Bellow Seal Globe Valve Manufacturer in Saudi Arabia

Bellow Seal Globe Valve Manufacturer in Saudi Arabia

A Bellow Seal Globe Valve is a type of globe valve specially designed to prevent leakage by using a metallic bellows as a dynamic seal between the valve body and the stem. This makes it ideal for hazardous, toxic, flammable, or high-purity fluid applications.

🔧 Bellow Seal Globe Valve – Complete Guide

A Bellow Seal Globe Valve is a type of globe valve specially designed to prevent leakage by using a metallic bellows as a dynamic seal between the valve body and the stem. This makes it ideal for hazardous, toxic, flammable, or high-purity fluid applications.

🧪 What Is a Bellow Seal Globe Valve?

Unlike standard globe valves that use packing glands (which can wear out over time and cause leakage), bellow seal valves use a convoluted bellows welded to both the stem and the bonnet. This design ensures a leak-tight seal around the moving stem, even under high pressure or temperature cycles.

🔧 Key Components

Part Description
Bellows Multi-ply stainless steel or Inconel; expands/contracts with stem movement
Stem Moves the disc up/down to control flow
Disc & Seat Standard globe valve shut-off mechanism
Bonnet Contains the bellows and provides additional packing for double sealing
Backup Packing Often included as a secondary seal (for safety redundancy)

✅ Main Features

  • Zero Stem Leakage – Ideal for toxic or flammable media

  • Long Lifespan – Designed for 10,000+ cycles

  • Double Sealing – Bellows + backup gland packing

  • Environmentally Friendly – No fugitive emissions

  • Safety Compliant – Often meets API 624, ISO 15848, or TA-Luft emission standards

🧰 Typical Applications

  • 🛢️ Petrochemical and refineries

  • ☣️ Toxic and hazardous fluid pipelines

  • 🧪 Pharmaceuticals and fine chemicals

  • 🌡️ Steam and thermal oil systems

  • 🌍 Nuclear and high-purity gas systems

🧾 Technical Specifications

Parameter Range / Option
Size ½” to 24″
Pressure Rating Class 150 – 2500
Temperature -196°C to 600°C (depending on bellows material)
Body Material WCB, WC6, CF8, CF8M, C22, Hastelloy
Bellows Material SS316L, Inconel 625, Hastelloy C276
End Connections Flanged, Socket Weld, Butt Weld
Design Standards API 623, BS 1873, ASME B16.34

🟢 Advantages

  • 🔒 No stem leakage – Ensures maximum safety

  • 🔁 Extended cycle life – Reduces maintenance frequency

  • 🌱 Environmentally safe – Prevents harmful emissions

  • 🔄 Suitable for modulating and isolation service

  • 🧰 Double-sealing for added reliability

🔴 Disadvantages

  • 💰 Higher cost compared to standard globe valves

  • ⚙️ Slightly complex to manufacture and maintain

  • 🧱 Larger size due to bellows assembly

🏭 Top Manufacturers in Saudi Arabia & Internationally

🇸🇦 Saudi Arabia:

  • QASWA VALVE

  • PHARMACH VALVE

🌍 International:

  • QASWA VALVE

  • PHARMACH VALVE

🌐 Product  Listings

  • “Bellow seal globe valve Saudi Arabia”

  • “Zero leakage control valve supplier”

  • “API 623 globe valve manufacturer”

  • “Fugitive emission compliant valves KSA”

  • “Cast steel bellow seal valve for steam”

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