Product Description
I. Product Positioning and Core Functions
The JIS cast iron straight-through globe valve is a manual shut-off valve compliant with Japanese Industrial Standards (JIS). It uses a handwheel to drive the stem upward/downward, bringing the disc into tight contact with the seat to shut off or throttle media (liquid/gas). With a straight-through flow path + metal-to-metal seal, it suits medium-low pressure, low-corrosion applications, widely used in marine pipelines and industrial auxiliary systems. Core values: reliable sealing + JIS compliance.
II. Core Structure and Design Details
1. Main Structure
- Flow Path: Straight-through (media flows along the seat centerline, with less turbulence but higher resistance than gate valves). Discs are flat or conical, forming line/face contact with the metal seat for reliable sealing.
- Actuation System: Handwheel (cast iron/phenolic plastic) drives the stem (T-thread) via screw transmission. The stem connects rigidly (or hingedly) to the disc, requiring multiple rotations to open/close (e.g., DN50 needs ~10-15 turns).
- Sealing Pair: Metal-to-metal sealing (cast iron/bronze) between disc and seat. Some models add soft seals (e.g., PTFE) for mild corrosion. Complies with JIS F7307 leakage standards (bubble test, no visible leakage at low pressure).
2. Connection and Installation
- Connection: Flanged (mainstream), with dimensions per JIS B2220. Two types:
- Marine (JIS F7307): Flanges with locating bosses (for ship pipelines).
- Industrial (JIS F7309): Flat-weld flanges (for general industrial use).
- Flow Direction: Unidirectional-install per the arrow ("low inlet, high outlet") to use media pressure for sealing (reverse installation causes leakage).
III. Material System and Performance Adaptation
| Component |
Common Materials |
Performance |
Applications |
| Body/Bonnet |
Grey Cast Iron FC200/FC250 (JIS G5501) |
Low cost, good castability; resists fresh water/oil |
Marine fresh water, industrial cooling |
| Disc/Seat |
Cast Iron (surface-hardened)/Bronze (C3604) |
Bronze resists corrosion better than cast iron; suits mild seawater |
Marine fuel systems (bronze), industrial oil lines |
| Stem |
Stainless Steel SUS304/410 (JIS G4303) |
Rust-resistant, torsion-proof; prevents jamming |
Humid environments (engine rooms, basements) |
| Handwheel |
Painted Cast Iron/Phenolic Plastic |
Cast iron: impact-resistant; Plastic: lightweight |
Outdoor (cast iron), indoor (plastic) |
IV. Technical Parameters (Typical JIS Values)
| Parameter |
10K Class (Common) |
16K Class (High-Pressure) |
| Nominal Diameter (DN) |
DN15 ~ DN200 (Mainstream: DN25-DN100) |
Same as 10K; large sizes (DN150+) need reinforced bodies |
| Nominal Pressure (PN) |
1.0MPa (~1.0MPa for 10K) |
1.6MPa (~1.6MPa for 16K) |
| Operating Temp. |
-10ºC ~ 120ºC (cast iron limit) |
Same as 10K; verify for high temps |
| Suitable Media |
Fresh water, short-term seawater, fuel, lube oil, low-pressure steam (≤100ºC) |
Same as 10K; avoid strong acids/alkalis, abrasive media |
| Leakage Class |
JIS F7307 Class 6 (no visible leakage) |
Same as 10K; finer seat lapping |
V. Standards and Certifications
- Manufacturing Standards:
- Marine: JIS F7307 (Marine Cast Iron Globe Valves) (flanges with bosses).
- Industrial: JIS F7309 (General-Purpose Cast Iron Globe Valves) (flat flanges).
- Pressure Tests: Per JIS B2003-Shell test: 1.5×PN; Seat test: 1.1×PN.
VI. Application Scenarios and Advantages
Core Applications
- Marine Systems: Main engine fuel supply (shut-off fuel), fresh water cooling (control flow), bilge/ballast lines (manual on/off).
- Industrial Auxiliaries: Low-pressure steam (≤100ºC, e.g., heating), machine tool lube lines, small boiler feedwater (shut-off water).
- Advantages
- Reliable Sealing: Metal-to-metal sealing ensures tight shut-off in medium-low pressure (e.g., fuel leak prevention).
- JIS Compatibility: Dimensions/pressure ratings match JIS, compatible with Japanese/Southeast Asian equipment (e.g., Mitsubishi, Kawasaki).
- Easy Maintenance: Simple disassembly; replace discs/seats individually (no need to replace the entire valve).
VII. Limitations and Precautions
Limitations
- High Flow Resistance: Local resistance coefficient is 5-10× higher than butterfly valves-unsuitable for high-flow, energy-sensitive lines.
