Descrição
Low Temperature Gate Valve, ASTM A182 F316L, Class 300 LB, RF End
Cryogenic Stainless Steel Gate Valve for Low-Temperature and Corrosive Service Applications
O Low Temperature Gate Valve, ASTM A182 F316L, Class 300 LB, RF End is a premium stainless steel isolation válvula designed for low-temperature, cryogenic, and corrosive fluid applications. Manufactured from ASTM A182 F316L austenitic stainless steel, the valve provides excellent toughness, superior corrosion resistance, and reliable sealing performance at temperatures down to -196°C (-320°F).
Engineered in accordance with API 600, ASME B16.34, ASME B16.5, e API 598, this valve is widely used in LNG terminals, industrial gas plants, petrochemical facilities, offshore platforms, and cryogenic storage systems. The full-port wedge gate design ensures minimal pressure loss and dependable bidirectional shutoff.
Product Overview
| Item | Especificação |
|---|---|
| Nome do Produto | Low Temperature Gate Valve |
| Tipo de válvula | Válvula de gaveta em cunha |
| Tamanho | Available from 2″ to 24″ |
| Pressure Rating | ASME Class 300 LB |
| Body Material | ASTM A182 F316L |
| Bonnet Type | Bolted Bonnet / Extended Bonnet |
| Wedge Material | ASTM A182 F316L |
| Stem Material | ASTM A182 F316L |
| Terminar conexão | RF Flanged End |
| Padrão de projeto | API 600 |
| Face-to-Face | ASME B16.10 |
| Flange Standard | ASME B16.5 |
| Inspection & Testing | API 598 |
| Projeto seguro contra incêndio | API 607 Optional |
| Temperatura de operação | -196°C to 425°C |
| Applicable Media | LNG, Liquid Nitrogen, Oxygen, Ethylene, LPG, Chemicals |
Características principais
ASTM A182 F316L Stainless Steel Construction
F316L is a low-carbon austenitic stainless steel known for its excellent low-temperature toughness and corrosion resistance.
Vantagens
- Outstanding impact strength at cryogenic temperatures
- Excellent resistance to chloride corrosion
- Superior weldability
- Low carbon content minimizes carbide precipitation
- Long service life
Extended Bonnet Design for Cryogenic Service
Low-temperature valves typically utilize an extended bonnet to:
- Isolate packing from extreme cold
- Prevent stem freezing
- Improve operational safety
- Reduce heat transfer
This design is especially important for LNG and liquid gas applications.
Flexible Wedge Gate Design
The flexible wedge provides:
- Bubble-tight shutoff
- Reduced seat wear
- Compensation for thermal expansion
- Reliable bidirectional sealing
- Low operating torque
RF Flanged Connection
Raised Face (RF) flanges offer:
- Easy installation and maintenance
- Reliable sealing performance
- Compatibility with ASME B16.5 flanges
- Excellent pressure containment
Especificações técnicas
Materials of Construction
| Component | Material |
|---|---|
| Corpo | ASTM A182 F316L |
| Gorro | ASTM A182 F316L |
| Wedge | ASTM A182 F316L |
| Tronco | ASTM A182 F316L |
| Seat Ring | 316L + Stellite Overlay |
| Embalagem | Cryogenic Graphite/PTFE |
| Junta | Spiral Wound SS316L + Graphite |
Design Standards
| Padrão | Descrição |
|---|---|
| API 600 | Steel Gate Valve Design |
| ASME B16.34 | Valve Design Requirements |
| ASME B16.10 | Face-to-Face Dimensions |
| ASME B16.5 | Flanged Ends |
| API 598 | Inspection & Testing |
| BS 6364 | Cryogenic Valve Requirements |
| API 607 | Fire Safe Design (Optional) |
Working Principle
The gate valve uses a linear motion mechanism to control flow.
Opening
- The handwheel rotates the stem.
- The wedge rises vertically.
- Full-bore flow passage is opened.
- Pressure drop remains minimal.
Closing
- The stem lowers the wedge.
