Focet Valves Private Limited

We are engaged in offering a wide range of 12 - Double Window Sight Glass Valve to our clients. Our range of all products is widely appreciated by our clients.

A double window sight glass (also called a double-window sight flow indicator) is commonly used in pipelines to visually inspect fluid flow, color, clarity, or level. Below is a general technical specification template you can use for procurement, engineering documentation, or comparison.

🔧 Double Window Sight Glass – Typical Specification 1️⃣ Type

• Type: Double Window (Opposed Window)

• Design: Bolted construction with two transparent viewing discs

• Mounting: Flanged / Threaded / Weld-in (as required)

• Service: Liquid / Gas / Steam (specify application)

A resilient seated gate valve is a, commonly, ductile iron isolation valve featuring an EPDM or NBR rubber-encapsulated wedge (gate) that ensures a drop-tight, bubble-tight seal. Ideal for waterworks and wastewater, its design prevents sediment buildup, provides corrosion resistance, and allows for smooth operation, with nearly 50% less weight than conventional metal-seated

Stainless Steel (SS) Needle Valves – Description

A stainless steel needle valve is a type of precision valve used to control flow rate very accurately in pipelines. It gets its name from the needle-shaped plunger (a long, tapered point) that fits into a matching seat.

🔧 Key Features

• High precision control: Allows very fine adjustment of flow (ideal for low flow rates).

• Leak-tight sealing: The needle tip ensures tight shut-off.

• Durability: Made from stainless steel (like SS304 or SS316), offering excellent resistance to corrosion, pressure, and temperature.

• Smooth operation: Gradual opening/closing reduces sudden pressure changes.

⚙️ Working Principle

When you turn the handle:

• The needle (plunger) moves up or down.

• As it moves down, it blocks the flow path gradually.

• As it moves up, it opens the passage slowly, allowing controlled flow.

🏭 Common Applications

• Instrumentation systems

• Chemical and petrochemical industries

• Oil & gas pipelines

• Hydraulic systems

• Laboratory equipment

• Pressure gauges and flow meters

📊 Advantages

• Precise flow regulation

• Strong and corrosion-resistant

• Suitable for high-pressure systems

• Long service life

⚠️ Limitations

• Not suitable for quick shut-off

• Slower operation compared to ball valves

• Can be damaged if overtightened

🔩 Types (based on design)

• Straight type needle valve

• Angle type needle valve

• Panel mounting needle valve

• High-pressure needle valve

A pneumatic operated butterfly valve uses compressed air to power an actuator that rotates a disc to control the flow of liquids, gases, or slurries in a pipeline. These valves are valued for their quick operation, compact design, and reliability in automated industrial processes