlled stress.
3. Close: When system pressure falls below the set threshold, the spring is unable to lock and seal the valve disc. Consequently, the valve disc closes, halting any further increase in medium pressure.