Products
Pressure Sealed Bonnet Globe Valve
✧ Description
A pressure sealed bonnet globe valve is a type of globe valve that features a pressure seal design on the bonnet, which provides a reliable seal for high-pressure applications. This design is commonly used in industries where maintaining a tight seal under high pressure is essential, such as in the oil and gas, petrochemical, and power generation sectors.The pressure sealed bonnet design differs from traditional bolted bonnet configurations by using a form of metal-to-metal sealing between the bonnet and the valve body, which eliminates the need for a gasket. This sealing method enhances the valve's ability to withstand high pressures and helps prevent leakage.Pressure sealed bonnet globe valves are often used in critical applications where safety, reliability, and performance under extreme conditions are paramount. The pressure sealing design ensures that the valve can maintain its integrity and seal even when exposed to demanding pressure levels.When specifying or selecting a pressure sealed bonnet globe valve, it's important to consider factors such as the maximum pressure rating, temperature requirements, material compatibility, and specific industry standards or regulations that may apply to the intended application.If you have further questions about pressure sealed bonnet globe valves or if you need assistance with any related topics, feel free to ask for more information.
✧ Features of Pressure Sealed Bonnet Globe Valve
1. Valve body and valve cover connection form: self-pressure sealing valve cover.
2. Opening and closing parts (valve disc) design: usually use plane seal valve disc, according to customer requirements and actual working conditions need to use taper seal valve disc, sealing surface can be surfacing welding gold material or inlaid non-metal material according to user requirements.
3. Valve cover middle gasket form: self-pressure sealing metal ring.
4. Packing seal: Flexible graphite is usually used as packing material, and PTFE or composite packing material can be provided according to user needs. The surface roughness of the packing and the feeding box contact is 0.2um, which can ensure that the valve stem and the packing contact surface are closely engaged but rotate freely, and the valve stem sealing surface roughness of 0.8μm after precision machining can ensure the reliable sealing of the valve stem.
5. Spring loaded packing impact system: If required by customers, spring loaded packing impact system can be used to improve the durability and reliability of packing seals.
6. Mode of operation: under normal circumstances, hand wheel drive or gear drive mode can be used according to user needs, sprocket drive or electric drive.
7. Reverse seal design: All the globe valves provided by our company have reverse seal design, under normal circumstances, the design of the seat of the carbon steel globe valve adopts the separated reverse seal structure, and the reverse seal of the stainless steel globe valve is directly processed or processed after welding. When the valve is in the full open position, the reverse sealing surface is very reliable.
8. Valve stem design: The whole forging process is used to determine the minimum diameter according to the standard requirements.
9. Valve stem nut: Under normal circumstances, the valve stem nut material is copper alloy. Materials such as high nickel cast iron can be used according to user requirements. For high pressure and large diameter globe valves: rolling bearings are designed between the stem nut and the stem, which can effectively reduce the opening torque of the globe valve so that the valve can be easily switched on and off.
✧ Advantages of Pressure Sealed Bonnet Globe Valve
During the opening and closing process of the forged steel globe valve, because the friction between the disc and the sealing surface of the valve body is smaller than that of the gate valve, it is wear-resistant.
The opening or closing stroke of the valve stem is relatively short, and it has a very reliable cut-off function, and because the change of the valve seat port is proportional to the stroke of the valve disc, it is very suitable for the adjustment of the flow rate. Therefore, this type of valve is very suitable for cut-off or regulation and throttling.
✧ Parameters of Pressure Sealed Bonnet Globe Valve
| Product | Pressure Sealed Bonnet Globe Valve |
| Nominal diameter | NPS 2”, 3”, 4”, 6”, 8” , 10” , 12” , 14”, 16”, 18”, 20” 24”, 28”, 32”, 36”, 40”, 48” |
| Nominal diameter | Class 150, 300, 600, 900, 1500, 2500. |
| End Connection | Flanged (RF, RTJ, FF), Welded. |
| Operation | Handle Wheel, Pneumatic Actuator, Electric Actuator, Bare Stem |
| Materials | A216 WCB, WC6, WC9, A352 LCB, A351 CF8, CF8M, CF3, CF3M, A995 4A, A995 5A, A995 6A, Alloy 20, Monel, Inconel, Hastelloy, Aluminum Bronze and other special alloy. |
| A105, LF2, F5, F11, F22, A182 F304 (L), F316 (L), F347, F321, F51, Alloy 20, Monel, Inconel, Hastelloy | |
| Structure | Outside Screw & Yoke (OS&Y)，Pressure Seal Bonnet |
| Design and Manufacturer | API 600, API 603, ASME B16.34 |
| Face to Face | ASME B16.10 |
| End Connection | ASME B16.5 (RF & RTJ) |
| ASME B16.25 (BW) | |
| Test and Inspection | API 598 |
| Other | NACE MR-0175, NACE MR-0103, ISO 15848, API624 |
| Also available per | PT, UT, RT,MT. |
✧ After Sale Service
As a professional forged steel valve manufacturer and exporter, we promise to provide customers with high-quality after-sales service, including the following:
1.Provide product usage guidance and maintenance suggestions.
2.For failures caused by product quality problems, we promise to provide technical support and troubleshooting within the shortest possible time.
3.Except for damage caused by normal use, we provide free repair and replacement services.
4.We promise to respond quickly to customer service needs during the product warranty period.
5. We provide long-term technical support, online consulting and training services. Our goal is to provide customers with the best service experience and make customers' experience more pleasant and easy.
