DN80-PN40-RF Soft Seated Globe Valve

Technical Data Sheet

Product: DN80 – PN40 Flanged Soft Seated Globe Valve

1. Product Description

This flanged globe valve features a soft‑seated design, providing excellent shut‑off performance with minimal leakage. The globe valve configuration offers precise flow regulation and reliable on‑off control. The soft seat ensures bubble‑tight sealing, making it ideal for applications where leakage integrity is critical. Constructed with a rising stem and handwheel operator, this valve is suitable for a wide range of industrial services including water, oil, gas, steam, and mild corrosive media.

2. Main Technical Parameters

3. Bill of Materials (Typical)

4. Hauptmerkmale

1. Soft Seat Design

• PTFE or reinforced PTFE seat insert provides bubble‑tight shut‑off (zero leakage).
• Low friction between disc and seat reduces operating torque and extends service life.

• Excellent throttling and flow regulation capabilities.
• Suitable for frequent operation and precise control.

• Stem threads are isolated from the media, reducing corrosion and wear.
• Visual indication of valve position (open/closed).

• Easy maintenance and access to internal components.
• Reliable sealing with spiral wound gasket.

• Bellows seal for zero stem leakage.
• Gear operator for larger sizes or higher pressures.
• Pneumatic or electric actuation for automated control.

5. Dimensions & Weight (Reference)

Values are typical for EN 1092‑1 PN40 RF flanges. Final dimensions to be confirmed from certified GA drawings.

6. Design & Manufacturing Standards

Testing:

• Shell strength test: 1.5 × rated pressure
• High‑pressure seat test: 1.1 × rated pressure
• Low‑pressure seat test: 0.6 MPa (bubble‑tight for soft seat)

7. Installation Considerations

1. Flow Direction

• Globe valves are typically installed with flow entering below the disc (flow‑to‑open or flow‑to‑close) depending on design.
• Flow direction arrow on the body must be followed to ensure proper sealing and performance.

• Can be installed in horizontal or vertical pipelines with the stem upright.
• Avoid installation with stem inverted to prevent debris accumulation.

• Soft seat inserts can be replaced without removing the valve from the pipeline (with bolted bonnet design).

8. Optional Features

9. Ordering Information

Please specify the following when placing an order:

1. Size, pressure rating, and end connection
2. Media and operating temperature — determines seat and packing materials
3. Body and trim materials — carbon steel, stainless steel, etc.
4. Seat type — PTFE soft seat (standard) or metal seat (optional)
5. Stem type — rising stem (OS&Y) or non‑rising stem
6. Flange standard — EN 1092‑1 / ASME B16.5
7. Actuation type — handwheel, gear, pneumatic, electric
8. Special requirements — bellows seal, NACE, low emission, material test reports (EN 10204 3.1), etc.

GARANTIE:

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