Import Cast Steel Bolted Bonnet Type Gate Valve — Buy in Bulk from Supplier in China

The Cast Steel Bolted Bonnet Type Gate Valve from Glofa Valve is designed for full-open or full-closed operation in pipeline systems where minimal pressure drop is critical. When fully open, the flow path is straight-through, reducing turbulence and energy loss. The valve is not intended for throttling or frequent cycling, aligning with API 6D and API 600 standards for isolation applications. Its wedged gate design ensures tight sealing even under low differential pressure, with the seating surfaces contacting for less than 5% of total travel to reduce seat wear.

The valve body is constructed from cast steel, with a bolted bonnet for ease of maintenance and inspection. The middle shaft sealing meets USA VOC leakage requirements, and leakage rates are controlled below the limits defined in API 6D and API 600. The grooved wedge is guided by the valve body to maintain consistent alignment, minimizing seat damage and ensuring repeatable sealing performance. This construction is typical for industrial gate valves used in oil, gas, and water systems where integrity under pressure is non-negotiable.

Buyers in the oil and gas, petrochemical, and water treatment sectors commonly specify this valve type for mainline isolation. It is supplied in standard sizes matching ANSI Class 150 to 600 equivalents, with pressure ratings up to PN-25. Packaging is typically wooden crate with internal foam padding, and lead time is confirmed per order. Minimum order quantities are not stated and must be verified directly with the supplier.

Glofa Valve is a manufacturer based in China with a harbor-tier trust rating and no recorded response rate or average response time in the listing. The supplier provides gate valves with documented compliance to API 6D and API 600, and claims successful passage of the USA VOC leakage test for shaft sealing. No information is provided about company history, workforce size, export volume, or client list. The listing confirms only technical capabilities, not operational scale.

The supplier does not claim ISO certification, years in operation, or third-party audits. Its presence is limited to product-specific claims around leakage performance and sealing design. Buyers should treat this as a product-focused manufacturer without verified corporate background data. Verification of production capacity, quality control processes, or export experience must be requested directly.