DN50-PN25 F316L Bellow Seal Globe Valve

Size (Nominal) DN 50 (2″ NPS)
Pressure Rating PN 25 (Class 150)
Design Pressure Up to 25 bar @ specified temperature
Design Temperature -29°C to +200°C (-20°F to +392°F) (Standard). Extended range available.
Flow Direction Flow Under Plug (Standard) / Flow Over Plug
Operation Manual Handwheel (Standard). Gear, Pneumatic, or Electric Actuation optional.
Leakage Class Seat: ANSI/FCI 70-2 Class IV (Metal Seat) or Class VI (Soft Seat if applicable). Bellow: Zero external.

문의하기

TECHNICAL DATA SHEET

PRODUCT: Bellow Seal Globe Valve
MODEL / REFERENCE: DN50-PN25 F316L
TYPE: Bolted Bonnet, Outside Screw & Yoke (OS&Y), Bellow Sealed

1.0 PRODUCT DESCRIPTION & APPLICATION
A bellow seal globe valve designed for reliable isolation in applications requiring zero external leakage of hazardous, toxic, expensive, or environmentally sensitive fluids. The hermetically sealed bellow assembly protects the stem sealing area, eliminating fugitive emissions and ensuring long-term stem seal integrity. The F316L body material provides excellent corrosion resistance in a wide range of chemical and high-purity services. Suitable for chemical processing, pharmaceutical, petrochemical, LNG, and refining industries.

2.0 DESIGN & STANDARDS

Design: Globe, Angle, or Oblique Pattern (as specified)
Connection Ends: RF Raised Face Flange per ASME B16.5
대면: ASME B16.10
Flange Dimensions: ASME B16.5
Fire Safe Design: API 607 / API 6FA (if applicable)
Fugitive Emissions: Compliant with TA-Luft, ISO 15848-1 (specify class), or SHELL MESC SPE 77/312 (as specified)

3.0 GENERAL SPECIFICATIONS

매개변수	사양
Size (Nominal)	DN 50 (2″ NPS)
압력 등급	PN 25 (Class 150)
Design Pressure	Up to 25 bar @ specified temperature
Design Temperature	-29°C to +200°C (-20°F to +392°F) (Standard). Extended range available.
Flow Direction	Flow Under Plug (Standard) / Flow Over Plug
작업	Manual Handwheel (Standard). Gear, Pneumatic, or Electric Actuation optional.
누설 등급	Seat: ANSI/FCI 70-2 Class IV (Metal Seat) or Class VI (Soft Seat if applicable). Bellow: Zero external.

4.0 PRESSURE-TEMPERATURE RATINGS

Body & Bonnet: Per ASME B16.34 for Class 150.
Bellow: Designed for full pressure differential across the closed valve and cyclic life suitable for the application.

5.0 MATERIALS OF CONSTRUCTION

요소	Material Specification
Valve Body & Bonnet	ASTM A351 CF3M / A182 F316L (Low Carbon Stainless Steel)
Trim (Standard)	316 Stainless Steel
Trim (Optional)	Hardened 316, Stellite, Alloy 20, Hastelloy C
Seat & Disc	316L / 316 + Stellite faced (Standard)
줄기	316 Stainless Steel (Hardened optional)
Gasket	Spiral Wound Graphite (SS316/Graphite)
Bolting	ASTM A193 B8M (316 SS)
Bellows	Hydraulically formed, Multi-ply (typically 4-6 plies), 316L SS
Packing	Secondary graphite packing as backup
Handwheel	Carbon Steel painted or SS

6.0 BELLOWS ASSEMBLY (KEY FEATURE)

유형: Welded, Multi-ply.
Material: 316L Stainless Steel.
Design Life: Minimum [e.g., 10,000] cycles as per ASTM E292.
Function: Primary sealing element, welded to the stem and bonnet, forming a hermetic seal.
Testing: 100% helium leak tested per specified standards.

7.0 TESTING & INSPECTION

Shell Test: Per API 598 / ASME B16.34. Hydrostatic test at 1.5 x PN pressure.
좌석 누출 테스트: Per API 598.
Bellow Helium Leak Test: As per manufacturer’s standard (e.g., < 1 x 10^-6 mbar*l/s).
Fugitive Emissions Test: Optional, per specified standard (ISO 15848-1, etc.).
Documentation: Material Test Certificates (MTC/CMTR) as per EN 10204 3.1. Dimensional inspection report.

8.0 SURFACE FINISH

Internals: Smooth finish for process fluid compatibility.
Externals: Sandblasted and cleaned.
Painting: Carbon steel parts painted with epoxy primer and finish coat. Color per customer specification.

9.0 OPTIONS & ACCESSORIES

작동: Pneumatic, Electric, Hydraulic.
Gear Operator
Limit Switches / Positioners
Extended Bonnet for insulation or high/low temp
Jacketed Body
Cryogenic or High-Temperature Design
Special Coatings or Internal Polishing

10.0 NOTES

Specifications are subject to change based on specific customer requirements and final order confirmation.
All pressures and temperatures are interdependent; consult the manufacturer’s detailed P-T rating chart for the specific material combination.
The bellow is a critical safety component; proper handling and avoidance of over-travel during operation is essential.

보증:

SAVVY VALVES는 탁월한 제품 품질과 안심할 수 있는 애프터서비스를 제공하기 위해 최선을 다하고 있습니다. 당사 밸브는 최소 12개월의 서비스 수명을 보장하며, 이 기간 동안 필요한 모든 예비 부품과 자세한 유지보수 지침을 무상으로 제공합니다. 보증 기간 내에 인위적인 손상이 아닌 다른 원인으로 인한 손상이 발생할 경우, 무상으로 부품을 교체하고 전문 기술 지원을 제공합니다. 보증 기간이 만료된 후에는 예비 부품 비용만 지불하시면 되며, 할인된 유지보수 서비스 혜택도 누리실 수 있습니다. 당사의 목표는 신뢰할 수 있는 품질과 포괄적인 애프터서비스를 통해 고객의 운영 비용을 절감하고 생산 효율성을 향상시키는 것입니다. 기술 문의나 유지보수가 필요하시면 언제든지 전문가 팀이 신속하게 대응하여 밸브 시스템이 항상 최적의 성능을 유지하도록 보장합니다.