4″*3″-1500LB F316L 3-Piece Trunnion Ball Valve

Nominal Size 4″ x 3″ (End Connections: 4″ / Bore: 3″)
Pressure Rating Class 1500 (PN 250)
Valve Type Trunnion Mounted Ball Valve
Body Construction 3-Piece (End Caps + Center Body)
End Connections Flanged – ASME B16.5 Class 1500 (RF or RTJ)
Seat Type Metal to Metal (Hardfaced)
Temperature Range –29°C ~ +500°C (depending on hardfacing material)
Suitable Media High temperature steam, thermal oil, abrasive slurries, corrosive fluids, high pressure gas/liquid
Fire Safe Design API 607 / ISO 10497 (inherently fire safe)

문의하기

4″*3″-1500LB F316L 3-Piece Trunnion Ball Valve

TECHNICAL DATA SHEET

Product: 3-Piece Trunnion Mounted Ball Valve – Metal Seated
크기: 4″ x 3″ (Reducer Bore / Reduced Port)
압력 등급: Class 1500
본체 소재: F316L (ASTM A182 F316L)
Seat Type: Metal‑to‑Metal Seated
Design: 3-Piece Body, Trunnion Ball

Basic Specifications

매개변수	Value
공칭 크기	4″ x 3″ (End Connections: 4″ / Bore: 3″)
압력 등급	Class 1500 (PN 250)
밸브 유형	트러니언 장착 볼 밸브
차체 구조	3-Piece (End Caps + Center Body)
End Connections	Flanged – ASME B16.5 Class 1500 (RF or RTJ)
Seat Type	Metal‑to‑Metal (Hardfaced)
온도 범위	–29°C ~ +500°C (depending on hardfacing material)
Suitable Media	High‑temperature steam, thermal oil, abrasive slurries, corrosive fluids, high‑pressure gas/liquid
Fire Safe Design	API 607 / ISO 10497 (inherently fire‑safe)

Main Features

Trunnion Mounted Ball: Ball is supported by upper and lower trunnion bearings, reducing operating torque and ensuring smooth operation under high differential pressure. Ideal for large sizes and high‑pressure applications.
Reduced Bore (4″ x 3″): 4″ flanged connections with a 3″ internal bore reduces weight and cost while maintaining adequate flow capacity.
3-Piece Body Construction: Center body with bolted end caps allows easy in‑line maintenance – seats, ball, and seals can be accessed without removing the entire valve from the pipeline.
Metal‑to‑Metal Seating: Ball and seats are hardfaced with wear‑resistant alloys (e.g., tungsten carbide, chromium carbide, or Stellite). Provides exceptional durability in high‑temperature, abrasive, and erosive services.
Spring‑Loaded Seats: Metal seats are typically pre‑loaded with Inconel springs to maintain continuous contact with the ball, ensuring tight shut‑off even under low pressure or thermal cycling.
Double Block & Bleed Capability: With two independent metal seats, the cavity between seats can be vented or monitored.
Anti‑Static Device: Ensures electrical continuity between ball, stem, and body.
Blowout‑Proof Stem: Stem is designed to prevent ejection under pressure.

Material List (Metal Seated Configuration)

Item	Part	재료
1	Body (Center)	F316L (ASTM A182 F316L)
2	End Caps (2 pcs)	F316L (ASTM A182 F316L)
3	공	F316L + Tungsten Carbide (WC) Coating / Chromium Carbide (CrC) Coating
4	Seat Rings (2 pcs)	F316L + Stellite 21 Hardfacing
5	줄기	F316 / 17-4PH / Inconel 718
6	Trunnion Bearings	Reinforced PTFE / Carbon Graphite / Metal‑lined
7	Stem Packing	Flexible Graphite + Braided Graphite
8	Body Gaskets	Spiral Wound, F316L + Graphite
9	Bolting	A193 B8M / A194 B8M (316 stainless steel)
10	Seat Springs	Inconel X‑750 / Inconel 718

Note: Hardfacing materials can be customized based on media and temperature (e.g., Stellite 6, Stellite 21, tungsten carbide).

