Body and connections
Body exterior and connection details
Globe Valves
Bellows-Sealed Globe Valve
Bellows-Sealed Globe Valve supports pipeline isolation and throttling where the configuration suits the duty. Selection focuses on the sealing arrangement, fluid conditions, piping interfaces and operating requirements.
- Nominal size
- DN15-DN300
- Pressure rating
- PN10-PN64
- Service temperature
- -29 to 350 °C
- Model
- WJ41H
Configuration and suitability depend on the specific model documentation.
Product overview
Bellows-Sealed Globe Valve
Service conditions
A globe valve opens or closes its flow path through linear movement of a disc relative to the seat. Disc travel changes the opening at the seat. Throttling duty calls for suitable disc geometry and an assessment of flow demand, differential pressure and the pressure loss caused by changes in flow direction.
A bellows seal separates the process fluid from the external stem-sealing region and extends or compresses with stem movement. Many designs also include packing. Bellows material, permissible travel and cycling duty should be assessed with differential pressure, temperature changes and corrosion exposure.
Construction and description
Match the operator to the valve load and site operating method. Manual operation needs accessible clearance. Frequent cycling or remote control also calls for assessment of output capability, duty and position feedback.
Define fluid composition and continuous and start-stop operating conditions, then assess body, internals and seals as a combination. Particles, deposits and cleaning affect sealing surfaces and mechanisms; plan maintenance for the actual service.
Product details
Operating mechanism
Operating mechanism and mounting details
Related products
Technical specifications
- Model
- WJ41H
- Nominal size
- DN15-DN300
- Pressure rating
- PN10-PN64
- Service temperature
- -29 to 350 °C
- Body material
- Cast carbon steel (WCB); Austenitic cast stainless steel (CF8); Molybdenum-bearing austenitic cast stainless steel (CF8M); Low-carbon austenitic cast stainless steel (CF3); Low-carbon molybdenum-bearing austenitic cast stainless steel (CF3M)
- Operation
- Manual, electric, pneumatic
Features & benefits
Explore the product structure and configuration.
Structure depends on the model. Select the image to enlarge.
01Operating principle
A globe valve opens or closes its flow path through linear movement of a disc relative to the seat. Disc travel changes the opening at the seat. Throttling duty calls for suitable disc geometry and an assessment of flow demand, differential pressure and the pressure loss caused by changes in flow direction.
02Design and selection
A bellows seal separates the process fluid from the external stem-sealing region and extends or compresses with stem movement. Many designs also include packing. Bellows material, permissible travel and cycling duty should be assessed with differential pressure, temperature changes and corrosion exposure.
03Operation and control
Match the operator to the valve load and site operating method. Manual operation needs accessible clearance. Frequent cycling or remote control also calls for assessment of output capability, duty and position feedback.
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Industry applications
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