Each sector has its own unique problems. We start there.

01

Fugitive emission leaks at the wellhead and manifold, sour media (H₂S) that erode standard materials, and zero-leakage demands on export lines.

Ball Valve • Forged Steel Valve • Cryogenic Valve

API 6D ball valve with primary-secondary seal, ISO compliant material for sour service, and forged steel valve for small-bore high-pressure applications. Each unit is equipped with a fugitive emission test to ISO.

Typical Problems

02

Extreme thermal cycles and high temperatures cause valve seats to deform, seize, and leak internally, which reduces unit yield.

Refining & Petrochemicals

Kaiwei Solutions

Gate Valve • Globe Valve • Control Valve • Check Valve

API 600/BS 1873 gate, globe, and check valves with WC6/WC9 material for high temperatures, plus control valves with anti-cavitation trim that are resized to suit actual operating conditions.

Typical Problems

03

Corrosive and abrasive media shorten valve lifespan by months — premature replacement eats into maintenance budgets and triggers unplanned shutdowns.

Chemical Industry

Kaiwei Solutions

Butterfly Valve • Ball Valve • Globe Valve

Material selection is based on media analysis: duplex, super duplex, and alloy for the most aggressive locations, and high-quality butterfly valves for utility lines. We assist with audits of critical locations before making recommendations.

04

High-pressure steam and feedwater services demand repeated tight shut-offs; seat failure means loss of cycle efficiency and safety risks.

Gate Valve • Globe Valve • Control Valve • Forged Steel Valve

Class 600–2500 gate and globe valves with pressure-seal bonnets, feedwater control valves with precise linear/equal-percentage characteristics, and on-site commissioning support.

Typical Problems

05

Long Distance Pipeline (Transmission)

Pipelines hundreds of kilometers long require completely tight, piggable block isolation — one leaky valve at a station means a drop in delivery pressure and a potential incident.

Kaiwei Solutions

Trunnion mounted ball valve full bore API 6D with double block & bleed, seat injection fitting for in-line maintenance, and axial/dual plate check valve for compressor and pump protection.

Ball Valve • Check Valve • Gate Valve