API Corrosion Resistant Cast Steel Bolted Bonnet Double Flexible Wedge Flanged Gate Valve

Product Description

J-VALVES provide Industrial Valves, including , , , ,, and other types , 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  standards requirements. 

Product Description

Size Range	2″ to 48″ (DN50 to DN1200)
Pressure Class	Class 150 to Class 2500 (PN20 to PN420)
Temperature Range	-29℃ to +425℃
Body	LCB, LCC, CF8 (304), CF8M (316), CF3 (304L), CF3M (316L), CN7M (Alloy 20), CD4MCu, CK3MCuN (254SMO)
Gate	CF8M, F316, F304, duplex stainless steel, Alloy 20; hardfaced with Stellite or cemented carbide
Stem	F304, F316, 17-4PH, XM-19, Alloy K-500
Seat	CF8M + Stellite, F316 + Stellite, body hardfaced with cemented carbide, inlaid with elastic materials
Packing	Flexible graphite, PTFE, graphite braided with nickel wire, low-emission packing
Gasket	Flexible graphite composite gasket, spiral wound gasket, metal ring gasket
End Connection	Flanged (RF, RTJ, FF), in accordance with ASME B16.5
Operation	Manual, bevel gear, electric, pneumatic, hydraulic
Design Standard	API 600, API 6D, ASME B16.34
Test Standard	API 598
Face-to-Face Dimension	In accordance with ASME B16.10

Construction Features

Corrosion-Resistant Cast Steel Material: The valve body is made of corrosion-resistant cast steel such as LCB, LCC, CF8, CF8M, CF3, CF3M, CN7M (Alloy 20), CD4MCu (Duplex Stainless Steel), etc. It provides excellent corrosion resistance and is suitable for various corrosive media including acidic, alkaline and chloride-containing fluids.
Bolted Bonnet: The bonnet is connected to the valve body via bolted flanges, featuring a simple and reliable structure, convenient for in-line maintenance and internal inspection. This is a classic design for medium and high-pressure valves.
Double Flexible Wedge Design: The gate consists of two wedge-shaped discs with elastic elements (such as springs or spherical gaskets) in between. It can automatically compensate for angular deviations and thermal deformation of the seat sealing surfaces, ensuring reliable bi-directional sealing.
Optional Full Bore or Reduced Bore Design: Both full bore and reduced bore configurations are available. Full bore offers low flow resistance and easy pigging, while reduced bore provides better economy and lighter weight.

Applications

Oil & Gas Industry: Used in the exploitation, gathering, transportation and treatment systems of sour oil and gas fields containing HS, CO and chlorides, resisting sulfide stress cracking and corrosion.
Chemical & Petrochemical Industry: Suitable for reliable shut-off of highly corrosive media such as sulfuric acid, hydrochloric acid, nitric acid, caustic soda and organic solvents.
Marine & Coastal Engineering: Applied in seawater desalination, offshore platforms and coastal power plants for seawater corrosion resistance.
Power Industry: Used in corrosive working conditions such as flue gas desulfurization (FGD), wastewater treatment and chemical dosing.
Pulp & Paper Industry: For control of corrosive media including chlorine-containing bleaching liquors and black liquor.
Pharmaceutical & Food Industry: Stainless steel versions meet hygienic requirements, used for corrosive cleaning media and process fluids.
Environmental Protection & Water Treatment: For corrosion-resistant isolation in sewage treatment, reclaimed water reuse and waste gas treatment systems.

Pressure Testing

Testing and Inspection standard according to API598

Pressure	150LB	300LB	600LB	900LB	1500LB	2500LB
Strength Testing	3.0	7.5	15.4	23.0	37.5	63.0	Mpa
Seal Testing	2.2	5.5	11.2	16.9	27.5	46.2
Air Testing	0.6	0.6	0.6	0.6	0.6	0.6

After-sales Service

1.  24/7 Global Technical Support.
2.  Rapid Emergency Repair & Replacement.
3.  On-Site Field Service Technicians.

4.  Comprehensive Valve Repair & Overhaul.
5.  Genuine OEM Spare Parts Guarantee.
6.  Proactive Maintenance Programs.

7.  Extended Warranty Options.
8.  Valve Retrofit & Upgrade Services.
9.  Detailed Installation & Operation Training.
10. Full OEM Documentation & Lifecycle Support.

Company Profile

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 includingFire 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 . These products are available in materials such as , catering to demanding applications in petroleum, architecture, metallurgy, chemical, electricity, and hydraulic industries.
 
Supported by a dedicated technical team and rigorous quality inspection department, J-VALVES delivers customized products and services. Every product undergoes to ensure excellence. The company's meticulous management system and growing, dynamic team drive its sustainable development.

Factory Advantage

Other Products

OEM/ODM capabilities
Competitive pricing & bulk discounts
Fast shipping & customs clearance support
Turnkey project solutions
Professional engineer and quality control team
100% inpection before delivery 
15000 square meters factory 
Strong production capacity
Professional coordination skills

Floating type Ball Valve
Trunnion type Ball Valve
Soft Seat Ball Valve
Metal Seat Ball Valve
API600 Gate Valve
API623 Globe Valve
BS 1868/API6D Check Valve
Plug Valve
Triple Offset Butterfly Valve
Y & Busket Type Strainer

Certifications

Packing & Delivery

Delivery Time	10-30 Days
Package	Standard Exporting Plywood Case
Shipping Port	Ningbo/Shanghai sea port, China
Shipping Terms	EXW, FCA,CPT CIP, DAP, DPU. DDP, FAS.FOB.CFR.CIF
Payment Terms	T/T. DP, LC at sight
Payment condition	30% prepayment, 70% balance paid before shipping or against copy of BL
Country of Origin	China
Production Capacity	8000 Ton/year
Certificates	API6D.API600,API602,API607.CE,ISO9001,IS014001,IS045001.SIL3.and IS015848.CE
MOQ	10 PCS/size(Special material depends on)

Products Package

FAQ

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