J-Valves High Pressure 3× 2" Class 600 Duplex Stainless Steel API 6D for Natural Gas Flange/Thread Zero Leakage Dbb Ball Valve for Water

• Customization: Available
• Media: Water, Natural Gas, Oil and Some Corrosive Liquid
• Material: Stainless Steel/Duplex Steel/Aluminium Bronze/Nick
• Model NO.: JVALVES-Q41F
• Connection Form: Flanged FF/RF/Rtj, Bw Ends
• Driving Mode: Manual,Electric,Pneumatic
• Nominal Pressure: ANSI CLASS 150-900
• Channel: Straight Through Type
• Structure: Floating Ball Valve
• Type: Dbb Ball Valve
• Function: Blow-Down Valve, Relief Valve, Atmospheric Valve, Bypass-Valve
• Temperature: Normal Temperature
• Standard: API 6D, API 608, BS 5351/DIN3357/JIS B2071
• Application: Industrial Usage, Water Industrial Usage, Household Usage
• Seat Material: Stainless Steel
• Nominal Diameter: 1/2"-48"(DN25-DN1200)
• Quality Warranty12 Month After Install: 12 Month After Install
• Delivery Term: EXW, Fob, Fca, CFR, CIF, etc.
• Transport Package: Exporting Plywood Case
• Trademark: J-VALVES
• Origin: China
• HS Code: 8481804090
• Production Capacity: 10000 Ton/Year
• Package Size: 50.00cm * 50.00cm * 50.00cm
• Package Gross Weight: 10.000kg

Product Description

Nominal Size	3″ × 2″ (DN80 × DN50)
Pressure Class	Class 600 (PN100)
Temperature Range	-29℃ to +425℃
Body	Duplex stainless steel ASTM A182 F51 (2205), F53 (2507), F55 (Zeron 100)
Ball	F51/F53/F55 duplex stainless steel, surface hardened (HVOF tungsten carbide coating)
Stem	F51/F53/F55 duplex stainless steel, precipitation hardened
Seat	RPTFE / Devlon / Vespel soft seal + Inconel / Stellite alloy metal seal
Packing	Pure graphite, low-emission graphite + PTFE combination
Bolting	B8M, B7M, Alloy 660 (hydrogen embrittlement resistant)
End Connection	One end flanged (RF / RTJ), one end threaded (NPT / BSPP / BSPT)
Operation	Manual (gearbox / extended stem), pneumatic, electric, pneumatic-hydraulic, emergency shutdown (ESD)
Design Standards	API 6D, ASME B16.34, API 608
Testing Standards	API 6D, API 598
Face-to-Face Dimensions	ASME B16.10

1. Clear Manual Opening/Closing Indication
The ball, valve stem and handle constitute an integrated moving assembly. The valve stem features a flat square end for intuitive position recognition. The valve is fully open when the flat square of the handle or valve stem runs parallel to the pipeline axis, and fully closed when perpendicular to the pipeline axis.

2. Anti-misoperation Locking Structure
The valve supports locking at both fully open and fully closed positions, adapting to on-site installation and working conditions that forbid incorrect operation. Fitted with a positioning plate with lock holes, the valve can be locked as needed to prevent misoperation by unauthorized personnel.

3. Valve Stem Anti-blowout & Anti-leakage Structure
A boss structure is designed at the lower section of the valve stem to eliminate potential safety risks. It effectively prevents valve stem blowout and medium ejection that may cause personal injury during pressurized operation or pressure relief for maintenance. Under extreme working conditions such as fire, even if the packing and thrust bearing are damaged, the valve stem boss can fit tightly with the valve body sealing surface to avoid massive medium leakage.

4. Anti-static Structure
Friction between the ball and non-metallic valve seat during valve operation generates static charge that accumulates on the ball. The built-in anti-static device establishes a static discharge channel through the ball, valve stem and valve body to export accumulated static electricity, avoid static spark generation and ensure safe operation.

5. Fire-safe Structure
In fire scenarios, after non-metallic components including valve seat and packing are burnt out, the ball can make direct contact with the valve body metal surface to block large-scale medium leakage and restrain fire spread. The fire-safe and anti-static design fully complies with API 607, JB/T 6899 and BS 6755 Part 2 standards.

6. Central Flange Zero External Leakage Structure
The valve body connection adopts a dual sealing structure combining gasket sealing and metal-to-metal shoulder contact. This tenon flange structure resists leakage induced by high temperature, fire, pipeline vibration and other adverse factors, realizing zero external leakage and maintaining high sealing stability of the valve.

7. Reliable Multi-condition Valve Seat Sealing Structure

Developed with years of manufacturing experience and international advanced technologies, the optimized double-line self-relief valve seat structure ensures reliable sealing under high pressure, low pressure and vacuum conditions. Under low pressure, the small contact area between the valve seat and the ball provides high specific sealing pressure for tight sealing. Under high pressure, the increased contact area enables the valve seat to withstand medium thrust without damage.

For low-pressure, ultra-low-pressure and vacuum working conditions, a spring-loaded valve seat structure is adopted to compensate for the attenuation of pre-tightening force and guarantee long-term reliable sealing. For medium and high-temperature conditions, polyphenylene sulfide (PPS) sealing rings are applicable for temperatures up to 300°C, while metal sealing composite structures are used for higher temperature scenarios. All sealing structures support one-way sealing performance.

