巴西采购需求：特殊井口装置、浮球阀、蝶阀、真空闸阀、旋启式止回阀、铸钢截止阀

We recently installed a choke valve at one of our facilities, but we're encountering some challenges in ensuring the valve's tightness post-installation. To help us address this issue, we would appreciate it if you could provide the installation manual or any relevant guidelines pertaining to this valve type. Additionally, any extra documentation or best practices you could share would be extremely helpful in our efforts to resolve these concerns efficiently. Your support in this matter will assist us greatly in ensuring optimal performance and safety. Thank you!