Marine F7373 Cast Iron JIS 10K Swing Check Valve Non-Return Valve

Product Details
Customization: Available
Media: Water
Temperature: Ordinary Temperature
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  • Marine F7373 Cast Iron JIS 10K Swing Check Valve Non-Return Valve
  • Marine F7373 Cast Iron JIS 10K Swing Check Valve Non-Return Valve
  • Marine F7373 Cast Iron JIS 10K Swing Check Valve Non-Return Valve
  • Marine F7373 Cast Iron JIS 10K Swing Check Valve Non-Return Valve
  • Marine F7373 Cast Iron JIS 10K Swing Check Valve Non-Return Valve
  • Marine F7373 Cast Iron JIS 10K Swing Check Valve Non-Return Valve
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  • Overview
  • Product Description
  • Company
  • Workshop
  • Packaging & Shipping
  • FAQ
  • Our Advantages
Overview

Basic Info.

Model NO.
JIS F7373
Material
Cast Iron
Connection Form
Flange
Structure
Swing
Pressure
Ordinary Pressure
Sealing Form
Gland Packings Globe Valve
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 F7373
Trademark
Customized
Origin
China
HS Code
8481804090

Packaging & Delivery

Package Size
45.00cm * 45.00cm * 45.00cm
Package Gross Weight
15.000kg

Product Description

Product Description
We support OEM and the producing capacity is big,  fast shipment, professional design team for you, welcome to contact us! 

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.

Check Valve vs. Other Marine Valves

  
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!

 Marine F7373 Cast Iron JIS 10K Swing Check Valve Non-Return ValveMarine F7373 Cast Iron JIS 10K Swing Check Valve Non-Return ValveMarine F7373 Cast Iron JIS 10K Swing Check Valve Non-Return Valve
Rating SIZE φd L H FF Flange
φD φC t
5K  50A 50 190 97 130 105 16
65A 65 220 119 155 130 18
80A 80 250 129 180 145 18
100A 100 280 146 200 165 20
125A 125 330 171 235 200 20
150A 150 380 198 265 230 22
200A 200 460 235 320 280 24
250A 250 550 290 385 345 26
10K   50A 50 210 109 155 120 20
65A 65 240 126 175 140 22
80A 80 270 136 185 150 22
100A 100 300 153 210 175 24
125A 125 350 180 250 210 24
150A 150 400 205 280 240 26
200A 200 480 242 330 290 26
 
NO. Parts Material
1 Body FC200
2 Bonnet FC200
3 Disc CAC406(BC6)
4 Valve seat CAC406(BC6)
5 Arm CAC406(BC6)
6 Hinge pin C3604
7 Plug C3604
8 Hex. nut C3604
9 Washer C2801
10 Split pin C2600
11 Stud bolt SS400
12 Hex. nut SS400
13 Gasket NON ASBESTOS
14 Gasket PTFE
TING FLUID CONDITION TEST PRESSURE(MPal
OIL AND PULSATION WATER NON-SHOCK WATER UP TO 120 HYDROSTATIC PRESS TEST(SHELL) HYDROSTATIC PRESS TEST(SEAT)
(SHELL)
JIS 5K 0.5 0.7 1.05 0.77
JIS 10K 1 1.4 2.1 1.54
RATING Nominal dia 0d 0D 0C t L H WEIGHT [kg]
JIS 5K 50A 50 130 105 16 190 97 9.06
65A 65 155 130 18 220 119 13.9
80A 80 180 145 18 250 129 19.1
100A 100 200 165 20 280 146 27.1
125A 125 235 200 20 330 171 39
150A 150 265 230 22 380 198 53.7
200A 200 320 280 24 460 235 94.4
250A 250 385 345 26 550 290 150
JIS10K 50A 50 155 120 20 210 109 13.6
65A 65 175 140 22 240 126 19.6
80A 80 185 150 22 270 136 22.6
100A 100 210 175 24 300 153 30.9
125A 125 250 210 24 350 180 49.2
150A 150 280 240 26 400 205 64.9
200A 200 330 290 26 480 242 103

Marine F7373 Cast Iron JIS 10K Swing Check Valve Non-Return Valve

Company
  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.
Marine F7373 Cast Iron JIS 10K Swing Check Valve Non-Return ValveMarine F7373 Cast Iron JIS 10K Swing Check Valve Non-Return Valve
Workshop

Marine F7373 Cast Iron JIS 10K Swing Check Valve Non-Return ValveMarine F7373 Cast Iron JIS 10K Swing Check Valve Non-Return ValveMarine F7373 Cast Iron JIS 10K Swing Check Valve Non-Return Valve
Packaging & Shipping

Marine F7373 Cast Iron JIS 10K Swing Check Valve Non-Return Valve

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

(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.

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