Gate Valve / Slab Gate Valve. Stainless Steel, Butt Weld, Electric Actuated, Non-Rising Stem, Steam/Corrosive Media, ASME B16.34 Standard

Product Description

Gate Valve Introduction

PRODUCT INTRODUCTION

TECHNICAL SPECIFICATIONS

• Nominal Diameter (DN): DN15 DN1400
• Nominal Pressure (PN): PN1.0, 1.6, 2.5, 4.0, 6.4, 10.0, 16.0 MPa
• Working Temperature: -29 550 (depending on material)
• Applicable Media: Water, oil products, steam, natural gas, weakly corrosive media, etc.
• Sealing Level: Soft-seated up to Class VI; Hard-seated up to Class IVV
• Flow Resistance Coefficient: 0.080.12 (extremely low in fully open condition)

MAIN COMPONENT MATERIALS

• Gray cast iron HT200: Suitable for low-pressure water and sewage applications.
• Ductile iron QT450-10: Municipal water supply and HVAC systems.
• Carbon steel WCB/A105: Steam, oil products, and medium-to-high pressure conditions.
• Stainless steel CF8 (304), CF8M (316): Chemical, acid/alkali, and seawater corrosion environments.

• 2Cr13, 304, 316
• Sealing surface overlaid with Stellite alloy or copper alloy to enhance wear resistance and sealing performance.

• 2Cr13, 304, 316 stainless steel, surface nitrided for anti-wear and anti-galling properties.

• Soft-seated: EPDM, NBR, PTFE. Suitable for normal temperature, low pressure, and zero leakage applications.
• Hard-seated: Hard alloy, stainless steel. Suitable for high temperature, high pressure, and wear-resistant conditions.

GATE VALVE CLASSIFICATIONS

1. By Stem Structure

• Rising Stem Gate Valve: The stem thread is exposed, allowing direct observation of valve opening. Easy lubrication and maintenance, less prone to medium corrosion. Suitable for outdoor and corrosive medium pipelines.
• Non-Rising Stem Gate Valve: The stem thread is built inside the valve body, saving space, dustproof and moisture-proof. Commonly used in underground pipe networks and space-limited applications.

2. By Gate Structure

• Wedge Gate Valve: The gate is wedge-shaped with good sealing performance, including elastic gate and rigid wedge gate. The most common structure.
• Parallel Gate Valve: The gate and seat have parallel sealing surfaces. Simple structure, fast opening/closing speed, suitable for medium-low pressure and large-diameter conditions.

3. By Connection Type

• Flanged Gate Valve: Easy installation and removal, reliable sealing, wide range of applications.
• Welded Gate Valve: Suitable for high temperature, high pressure, flammable and explosive media with no leakage risk.
• Threaded Gate Valve: Mostly used for small-diameter, low-pressure pipelines with compact installation.

4. By Actuation Type

• Manual Gate Valve: Handwheel or wrench operated, commonly used for small diameters.
• Gear Operated Gate Valve: Bevel gear drive to reduce opening/closing torque.
• Electric Gate Valve: Electric actuator driven, supporting remote automatic control.
• Pneumatic Gate Valve: Air source driven, suitable for explosion-proof and fast opening/closing scenarios.

PRODUCT FEATURES

• Low fluid resistance: Straight-through flow path when fully open, resulting in minimal pressure loss.
• Bidirectional flow with no installation direction restrictions.
• Low operating torque, suitable for large-diameter pipelines.
• Excellent sealing performance and long service life.
• Simple structure and convenient maintenance.