- Material Constraints: Cast iron resists neither strong corrosion (acids/alkalis) nor high temps (>150ºC)-prone to body rust or seal failure.
- Slow Operation: Requires multiple rotations to open/close-unsuitable for emergency quick shut-off.
Precautions
- Flow Direction: Strictly install per the "low inlet, high outlet" arrow-reverse installation causes insufficient sealing pressure and leakage.
- Media Cleanliness: Install filters for particle-containing media to avoid seat scratching (metal seats leak rapidly if damaged).
- Long-Term Storage: Loosen the stem by rotating the handwheel before operation (prevents rust jamming), then actuate slowly.
Certifications
Packaging & Shipping
Company Profile
Our company mainly adopts standards such as Chinese national standards, German standards, British standards, American standards, Japanese standards, and Australian standards. We produce products with a nominal diameter ranging from DN15 to DN3000, a pressure class from 0.60 Mpa to 6.4 Mpa, and a working temperature from -20°C to 150°C. The materials mainly include gray cast iron, ductile iron, cast steel, stainless steel, duplex steel, etc. Our products mainly include soft-sealed butterfly valves, soft-sealed gate valves, check valves, filters, ball valves, globe valves, balance valves, diaphragm valves, etc.
We always strive for excellence and keep improving. In recent years, the company has continuously enhanced its management level, we meet the needs of customers, We obtained the ISO9001 Quality Management System Certification and the British WARS Drinking Water Certification. our products are exported to countries and regions in Europe, Asia, Africa and other places, and we have won the trust and praise of a large number of customers. Adhering to the quality policy and maintaining the quality objectives, the people of Auswell valve Co., Ltd are willing to join hands and make full cooperation with our colleagues in the valve industry. Let's work together to make Chinese manufacturing go global.
Tianjin Auswell Valve Co., Ltd. It is located in a famous historical town in China, Which" thrived due to its history and gained fame because of its rice".Industrial Park,Xiaozhan Town,Jinnan District,Tianjin.The company has comprehensive production capabilities such as product design, mold manufacturing, machining, rubber smelting, epoxy spraying, valve assembly, and testing.
The advanced processing equipment and exquisite craftsmanship ensure that each product meets national or international standard requirements. We work with the craftsmanship spirit, Our company pursues excellence in our products and provides customers with high-quality products.
Our company mainly adopts standards such as Chinese national standards, German standards, British standards, American standards, Japanese standards, and Australian standards. We produce products with a nominal diameter ranging from DN15 to DN3000, a pressure class from 0.60 Mpa to 6.4 Mpa, and a working temperature from -20°C to 150°C. The materials mainly include gray cast iron, ductile iron, cast steel, stainless steel, duplex steel, etc. Our products mainly include soft-sealed butterfly valves, soft-sealed gate valves, check valves, filters, ball valves, globe valves, balance valves, diaphragm valves, etc.
Our company mainly adopts standards such as Chinese national standards, German standards, British standards, American standards, Japanese standards, and Australian standards. We produce products with a nominal diameter ranging from DN15 to DN3000, a pressure class from 0.60 Mpa to 6.4 Mpa, and a working temperature from -20°C to 150°C. The materials mainly include gray cast iron, ductile iron, cast steel, stainless steel, duplex steel, etc. Our products mainly include soft-sealed butterfly valves, soft-sealed gate valves, check valves, filters, ball valves, globe valves, balance valves, diaphragm valves, etc.
We always strive for excellence and keep improving. In recent years, the company has continuously enhanced its management level, we meet the needs of customers, We obtained the ISO9001 Quality Management System Certification and the British WARS Drinking Water Certification. our products are exported to countries and regions in Europe, Asia, Africa and other places, and we have won the trust and praise of a large number of customers. Adhering to the quality policy and maintaining the quality objectives, the people of Auswell valve Co., Ltd are willing to join hands and make full cooperation with our colleagues in the valve industry. Let's work together to make Chinese manufacturing go global.
FAQ
1) Q: Are you a manufacturer or trading company?
A: Hoswell Valve is a professional valve manufacturer with experienced R&D team.
2) Q: Do you have any agent or representative abroad?
A: Yes, we have agents in some countries, they can offer local service for you.
3) Q: What kinds of valve can you supply?
A: We can supply butterfly valve, ball valve, check valve and so on.
4) Q: Do you have any certificate for the valves?
A: Yes, we have CE, BV, ATEX, TS and so on.
5) Q: What's the delivery time?
A: If all the parts of the valve are ready in stock, the valves can be delivered within 7~10 days.
6) Q: What are the countries or regions you supply valves?
A: Hoswell valves have been supplied to USA, Europe, Australia, Singapore, South Africa and so on.
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