- The wedge contacts the seat rings.
- Tight shutoff is achieved.
- Leakage is minimized.
Because the gate moves completely out of the flow path when fully open, pressure loss is extremely low.
Typical Applications
LNG Facilities
Widely used in:
- LNG storage tanks
- Loading systems
- Transfer pipelines
- Regasification terminals
LNG Application
Industrial Gas Plants
Suitable for:
- Liquid nitrogen systems
- Liquid oxygen systems
- Liquid argon lines
- Air separation units
Cryogenic Gas Application
Petrochemical Industry
Applied in:
- Ethylene processing
- Low-temperature hydrocarbons
- Refrigeration systems
- Process transfer lines
Offshore and Marine Applications
Used in:
- LNG carriers
- Floating storage facilities
- Marine fuel gas systems
- Offshore LNG platforms
Advantages of F316L Low Temperature Gate Valves
| Feature | Benefit |
|---|---|
| F316L Material | Excellent cryogenic toughness |
| Extended Bonnet | Prevents packing freezing |
| Cunha Flexível | Reliable sealing |
| Full Port Design | Minimal pressure loss |
| RF Flanges | Easy maintenance |
| Corrosion Resistance | Long service life |
F316L vs Carbon Steel Low Temperature Valves
| Property | F316L | Aço carbono |
|---|---|---|
| Low-Temperature Toughness | Excellent | Limited |
| Corrosion Resistance | Excellent | Moderate |
| Cryogenic Service | Ideal | Requires LTCS Materials |
| Weldability | Excellent | Good |
| Service Life | Longer | Padrão |
F316L is preferred for corrosive and cryogenic applications where long-term reliability is critical.
Inspection and Testing
Each valve undergoes strict quality assurance procedures:
Hydrostatic Shell Test
Ensures body integrity and pressure resistance.
Seat Leakage Test
Verifies shutoff performance.
Cryogenic Testing
Performed according to BS 6364 upon request.
PMI Material Verification
Confirms F316L chemical composition.
Optional NDE Examinations
- Ultrasonic Testing (UT)
- Radiographic Testing (RT)
- Dye Penetrant Testing (PT)
- Magnetic Particle Testing (MT)
Optional Features
Actuation
- Manual Handwheel
- Gear Operator
- Pneumatic Actuator
- Electric Actuator
Certifications
- API 607 Fire Safe
- NACEMR0175
- EN 10204 3.1 Material Certificate
- Third-Party Inspection (SGS, BV, TUV, DNV)
Seat Options
- Stellite Hardfaced Seat
- Soft Seat PTFE
- Metal-to-Metal Seat
Frequently Asked Questions
Is F316L suitable for cryogenic service?
Yes. F316L stainless steel retains excellent toughness and ductility at temperatures as low as -196°C.
Why is an extended bonnet required?
The extended bonnet isolates the stem packing from extremely low temperatures and prevents icing.
What standards apply to cryogenic gate valves?
API 600, BS 6364, ASME B16.34, API 598, and ASME B16.5 are commonly used.
Can this valve be used for LNG service?
Yes. F316L low-temperature gate valves are widely used in LNG storage, transportation, and processing facilities.
What industries use cryogenic gate valves?
LNG, industrial gases, petrochemical plants, offshore platforms, and marine fuel systems.
Request a Quote
China Low Temperature Gate Valve Manufacturer
We provide:
✅ API 600 & BS 6364 Compliant Manufacturing
✅ Cryogenic Valve Engineering Expertise
✅ ASTM A182 F316L Stainless Steel Solutions
✅ Fire Safe and Low Emission Designs
✅ Third-Party Inspection Support
✅ Worldwide Export Experience
Please provide:
- Tamanho da válvula
- Pressure Rating (Class 300)
- Temperatura de operação
- Media Type (LNG, Liquid Nitrogen, etc.)
- Quantity Required
- Special Testing Requirements
Our engineering team will provide a detailed quotation, GA drawing, material certificates, and delivery schedule within 24 hours.
