Product description：
Microfiber braided string
The fluctuation of the price is influenced by various factors such as specifications, material cost, and exchange rate. To stay up-to-date with the latest pricing information, kindly share your contact details with me. I will make sure that you receive the most recent price updates.
This is an ANSI Gate Valve with flanged ends that features a rising stem and an OS&Y design. It's an excellent choice for industrial applications and is similar to the original content listed above.
The Outside Stem Type Gate Valve is specifically designed to provide a clear visual indication of whether the valve is open or closed. This makes it perfect for use in applications such as fire sprinkler systems, where it is crucial to easily identify the valve's position. The key feature of this shut-off OS&Y gate valve is its resilient wedge gate valve, which is equipped with durable stainless steel internals and stem. Additionally, the valve boasts an outside stem and yoke configuration, further enhancing its performance and reliability. It is evident that this valve is tailored to meet the unique requirements of fire sprinkler systems and other similar applications, ensuring optimal safety and efficient operation.
We offer a comprehensive service for our Outside Stem Type Gate Valve, catering beautifully to your custom requirements. Our gate valves come in a range of durable materials such as carbon steel and stainless steel to suit your needs perfectly. Moreover, you can have your rising stem gate valve configured in either solid wedge or flexible wedge design, and our gate valves can be made of specifically customized materials such as bronze, stellite, stainless steel and other exclusive alloys. With our full capacity, we provide you with a one-stop solution for all your gate valve needs.
Key Benefits:
Sizes available in 1/2”- 12”
Working Temperature: -20℃- 797°F
Working Pressure: Class 150#/Class 300#
Rising stem, OS&Y gate valve
Body: ASTM A351 CF8M/CF8, WCB
Disc: ASTM A351 CF8M/CF8, WCB/STL+13
Stem: SS316/304, 20Cr13
Gland Packing: PTFE or 304+GRAPHITE
Design Standard: ASME B16.34/API600/API603
Flange Dimension: ASME B16.5
Face to face: ASME B16.10
Testing Standard: ASME B16.34/API600/API603
The design known as outside-screw-and-yoke (OS&Y) is specifically engineered to prevent thread wetting, primarily due to its stem being positioned outside the valve. A yoke is incorporated into the design, consisting of two upward-extending arms emerging from the bonnet and converging to create a housing for the yoke nut (also referred to as stem nut, yoke bushing, or stem bushing). Unlike other stem designs, the hand wheel is affixed to the yoke nut as opposed to the stem. The yoke nut enjoys rotational freedom but remains secured at the top of the yoke by a yoke-nut retainer, which doubles as a bushing for the nut. The yoke nut possesses a left-hand internal thread that matches with the thread on the stem. To close the valve, the stem thread is deliberately left-handed, meaning turning the hand wheel in a clockwise direction results in the downward movement of the stem. This design ensures that the stem remains stationary and can even be pinned to the gate, effortlessly revealing the position of the gate within the valve simply by observing the top of the stem. The OS&Y design is universally employed in all sizes of cast iron and steel gate valves.
The stem design of valves features a deformable non-metallic packing that prevents any external leakage along the stem. This packing is situated inside the packing chamber or stuffin box, which is circular in shape and located in the bonnet. In ISRS and NRS stem designs, the packing is secured in place by a hollow packing nut and a tubular gland that thread onto the top of the bonnet.
However, in the OS&Y stem design, the packing arrangement is more intricate and involves a gland that is held in place by a gland flange. The gland flange is further restrained by a pair of gland bolts and nuts, which are fastened to the bonnet using eyes and pins or a similar arrangement. These measures ensure that the packing remains securely in place, preventing any leakage along the stem.
Hot Tags: outside stem type gate valve, China outside stem type gate valve manufacturers, suppliers, factory
