High Quality Gate Valves for Industrial Applications

Gate valves are essential components in various piping systems, designed to control the flow of liquids and gases. Our premium gate valves offer reliable performance, durability, and precise flow control for industrial applications.

Gate Valve Product Specifications

Our gate valves come in various sizes and materials to suit different requirements:

• Material: Cast Iron, Ductile Iron, Carbon Steel, Stainless Steel, Bronze
• Size Range: 2" to 24" (DN50 to DN600)
• Pressure Rating: 150# to 2500#
• End Connection: Flanged, Threaded, Socket Weld, Butt Weld
• Temperature Range: -20°C to 425°C (-4°F to 797°F)
• Standards: API, ANSI, ASME, BS, DIN, JIS
• Operation: Manual, Gear Operated, Electric Actuated, Pneumatic Actuated

Gate Valve Technical Comparison

Type	Rising Stem	Non-Rising Stem
Visibility	Easy to see valve position	Position not visible externally
Space Requirement	Needs vertical space	Compact design
Maintenance	Easier to maintain	More difficult to service
Applications	Above-ground installations	Underground or space-limited areas

Gate Valve FAQ Section 1

Q: What is the main advantage of using a gate valve?

A: The primary advantage of a gate valve is its ability to provide minimal pressure drop when fully open. The straight-through flow path allows for unobstructed flow, making gate valves ideal for applications where low fluid resistance is crucial. Another significant benefit is the tight shut-off capability when fully closed.

Q: Can gate valves be used for throttling applications?

A: Gate valves are not recommended for throttling service. They are designed to be either fully open or fully closed. Partial opening can cause vibration and damage to the disc and seats, leading to premature wear and potential leakage.

Material Specifications for Gate Valves

Material	Advantages	Common Applications
Carbon Steel	High strength, good temperature resistance	Steam, oil, gas services
Stainless Steel	Corrosion resistance, hygienic	Chemical, food processing, marine
Bronze	Good corrosion resistance, marine applications	Seawater, plumbing systems
Ductile Iron	Stronger than cast iron, impact resistant	Water distribution, industrial piping

Gate Valve FAQ Section 2

Q: How often should gate valves be maintained?

A: Regular maintenance intervals depend on operating conditions. For standard applications, inspection every 6-12 months is recommended. Critical services may require more frequent checks. Maintenance typically includes lubrication of stem and gears, checking for leaks, and verifying proper operation.

Q: What is the difference between a wedge gate valve and a parallel slide gate valve?

A: Wedge gate valves have a tapered disc that fits into matching seats to create a tight seal, ideal for high-pressure systems. Parallel slide gate valves have flat discs that are forced against flat seats by the fluid pressure, better suited for applications with potential thermal expansion.

Installation Guidelines for Gate Valves

• Install with proper alignment to avoid stress on valve body
• Ensure adequate space for operation and maintenance
• Follow proper torque specifications when tightening bolts
• Consider flow direction (some gate valves are bidirectional)
• Support piping properly to prevent valve deformation

Gate Valve FAQ Section 3

Q: What causes gate valve stem leakage and how can it be prevented?

A: Stem leakage typically occurs due to worn packing material, improper packing installation, or stem damage. Prevention methods include proper packing maintenance, using compatible materials for the service conditions, and avoiding excessive torque during operation.

Q: How do I select the right gate valve for my application?

A: Consider these factors: fluid type (compatibility with materials), pressure and temperature requirements, flow characteristics, operation frequency, installation environment, and regulatory requirements. Consulting with our technical specialists can help ensure optimal valve selection.

Pressure-Temperature Ratings

Class	Max Working Pressure (psi)	Temperature Range (°F)
150#	285	-20 to 850
300#	740	-20 to 850
600#	1480	-20 to 850
900#	2220	-20 to 850

Our high-quality gate valves are engineered to deliver reliable performance in demanding industrial environments. With various materials, sizes, and pressure ratings available, we can provide the perfect solution for your specific application requirements.