Low Temperature Gate Valves

Hanno Valve Low Temperature Gate Valves are specially designed for demanding low-temperature and cryogenic operating environments. The valve adopts a precision metal sealing structure to maintain stable sealing performance even under extreme temperature conditions, effectively reducing leakage risks and ensuring safe pipeline operation.

Manufactured with carefully selected low-temperature resistant materials including stainless steel, nickel-based alloys, LCB, LF1, LF3, LC3 and CF8, the valves maintain excellent mechanical strength and impact resistance at temperatures ranging from -46°C to 196°C. The sealing surfaces of the gate and valve seat are welded with hard alloy materials to improve wear resistance and extend service life.

Multiple Valve Cover Structures

To meet different industrial installation requirements, Hanno Valve offers two bonnet structure options for Low Temperature Gate Valves:

Bolted Bonnet Design

The valve body and bonnet are connected by high-strength bolts and nuts with 316 flexible graphite gaskets for reliable sealing. Metal ring sealing structures are also available according to customer requirements.

Welded Bonnet Design

The welded bonnet structure uses threaded connection combined with full welding sealing technology, providing enhanced sealing reliability for critical cryogenic applications and hazardous media transportation systems.

Technical Features

Excellent Low Temperature Resistance

Special low-temperature resistant materials ensure stable performance without brittle fracture under cryogenic working conditions.

Superior Sealing Structure

Precision metal sealing design effectively prevents media leakage and improves operational safety.

Corrosion Resistance

High-quality stainless steel and alloy materials provide strong corrosion resistance for harsh industrial environments.

Smooth Flow Performance

Optimized internal structure design minimizes flow resistance and improves fluid transmission efficiency.

Long Service Life

Hard alloy welded sealing surfaces and precision machining technology significantly improve valve durability and operational lifespan.

Pressure rating: 1.6Mpa~2.5Mpa

Product specifications: DN15~300mm

Product Material: Carbon Steel, Stainless Steel, High Temperature Steel

Applicable temperature: -45oC~197 oC

Applicable media: ethylene, propylene, liquid nitrogen, liquid hydrogen

Technical requirements for Low Temperature Gate Valves:

1. Design, manufacturing, and acceptance shall comply with JB/T 7749-95

2. Main materials: LCB, LF1, LF3, LC3, CF8, F304, etc

3. The structural length shall be in accordance with GB/T 12221-1989 standard

4. The flange connection size shall be in accordance with JB/T 79-1994 standard

5. Applicable temperature: -46 to 196 ° C

6. The inspection and testing of valves shall comply with JB/T 9092-1999 standard

Main materials of Low Temperature Gate Valves:

1. Valve body and valve cover: stainless steel

2. Valve stem: 1Cr18Ni9Ti

3. Sealing surface of gate and valve seat: welded hard alloy

4. Valve stem nut: aluminum bronze

5. Gasket: Low temperature asbestos, wax impregnated asbestos rubber sheet

6. Packing: flexible graphite, polytetrafluoroethylene, PTFE impregnated asbestos rope

7. Handwheel: ductile iron or malleable iron

Materials

Manufacturing Strength

25+ Years Valve Manufacturing Experience

Zhejiang Hengnuo Valve Manufacturing Co., Ltd. has over 25 years of industrial valve manufacturing experience and is located in Zhejiang Lishui Bihu Valve Industrial Area, one of China's important industrial valve manufacturing bases.

Advanced Production Capability

18,000㎡ production area

150+ skilled employees

32+ senior technicians

40+ professional production equipment

The company operates its own foundry equipped with advanced precoated sand casting technology, ensuring high-precision castings, stable product quality and shorter production cycles.

Strict Quality Control

Every Hanno Valve Low Temperature Gate Valve undergoes strict inspection and pressure testing before delivery to ensure reliable performance and consistent product quality.

Application Industries

Hanno Valve Low Temperature Gate Valves are widely used in:

LNG projects

Petrochemical industry

Industrial gas systems

Air separation plants

Power stations

Chemical processing pipelines

Cryogenic storage systems

Packaging & Delivery

Hanno Valve provides secure export packaging solutions to protect valves during international transportation. Delivery schedules are arranged efficiently according to order quantity and project requirements to ensure timely shipment for global customers.