DN25-PN25-SW Top Entry Floating Ball Valve A

Nominal Size DN 25 (1″ NPS)
Pressure Rating PN 25 (Class 150)
Design Pressure Up to 25 bar at specified temperature
Temperature Range Standard: -29°C to +200°C with PTFE seats. Extended range available with special trim.
Flow Characteristic Full Port (FP) for minimum pressure drop.
End Connections Socket Weld x Socket Weld
Operation Manual Lever (Standard). Gear, Pneumatic, or Electric Actuation optional.
Seat Leakage Class ANSI/FCI 70-2 Class VI (Standard Soft Seat). Class IV (Metal Seat) optiona

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DN25-PN25-SW Top Entry Floating Ball Valve A

TECHNICAL DATA SHEET

PRODUCT: Top Entry Floating Ball Valve
MODEL / REFERENCE: DN25-PN25-SW
TYPE: One-Piece Body, Full Port, Side-Entry (Top Entry Maintenance)

1.0 PRODUCT DESCRIPTION & APPLICATION
A robust, single-piece body ball valve designed for superior structural integrity in demanding applications. Its unique Top Entry design allows for all internal components (ball, seats, stem) to be serviced or replaced in-line through the top-mounted bonnet, without the need to remove the valve from the pipeline. This eliminates downtime associated with pipe cutting and realignment. Featuring Socket Weld (SW) ends, it ensures a permanent, leak-proof connection ideal for high-vibration or critical services. Commonly used in chemical processing, oil & gas production, LNG, and high-pressure utility systems where reliability and in-line maintenance are key.

2.0 DESIGN & STANDARDS

Design & Pressure Rating: ASME B16.34, PN25 (Class 150)
연결 종료: Socket Weld (SW) per ASME B16.11
대면: Per manufacturer’s standard or relevant industry norms
Fire Safe Design: API 607 / ISO 10497 (Optional)
Anti-Static Device: Per API 608 / ISO 17292 (Standard)
Blow-Out Proof Stem: Per API 608 (Standard)
좌석 디자인: Spring-loaded or pressure-energized for bi-directional or unidirectional sealing.

3.0 GENERAL SPECIFICATIONS

매개변수	사양
공칭 크기	DN 25 (1″ NPS)
압력 등급	PN 25 (Class 150)
Design Pressure	Up to 25 bar at specified temperature
온도 범위	Standard: -29°C to +200°C with PTFE seats. Extended range available with special trim.
Flow Characteristic	Full Port (FP) for minimum pressure drop.
End Connections	Socket Weld x Socket Weld
작업	Manual Lever (Standard). Gear, Pneumatic, or Electric Actuation optional.
Seat Leakage Class	ANSI/FCI 70-2 Class VI (Standard Soft Seat). Class IV (Metal Seat) optional.

4.0 PRESSURE-TEMPERATURE RATINGS

Pressure-temperature ratings conform to ASME B16.34 for Class 150/Pressure Nominal 25.
The maximum allowable pressure is dependent on the selected body/trim materials and operating temperature. Consult detailed P-T chart.

5.0 MATERIALS OF CONSTRUCTION (STANDARD)

요소	Material Specification
Valve Body	ASTM A182 F316 / A351 CF8M (316 SS) – 기준 Common Options: F304/CF8, F316L/CF3M, WCB Carbon Steel, Duplex Stainless Steel (S31803/F51).
공	316 SS, Hard Chrome Plated or Electroless Nickel Plated for enhanced wear/corrosion resistance.
줄기	316 SS (Forged). Optional: 17-4PH SS for higher strength.
Seats (Primary)	Reinforced PTFE (RPTFE), PEEK, or Nylon for higher performance.
Stem Seals / Packing	Flexible Graphite Rings (High-temp) or PTFE V-Rings.
Body-Bonnet Gasket	Spiral Wound Graphite/SS or RTJ Ring (Metal)
Bolting (Bonnet)	ASTM A193 B8M (316 SS)
Actuator Mounting	ISO 5211 Direct Mounting Pad (Standard)

6.0 KEY DESIGN FEATURES

Top Entry Design: Enables all internal maintenance in-line, significantly reducing downtime and maintenance costs. The one-piece body offers superior structural strength and minimizes potential leak paths compared to multi-piece designs.
Socket Weld Ends: Provide a robust, permanent, and high-integrity connection suitable for high-pressure and high-vibration services.
Bi-Directional Sealing: Spring-loaded seats often provide reliable sealing in both flow directions.
Blow-Out Proof, Anti-Static Stem: Standard safety features for hazardous services.
ISO 5211 Mounting Pad: Facilitates easy and direct mounting of pneumatic/electric actuators.

7.0 TESTING & INSPECTION

Shell Pressure Test: Per API 598 / ISO 5208 at 1.5 x PN (38 bar).
좌석 누출 테스트: Per API 598 at 1.1 x PN (27.5 bar) with air or water.
High-Pressure Gas Test (Optional): For critical service verification.
Material Verification: PMI (Positive Material Identification) on critical components upon request.
Documentation: Certificate of Compliance (COC) with test records. Mill Test Certificates (MTC 3.1) available.

8.0 INSTALLATION & MAINTENANCE NOTES

Weld Procedure: The valve MUST be in the fully open position during socket welding to prevent heat damage to internal seals.
Follow proper socket weld preparation and technique as per ASME B31.3.
For maintenance, isolate and depressurize the valve. Loosening the bonnet bolts allows access to all internals from above.

9.0 OPTIONS & ACCESSORIES

작동: Pneumatic (Double-Acting, Spring-Return), Electric, Hydraulic.
Gear Operator for high-torque applications.
Locking Device for handle/lever.
Stem Extension for insulated lines.
Cryogenic or High-Temperature Extended Bonnet.
Fire-Safe Seats & Seals (certified to API 607).
Drain / Vent Ports on valve body.
Special Coatings (Internal Epoxy, Xylan, etc.).

보증:

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