On August 5, 2026, leaders from Zhengzhou’s “Three Associations” (San Hui) and representatives from member enterprises toured the gate valve manufacturing facility of Henan Gaoshan Valve Co., Ltd., reviewing the company’s 50-year manufacturing history, R&D output, and production capacity. A…
A shut-off device trusted in pipelines worldwide — here’s what’s happening inside. Introduction When it comes to isolating flow in a pipeline, few components are as widely used as the gate valve. You will find them in oil & gas, water…
Gate valves and globe valves are both quarter-turn-free, handwheel-operated valves that look similar from the outside — flanged body, rising or non-rising stem, a handwheel on top. But inside, they solve two different problems. A gate valve is built to…
Selecting the correct disc material is one of the most overlooked — yet most critical — decisions when specifying a butterfly valve. The disc material directly affects corrosion resistance, seat life, torque requirements, and long-term maintenance costs. As a manufacturer…
Last updated: August 2026 | By Gaoshan Valves Technical Team | 8 min read Ductile iron — also known as nodular cast iron or spheroidal graphite iron (SG iron) — is the most widely used valve body material in modern industrial piping systems. It…
Patent Info Patent Name: A New Fully Sealed Butterfly Valve Grant Publication No.: CN224315503U Application Date: July 1, 2025 Grant Date: June 2, 2026 Patent Holder: Henan Gaoshan Valve Co., Ltd. 1. Butterfly Valve Seal Failure — The Hidden Cost…
Henan Gaoshan Valves Co., Ltd. was one of more than 30 manufacturers and research institutes selected to help draft GB/T 12234-2019, “Bolted Bonnet Steel Gate Valves for Petroleum and Natural Gas Industries” — the current national standard governing gate valve…
A quiet design trend has been gaining traction in modern HVAC and district-heating pump rooms: removing the check valve from the pump discharge line and replacing it with a motorized valve electrically interlocked to the pump — opening as the…
[Introduction] To further elevate the professional competence of its sales team, strengthen business risk management capabilities, and fully accelerate high-quality growth for the second half of 2026, Henan Gaoshan Valve Co., Ltd. grandly convened its sales business promotion and training conference…
Valve color coding is one of the most misunderstood aspects of industrial piping systems. Engineers, procurement managers, and field technicians often confuse the two independent color systems that govern valve appearance — leading to costly specification errors, safety risks, and project…