1 PC Flanged Ball Valves

Product Overview

The SIYelectric 1 Piece Flanged Ball Valve is a compact quarter-turn shut-off valve designed for reliable flow control in industrial piping systems. It features a single-piece valve body with flanged ends, allowing easy installation, removal, inspection, and replacement in pipelines.

Inside the valve, a precision-machined ball with a central bore controls the flow. When the bore is aligned with the pipeline, the medium flows through the valve. When the handle is rotated 90 degrees, the ball turns to the closed position and stops the flow.

This type of flanged ball valve is widely used in water treatment, chemical processing, oil and gas, HVAC, industrial utilities, and general process pipelines where reliable shut-off, simple operation, and convenient maintenance are required.

Product Description

The 1 PC flanged ball valve uses an integrated one-piece body structure, which provides a compact design and reduces potential leakage points compared with multi-piece valve structures. The flanged connection makes the valve suitable for direct installation between pipeline flanges, especially in systems where the valve may need to be removed for maintenance or replacement.

With full port design, the valve provides a large flow passage and helps reduce pressure loss across the pipeline. The stainless steel body options, including CF8 / SS304 and CF8M / SS316, allow the valve to be selected according to the process medium, corrosion requirement, temperature, and working environment.

SIYelectric 1 piece flanged ball valves can be supplied according to common flange standards such as ASME B16.5 and DIN 2501, making them suitable for international industrial projects and replacement applications.

Key Features

One-Piece Valve Body

The one-piece body design provides a compact and robust structure. It helps reduce external leakage risk and is suitable for general industrial shut-off applications.

Flanged End Connection

The flanged connection allows convenient installation and removal from the pipeline. It is especially useful for larger pipelines, process systems, and applications where maintenance access is important.

Full Port Design

The full port structure provides a larger internal flow area, helping reduce pressure drop and maintain stable flow capacity in the pipeline.

Quarter-Turn Operation

The valve opens and closes with a simple 90-degree handle rotation, allowing fast and clear on/off control.

Stainless Steel Material Options

Available in CF8 / SS304 and CF8M / SS316. SS316 is more suitable for applications requiring better corrosion resistance, especially in chemical, coastal, or more demanding process environments.

Lockable Handle Option

A locking device handle can be selected to prevent accidental operation and improve site safety.

ISO 5211 Mounting Pad Option

An optional ISO 5211 mounting pad allows the valve to be equipped with pneumatic actuators, electric actuators, or other automation devices for remote control applications.

Technical Specifications

Applications

Water Treatment Systems

Used in filtration systems, pumping stations, treatment units, distribution pipelines, and utility water systems where reliable shut-off and flow isolation are required.

Chemical Processing

Suitable for compatible chemicals, solvents, additives, and process fluids. For corrosive media, CF8M / SS316 material is recommended after confirming medium compatibility.

Oil and Gas Industry

Applied in auxiliary process pipelines, fuel systems, utility lines, storage systems, and low to medium pressure fluid control applications.

Industrial Process Pipelines

Used in general manufacturing plants, process skids, production lines, and equipment piping systems where fast shut-off and easy maintenance are required.

HVAC and Building Services

Suitable for chilled water, hot water, cooling water, and other HVAC-related fluid systems requiring durable flanged shut-off valves.

Food, Beverage, and Pharmaceutical Auxiliary Lines

Can be used in compatible utility lines, cleaning systems, water lines, and non-critical auxiliary fluid systems. For direct sanitary process contact, sanitary valve structure and surface finish requirements should be confirmed separately.

Advantages

• Compact one-piece body reduces leakage points and saves installation space.
• Flanged connection supports easy installation, removal, and maintenance.
• Full port design helps maintain flow capacity and reduce pressure loss.
• Quarter-turn operation provides fast and simple open/close control.
• Stainless steel construction offers good corrosion resistance and durability.
• Available in SS304 and SS316 for different media and working conditions.
• Lockable handle option improves operating safety.
• ISO 5211 mounting pad option supports future automation with pneumatic or electric actuators.
• Suitable for international projects with ASME B16.5 and DIN 2501 flange options.
• Tested according to API 598 and EN 12266-1 for sealing and valve performance verification.

Selection Notes

When selecting a 1 piece flanged ball valve, the following factors should be confirmed:

1. Pipeline size
   Confirm the required nominal size, such as DN15, DN25, DN50, DN80, or DN100.
2. Flange standard
   Confirm whether the project requires ASME B16.5, DIN 2501, or another flange standard.
3. Material compatibility
   Choose SS304 for general water, air, oil, and mild media. Choose SS316 for more corrosive or chemical applications.
4. Working pressure and temperature
   Confirm that the valve pressure rating and temperature range match the actual process conditions.
5. Manual or automated operation
   For remote control or automatic control systems, choose the ISO 5211 mounting pad option.
6. Handle safety requirement
   For sites where accidental operation must be avoided, a locking handle is recommended.