巴基斯坦采购需求：蝶阀、半球阀、膨胀节、球形止回阀、止回阀阀瓣、止回阀挡板

I am seeking suppliers for several valves required for a PN8 HDPE pipeline project. Specifically, I need triple action air valves in various sizes, a washout valve (gate valves may suffice), and a line valve, preferably butterfly type. The dimensions I need for these products are significant, and I'm interested in options that can provide reliable performance under the specified conditions. If your factory offers these types of valves, I'd love to hear more about your available options. Please provide details regarding pricing, lead times, and any certifications your products have. I am eager to establish a strong working relationship with a dependable supplier who can meet our project requirements efficiently.