Onn Series Wj41h Forged Steel Manual Bellows Globe Valve for Pharmaceutical Industry

• 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 pivotal component of the bellows sealed globe valve is the robust metal bellows. Precision-welded at the lower end to the valve stem assembly and at the upper end to the connecting plate, it creates a seamless metal barrier between the fluid medium and the atmosphere, ensuring absolute zero leakage of the valve stem.
2. Engineered with a conical valve disc design, this valve offers a streamlined sealing surface that aligns perfectly with the fluid medium, delivering superior sealing performance and an extended service life.
3. Featuring a dual sealing design (bellows + packing): In the event of bellows failure, the valve stem packing provides an additional layer of leakage prevention, fully compliant with international sealing standards.
4. The valve cover is equipped with a grease fitting for direct lubrication of the valve stem, nut, and shaft sleeve, surpassing traditional methods that only lubricate the threads.
5. The ergonomically designed handwheel promises ease of operation, enhanced safety, greater reliability, and an extended lifespan.

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 services and troubleshooting training for common faults. We provide remote or on-site valve inspections, installation, and operation technical guidance. All technical quality consultations are addressed within 24 hours. We offer an 18-month product warranty (in accordance with national standards), 24-hour technical support hotline, and a variety of free after-sales services during the warranty period. Additionally, we provide lifetime after-sales service and limited free supply of wearing parts for 18 months.

FAQ

Q1: What is the safety valve?
1. The primary purpose of safety valves is to safeguard life, property, and the environment. A safety valve is meticulously designed to open and release excess pressure in a container or device, then re-close to prevent further fluid release once normal conditions are restored.
2. Acting as a critical safety device, the safety valve is often the final line of defense. It is crucial to ensure its functionality at all times and under all circumstances. Safety valves are not intended to serve as process valves or pressure regulators and should only be used for overpressure protection.

Q2: How does a safety valve work?
The operational principle of a safety valve is outlined as follows:
1. Open: When system pressure exceeds the safety valve's set pressure, the valve disc opens due to the combined force of medium pressure and the spring, releasing the excess pressure.
2. Keep Open: As the system pressure stabilizes within the set parameters, the spring stabilizes, maintaining system stress and keeping the safety valve open.
3. Close: When the system pressure drops below the set pressure of the safety valve, the spring force is insufficient to keep the valve open, causing the valve disc to close under medium pressure, thereby halting any further pressure increase.