Introduction

Cast Steel Bellow Seal Globe Valve features a wave-shaped bellow seal for zero external leakage. It ensures safe and reliable flow control in high-pressure, high-temperature, or corrosive systems.

Key Features

Wide Temperature Range

Operates reliably from -29°C to 210°C, suitable for standard industrial systems.

Zero External Leakage

Bellow seal isolates the stem from media, ensuring no leakage even under toxic, flammable, or corrosive conditions.

Easy Maintenance

Modular bellow and seat allow quick replacement, lowering downtime.

Technical Specifications

Design Standard	BS1873,API602, DIN3356
Design Standard for the bellows	MSS SP117
Face to Face	ASME B16.10, DIN3202
Flange Connection Standard	ASME B16.5, DIN2543-2545
BW Standard	ASME B16.25
Temperature	ASME B16.34
Test and Inspection	API598, DIN3230
Available Materials	Carbon Steel, Stainless Steel, Alloy Steel, Duplex Stainless Steel

Customization Services

Material Options-ASTM A216 WCB, A352, or CF8/CF8M stainless steel for process compatibility.

Connection Types-Flanged or butt-weld ends for pipeline integration.

Disc and Seat-Metal or soft seats for durability and tight sealing.

Bellow Design-Custom bellow length and material for zero external leakage.

Valve Size-NPS1/2–10" (DN15–250mm) to fit different pipelines.

Testing and Inspection-API598 standard or customized checks to meet project requirements.

Applications

Oil and Gas-Used in pipelines for reliable shutoff of crude oil, natural gas, and refined products.

Power Generation-Regulates steam and cooling water in boilers and turbine systems.

Petrochemical Industry-Manages high-pressure, high-temperature fluids in refineries and storage units.

Pharmaceutical Production-Ensures precise flow control with zero leakage in clean systems.

Industrial Water Treatment-Controls high-pressure water lines in municipal and industrial facilities.

FAQ

Q: What standards does the valve comply with?

A: API602, ASME B16.34, ASME B16.5, and API598 testing standards.

Q: How is leakage prevented under high temperature?

A: The bellow seal compensates for thermal expansion, maintaining a tight seal.

Q: How is valve torque during operation?

A: Designed for manageable torque, compatible with manual and actuator operation.

Q: Can the valve handle thermal cycling?

A: Yes, bellow seal compensates for expansion and contraction, preventing leakage under repeated temperature changes.

Q: What type of flange standards are available?

A: ASME B16.5, DIN, JIS flanges can be supplied according to project requirements.

Q: Can the valve be used in vacuum applications?

A: Yes, bellow seal design can maintain sealing under moderate vacuum conditions.

Q: Is the valve suitable for offshore or corrosive environments?

A: Yes, stainless steel versions and special coatings can resist corrosion in harsh conditions.

Q: Are pressure tests performed before shipment?

A: Yes, API598 or equivalent hydrostatic and pneumatic tests are performed for every valve.

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Cast Steel Bellow Seal Globe Valve

Introduction

Key Features

Technical Specifications

Customization Services

Applications

FAQ

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