Hardfacing Options for Metal Seats

Hardfacing Material	Hardness (HRC)	Max Temperature	Typical Application
Tungsten Carbide (WC)	65 – 72	~400°C	Severe abrasive service, slurry, sand
Chromium Carbide (CrC)	58 – 65	~800°C	High‑temperature, moderate abrasion
Stellite 21	35 – 45	~650°C	General high‑temperature, corrosion, galling resistance
Stellite 6	38 – 48	~800°C	High‑temperature steam, thermal oil

Dimensions & Structural Data (Flanged Ends)

매개변수	Value
Face‑to‑Face Length (L)	~483 mm (per ASME B16.10 for Class 1500, 4″ valve)
Flange Standard	ASME B16.5 Class 1500
Flange Facing	Raised Face (RF) or Ring Type Joint (RTJ)
Bore Diameter (Reduced)	3″ (DN80) – approximately 76 mm
End Connection Size	4″ (DN100) flanged
Approx. Weight	~190 – 260 kg (depending on configuration)
Operating Torque	~600 – 1200 N·m (metal seated, trunnion type)

Note: Final dimensions to be confirmed by manufacturing drawings.

Design & Testing Standards

Item	기준
Design & Manufacture	API 6D, API 608, ASME B16.34
Flanged End Connections	ASME B16.5 Class 1500
Pressure‑Temperature Rating	ASME B16.34
Fire Safe Test	API 607 or API 6FA (metal seated inherently fire‑safe)
NACE Compliance	NACE MR0175 / ISO 15156 (optional)
Pressure Testing	API 598 or ISO 5208
Low‑Pressure Air Test	0.6 MPa (6 bar) – metal seated: acceptable leakage per API 598 (typically ≤ 10‑20 ml/minute/inch of seat diameter)
High‑Pressure Hydrostatic Test	1.5 × rated pressure (body), 1.1 × rated pressure (seat)

Metal Seated vs. Soft Seated Comparison

Feature	Metal Seated	Soft Seated (PTFE/PEEK)
온도 범위	–29°C ~ +500°C	–196°C ~ +260°C
Leakage Rate	API 598 Class V / VI (low but not bubble‑tight)	Bubble‑tight (zero leakage)
Abrasion Resistance	Excellent	Poor
Fire Safety	Inherently fire‑safe	Requires fire‑safe design (API 607)
Torque	Higher	Lower
Suitable Media	Abrasive, high‑temp, steam, slurry	Clean fluids, cryogenic, chemicals

Operating Torque & Actuator Sizing

Higher Torque Requirement: Metal seated valves require significantly higher torque than soft seated valves due to metal‑to‑metal contact and spring preload.
Trunnion Advantage: Despite higher torque, the trunnion design reduces torque compared to a floating ball of the same size.
Safety Factor: Actuator output torque should be at least 1.3 – 1.5 times the maximum measured valve torque.
Breakaway Torque: Especially critical after prolonged closure; may be higher than running torque.

Typical Applications

High‑Temperature Processes: Refinery thermal cracking units, FCCU slurry, steam systems up to 500°C.
Abrasive Media: Catalyst lines, mining slurries, sand handling.
Sour Service: With NACE MR0175 materials, suitable for high‑pressure sour gas.
Offshore & Subsea: Corrosion‑resistant F316L with metal seats for reliability in demanding environments.
Chemical Processing: Handling corrosive fluids at elevated temperatures.

Ordering Information

When ordering, please specify:

Size: 4″ x 3″ (Reduced Bore)
Pressure Class: Class 1500
Body Material: F316L
Seat Type: Metal Seated (specify hardfacing: WC / CrC / Stellite)
End Connections: Flanged – ASME B16.5 Class 1500 (RF or RTJ)
Optional Features: NACE MR0175, cryogenic trim (if required), spring‑loaded seats, actuator mounting

This data sheet reflects the metal seated configuration for the 4″ x 3″ – 1500LB F316L 3-Piece Trunnion Ball Valve. For full bore versions, soft seated options, or additional customizations, please contact us with your specific requirements.

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