8. Automatic Cavity Pressure Relief Structure

9. Full Bore & Reduced Bore Series

When the medium trapped in the valve cavity generates abnormal pressure rise due to changes in pipeline pressure or medium temperature, the medium can push the valve seat to realize automatic pressure relief, eliminating overpressure risks and ensuring safe valve operation.

Our ball valves are available in full bore and reduced bore series to meet diverse user demands. The full bore ball valve features an inner diameter consistent with the pipeline, offering minimum fluid resistance and convenient pipeline pigging. The reduced bore ball valve weighs only about 70% of the full bore type of the same caliber, effectively reducing costs. Its fluid resistance coefficient is merely 1/7 of that of a same-caliber globe valve, making it widely applied in industrial fields for high cost performance.

ball /gate /globe /check/triple offset butterfly /plug /strainer /other types customized valves

J-VALVES provide Industrial Valves, including ball valve, gate valve, globe valve, check valve, triple offset butterfly valve, plug valve,  strainer and other types customized valves, which use for pipeline and equipment connections. 
 
Our Products could produce in both casting and forging type to meet different applications. J-VALVES products could meet ISO9001, ISO45001, ISO14001, CE, ISO15848, API607  standards requirements. 

	Ball Valve	Gate Valve	Globe Valve	Check Valve	butterfly Valve	Strainer
Size ranging	1/2"~56"	1/2"~56"	1/2"~48"	1/2"~56"	2"~112"	1/2"~24"(Y type) 2"~48"(basket )
temperature	-29~+425ºC	-29~+425ºC	-29~+425ºC	-29~+425ºC	-29~+425ºC	-29~+425ºC
Pressure	150LB~2500LB	150LB~2500LB	150LB~2500LB	150LB~2500LB	150LB~900LB	150LB~1500LB(Y) 150LB~600LB(B)
Medium	Water, Oil, Gas, etc	Water, Oil, Gas, etc	Water, Oil, Gas, etc	Water, Oil, Gas, etc	Water, Oil, Gas, etc	Water, Oil, Gas, etc

Material of valve body/bonnet	specific materials
carbon steel	WCB,A105,A105N,LF2,LF3,WCC
austenitic stainless steel	CF8,CF8M,CF3,CF3M,F304,F316
duplex stainless steel	S32205,S32750,F51,F53,F55,CD4MCu
Chrome-molybdenum high-temperature alloy steel	WC5,WC6,C5,F11,F22,F5
cast iron	HT200,HT250,QT450
bronze	C95500,C95800,C63200
special alloy	F-2,Aloloy 20,Inconel 625

ZHEJIANG J-VALVES FLUID EQUIPMENT CO., LTD

Zhejiang J-VALVES Fluid Equipment Co., Ltd., founded in 2018 and headquartered in Wenzhou, Zhejiang Province, is an integrated manufacturing and trading company specializing in the export of industrial valves and pipeline fittings. The company holds certifications including ISO 9001, ISO 14001, ISO 45001, ISO15848, CE Marking (EU), and API 607 Fire Safe Certification, demonstrating its commitment to providing customers with safe, reliable, and competitive products, along with professional industry solutions and high-quality services.

J-VALVES main product lines include Ball Valves, Gate Valves, Globe Valves, Check Valves, Plug Valve, Triple offset butterfly valve and Strainers. These products are available in materials such as Carbon Steel, Stainless Steel, Duplex Steel, Super Stainless Steel, Alloy Steel, Bronze Alloy, Titanium Alloy, Copper Alloy, Monel Alloy, Nickel Alloy, and Hastelloy, catering to demanding applications in petroleum, architecture, metallurgy, chemical, electricity, and hydraulic industries.

1. Are you a trading company or factory? 
We are a manufacturer factory and we also have our own exporting license. 
 
2. Do you have certificate? 
Yes, ISO9001, ISO14001, ISO45001, API6D, API600, API602, CE, PED certificate. We also have some patents in design. 
 
3. How do you control the quality? 
In quality control, the most important is to avoid material mixing. 
In our factory, 3 spectro PMI machines are used in raw material warehouse, production plant, dispatch plant. 
Pressure inspecting machine, PMI machines, RA roughness spector, hardness testing machine...All machines help in inspection.4 staff inspect during production in different sections.5 staff inspect the finished productions to avoid shortage, poor quality, mixing chemical...
 
4. How big factories do you have?
We have total 25000 square meters in Wenzhou city & Lishui city, Zhejiang Province, China. 
 
5. If there is any quality problem, how do you solve it? 
We are very proud that we never make one customer leave us. We are not 100% perfect, there is some quality problem. 
Normally replacement, or compensation, or resend goods to customers as per the condition. To be discussed as per condition. 
 
6. How long is your delivery time? 
For normal products in 7-10 days; For bulk order, in 15-25 days. It depends. 
 
7. Warranty time? 
3 years warranty for all of our stainless steel products. Gaskets or the easy broken parts are not included due to the different application for customers. 
 
8. Why trust in us? 
14 years in this industry. It makes us professional. Good credit in this market. 
All of our machines are the assurance of our responsibility. 
 
9. Free sample? 
Free samples can be provided for first cooperation under sincere cooperation