U-Type Butterfly Valve | LCB Low Temperature Body | DN50-DN2000

Product Overview

Tianjin Worlds Valve Co., Ltd. presents a U-type butterfly valve featuring an LCB low-temperature carbon steel body, a CF8 stainless steel disc, an SS410 stem, and an EPDM seat–available in sizes from DN50 to DN2000. This valve is engineered for reliable on/off and throttling control in low-temperature and cryogenic applications, including propane, liquid ammonia, ethylene, and other chilled fluid services, as well as general industrial systems where corrosion resistance and dependable sealing are required.

Introduction:

Product Name: U-Section Butterfly Valve  

Body Material: LCB, WCB, Ductile Iron, CF8, CF8M, Aluminum Bronze...optional  

Disc Material: Stainless Steel (CF8) 

Seat Material: EPDM, NBR, FKM(VITON), PTFE...(Seat material options vary depending on the media or customer preference.) 

Connection Type: Flange 

Size Range: DN50–DN2000  

Pressure Rating:  

PN10 / PN16 / PN25/ JIS 5K/10K / 150LB... 

Top Flange: Available in ISO 5211 standard for direct actuator mounting  

Operating Temperature Range: -20℃ to 120℃ (EPDM) 

Customization: All materials, dimensions, and pressure ratings can be modified according to customer requirements

 

Key Features & Advantages：

1. LCB Low-Temperature Carbon Steel Body – Reliable Cold Service Performance

• LCB (ASTM A352 Grade LCB) is impact-tested at  -46°C and offers an operating range of -46°C to +343°C.

• Industry-standard material for low-temperature and cryogenic valve applications.

• Suitable for propane, liquid ammonia, ethylene, and other chilled fluid services.

 

2. U-Type Body Design – Superior Sealing Performance

• Specially contoured "U"-shaped seat or sealing surface enables tighter sealing when closed.

• Provides automatic centering function for precise disc-to-seat alignment.

• Ideal for applications requiring a high degree of sealing performance.

 

3. CF8 Stainless Steel Disc – Corrosion Resistant & Cost-Effective

• CF8 (AISI 304) offers good corrosion resistance for water and mild chemicals.

• Smooth surface finish minimizes flow resistance and prevents media buildup.

• Upgrade to CF8M (316) available for seawater or high-chloride environments.

 

4. SS410 Stem – Strong & Wear-Resistant

• SS410 (AISI 410) stainless steel offers good strength and wear resistance.

• Provides reliable torque transmission for long-term operation.

 

5. EPDM Seat – Bubble-Tight Sealing for Water Service

• Zero leakage (Class VI) sealing for water, treated water, and mild chemicals.

• Excellent resistance to water, steam, ozone, and aging.

• Temperature range: -20°C to +120°C.

• Upgrade options: NBR (oil/fuel), Viton (aggressive chemicals/high temperature), PTFE (high-purity/wide temperature).

 

6. Wide Size Range – DN50 to DN2000

• Covers everything from small branch lines to large-diameter water mains.

• Ideal for low-temperature industrial systems, water treatment, and general service.

 

7. Fully Customizable OEM/ODM Solution

• Body materials: LCB (standard), WCB, LCC, CF8, CF8M.

• Disc materials: CF8 (standard), CF8M, duplex, super duplex, aluminum bronze.

• Seat materials: EPDM (standard), NBR, Viton(FKM), PTFE.

• Stem materials: SS410 (standard), SS304, SS316, SS431.

• Pressure ratings: PN10, PN16, PN25, Class 150, Class 300.

• Flange standards: EN 1092, ANSI B16.5, AS2129, JIS.

• Operation: Manual lever, worm gear, electric actuator, pneumatic actuator.

• Certifications: ISO 9001, CE, UKCA, WRAS, ACS available upon request.

 

Why Choose Tianjin Worlds Valve?

1. Direct OEM/ODM Manufacturer – We produce in our own ISO 9001 certified factory, not a trading company. Every U-type butterfly valve is manufactured to your exact specifications.

2. Low-Temperature Expertise – Our LCB bodied valves are engineered for reliable performance in low-temperature and cryogenic applications down to -46°C.

3. Wide Size Range – From DN50 to DN2000, covering small branch lines to large-diameter industrial systems.

4. Material Flexibility – Body, disc, stem, and seat materials are fully customizable to match your specific media and temperature requirements.

5. Certified Quality – ISO 9001 certified with CE, UKCA, WRAS, and ACS certifications available upon request.

6. Full Documentation – Material certificates (mill test reports) and pressure test reports provided with every order.

7. Global Export Experience – Supplying valves to over 50 countries with reliable logistics and technical support.

 

Conclusion:

We invite you to contact us for a competitive quotation or to arrange a visit to our factory. Our engineering team is ready to discuss your specific size, material, pressure, and temperature requirements – whether you need a standard DN150 U-type butterfly valve or a fully customized solution up to DN2000 with special materials or actuation.