Normal JIS Stop Valve JIS F7412 Angle Type Check Valve

• Customization: Available
• Media: Water
• Temperature: Ordinary Temperature
• Model NO.: JIS F7412
• Material: Bronze
• Connection Form: Flange
• Structure: Elevated
• Pressure: Ordinary Pressure
• Function: Marine Usage
• Sealing Form: Gland Packings Globe Valve
• Flow Direction: Unidirection
• Standard: JIS
• Application: Industrial Usage, Water Industrial Usage, Household Usage, Marine Usage
• Delivery: Express or by Sea
• Price: Competitive
• Production: in Stock
• Capacity: 100000 Pieces/Year
• Transport Package: Plywood Box
• Specification: JIS F7412
• Trademark: Customized
• Origin: China
• HS Code: 8481804090
• Package Size: 20.00cm * 20.00cm * 20.00cm
• Package Gross Weight: 2.000kg

Product Description

Marine Check Valve - Definition & Function

A marine check valve (or non-return valve) is a specialized one-way valve designed for shipboard piping systems to prevent backflow of liquids or gases (e.g., seawater, fuel, oil, or compressed air). It ensures fluid flows only in the intended direction, automatically closing when flow reverses-critical for safety and system integrity in marine environment.

Key Features of Marine Check Valves

Automatic Operation
Opens when forward pressure exceeds the cracking pressure.
Closes instantly if backflow or pressure loss occurs (e.g., pump failure).
Robust Marine-Grade Materials
Bronze, stainless steel, or duplex alloys for corrosion resistance in seawater.
Reinforced elastomers for sealing in oily or chemical-laden fluids.
Types Used on Ships
Swing Check Valve: Hinged disc swings open/closed (common in large pipes).
Lift Check Valve: Disc moves vertically (high-pressure systems).
Ball Check Valve: Uses a floating ball (compact, for viscous fluids).
Dual-Plate Check Valve: Spring-loaded plates for rapid closure (reduces water hammer).
Critical Marine Applications
Bilge & Ballast Systems: Prevents flooding back into pumps.
Fuel/Oil Transfer Lines: Stops contamination from reverse flow.
Cooling Water Circuits: Protects engines/heat exchangers.
Firefighting Systems: Maintains pressurized water supply.

Why Ships Rely on Check Valves

• Safety: Avoids backflow-induced equipment damage (e.g., flooded bilges, pump cavitation).
• Maintenance Reduction: No manual intervention needed-works passively.
• Compliance: Meets IMO (International Maritime Organization) and class society (e.g., ABS, DNV) standards.

Valve Type	Primary Function	Marine Use Case
Check Valve	Block reverse flow	Bilge pumps, fuel lines
Globe Valve	Throttle/adjust flow	Cooling water control
Gate Valve	Fully open/close flow	Main seawater intake
Ball Valve	Quick on/off operation	Fuel tank isolation

Need help selecting a check valve for a specific ship system? Ask away!

Product Description

 

Details
Material Table
Part Name	Body		Bonnet		Disc		Stem	Gasket	Hand Wheel
Material	ZCuSn5Pb5Zn5		ZCuSn5Pb5Zn5		ZCuSn5Pb5Zn5		HPb59-1	Non-asbestos	FC200
Size Table(F 7412 Bronze 5K)
DN	d	L	D	C	No.	h	t	H	D2
15	15	55	80	60	4	12	9	140	80
20	20	60	85	65	4	12	10	150	100
25	25	65	95	75	4	12	10	170	125
32	32	80	115	90	4	15	12	170	125
40	40	85	120	95	4	15	12	180	140
Size Table(F 7414 Bronze 16K)
DN	d	L	D	C	No.	h	t	H	D2
15	15	70	95	70	4	15	12	140	80
20	20	75	100	75	4	15	14	150	100
25	25	85	125	90	4	19	14	170	125
32	32	95	135	100	4	19	16	170	125
40	40	100	140	105	4	19	16	180	140

Company Profile

  Qingdao Hongfeng Xianglong Valve Manufacturing Co., Ltd. is a professional marine valve manufacturing enterprise located in Mingcun Town, Pingdu City, Qingdao, China. We mainly produce marine valves and accessories like gate valve, globe valve, stop valve,check valve, stop-check valve, butterfly valve, ball valve, storm valve with Japanese, German, and national standards. Providing customers with high-quality and efficient products and services is our business philosophy, which we have always followed and continuously developed over the years.
  The company's predecessor has been deeply involved in railway parts for 16 years, with rich processing technology and advanced processing equipment. It has an experienced professional team that can carry out specialized production from product design, mold development, product casting, processing, assembly, and testing. High quality products have won us the trust of customers, and good service has established a long-term cooperative relationship.
  The company's factory has complete production and equipment, with an 8000 square meter production workshop and around 60 employees. It has a complete management team and management process, equipped with processing workshops, assembly workshops, pressure testing workshops, painting workshops, and complete valve production equipment such as lathes, milling machines, CNC machines, drilling machines, valve sealing test benches, and painting assembly lines. While ensuring internal quality, it provides customers with the shortest delivery time.

Workshop

 

Packaging & Shipping

FAQ

Q: Are you trading company or manufacturer ?
A: We are manufacturer in PingDu city, Qingdao city, China.
Q: What's your product range?
A: We produce marine valves, like gate valve, check valve, stop valve, stop-check valve, globe valve, ball valve, butterfly valve and accessories .
Q: What's Execution Standard?
A:JIS/GB/DIN/BS etc.
Q: What's your Strong product ?
A: Gate valve.
Q: How long is your delivery time?
A: Normally it is 3 days if the goods are in stock. or it is 35 days if the goods are not in stock, it is based on the quantity.
Q: Do you provide samples ?
A: Yes, we could offer the sample. 
Q: What is your terms of payment ?
A: 30% deposit in advance and balance before shipment.
Q: What's the packing?
A: Plywood packing.
Q: Can I have my own logo on the products?
A: Yes, you can send us the drawing and we can make it.
Q: Can you produce the products based on my own drawing?
A: Yes.
Q: Which price terms can be accepted?
A: FOB,CIF etc.

Our Advantages

Our advantages:
(1)Own production line and workshop to do all processes so can save cost and offer you competitive price.
(2)Own workshop to control schedule more flexibly.
(3)We can assure quality in every process in production line.
(4)Class Approval Certifications.
(5)Quality guarantee after sale.