3″-300LB-RF Piston Type Pneumatic Actuated Control Valve c/w E/P Positioner

Loại van

Pneumatic Actuated Control Valve / Globe Control Valve

Kích thước danh nghĩa

3 Inch (DN80)

Xếp hạng áp suất

Class 300 LB (PN50)

Vật liệu thân máy

Carbon Steel WCB / Stainless Steel CF8M (as required)

Flange Connection

RF (Raised Face) to ASME B16.5 Class 300

Actuator Type

Piston Type Pneumatic Actuator (single-acting or double-acting)

Accessories

Electro-Pneumatic (E/P) Positioner, 4-20mA input signal

Ứng dụng

Precise flow, pressure, or temperature control in oil, gas, chemical, power, and metallurgical industries

Valve Design Code

ANSI/ISA-75.08.01 / ASME B16.34 / IEC 60534 series

Face-to-Face Dimension

ANSI/ISA-75.08.01 / ASME B16.10

Flange Dimensions

ASME B16.5 Class 300 RF

Pressure-Temperature Rating

ASME B16.34

Lớp rò rỉ

FCI 70-2 / IEC 60534-4 (Class IV standard; Class V/VI optional)

Inspection & Testing

IEC 60534-4 / ANSI/ISA-75.08.01

Actuator Standard

IEC 60534-6 / ISO 5210 (mounting interface)

Positioner Standard

IEC 60534-6-1 (mounting and signal interface)

Fire Safe Design

API 607 / ISO 10497 (optional)

Thân hình

ASTM A216 WCB Cast Steel

ASTM A351 CF8M (316 SS), Alloy Steel

Bonnet

ASTM A216 WCB (matching body)

ASTM A351 CF8M

Valve Plug (Trim)

ASTM A479 304/316 SS + Stellite hardfacing

316L, Hastelloy, Monel

Ghế

ASTM A479 304/316 SS + Stellite hardfacing

316L, Hastelloy, PEEK

Thân cây

ASTM A276 304/316 SS

17-4PH, Inconel

Stem Packing

Flexible graphite + SS spacer rings

PTFE, low emission packing (ISO 15848)

Gaskets

Flexible graphite + SS spiral wound

Metal ring gasket, PTFE

Fasteners

ASTM A193 B7 Alloy Steel (zinc plated)

ASTM A193 B8 Stainless Steel

Cylinder Body

Cast aluminum / Carbon steel

Stainless steel

Piston

Carbon steel + chrome plating / Stainless steel

Bronze

Piston Seal

NBR / PTFE + carbon graphite

FKM, Silicone

Cylinder End Cap

Cast aluminum / Carbon steel

Stainless steel

Spring (single-acting)

Alloy spring steel

Stainless steel

Air Supply Port

G 1/4″ / NPT 1/4″

Custom

Positioner Housing

Cast aluminum / Engineering plastic

Stainless steel (corrosion resistant)

Input Signal

4-20 mA DC (two-wire)

0-10V, HART, Profibus PA

Air Supply Port

G 1/4″ / NPT 1/4″

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Enclosure Protection

IP66 (standard)

IP67, Explosion-proof Ex d / Ex ia

Face-to-Face Length L

Approx. 295 mm (per ANSI/ISA-75.08.01)

Flange Outer Diameter D

Approx. 210 mm (ASME B16.5 Class 300)

Bolt Circle Diameter K

Approx. 168 mm

Flange Thickness C

Approx. 28 mm

Number / Diameter of Bolt Holes

8 × 22 mm

Center Height (flange face to center)

Approx. 150 mm

Overall Height (incl. actuator & positioner) H

Approx. 800 – 1,100 mm (depending on actuator size and stroke)

Valve Body Weight (excl. actuator)

Approx. 55 – 70 kg (depending on material)

Actuator Weight (reference)

Approx. 40 – 100 kg (depending on bore and stroke)

-29 ~ 38

51.1

740

100

46.6

675

150

44.8

650

200

41.9

610

250

39.5

575

300

37.1

540

350

34.1

495

400

30.2

440

425

26.8

390

Xếp hạng áp suất

Class 300 (51.1 bar @ 38°C)

Shell Test Pressure

1.5 × rated pressure (approx. 77 bar)

Seat Test Pressure

1.1 × rated pressure (approx. 56 bar)

Low-Pressure Air Seat Test

6 bar

Leakage Class (standard)

Class IV (FCI 70-2 / IEC 60534-4)

Leakage Class (optional)

Class V / Class VI (soft seat)

Flow Characteristic

Equal Percentage (EQ%) / Linear (LIN)

Flow Coefficient Cv (typical)

Approx. 100 – 150 (depending on trim and stroke)

Rangeability

50:1 (standard)

Temperature Range (standard graphite packing)

-29°C ~ +425°C

Temperature Range (low temp service)

-196°C ~ +260°C (with low temp materials)

Suitable Media

Water, steam, oil, gas, chemical media, etc.

Action Type

Single-acting (spring return) / Double-acting (no spring)

Air Supply Pressure

4 – 8 bar (6 bar recommended)

Stroke

25 mm, 38 mm, 50 mm, etc. (sized based on valve size and differential pressure)

Output Thrust (single-acting)

Depends on cylinder area and supply pressure; up to 5,000 – 50,000 N

Output Thrust (double-acting)

Depends on cylinder area and supply pressure; up to 10,000 – 100,000 N

Travel Speed

≤ 1.5 sec / full stroke (adjustable)

Explosion Proof

No electrical parts; not intrinsically explosion-proof; can be fitted with Ex accessories

Enclosure Protection

IP65 / IP67

Ambient Temperature Range

-20°C ~ +80°C (standard seals)

Input Signal

4-20 mA DC (two-wire, loop powered)

Input Impedance

Approx. 250 Ω (4-20mA)

Output Pneumatic Signal

0.2 – 1.0 bar (standard) / 0 – 10 bar (optional)

Supply Pressure

1.4 – 7 bar (depending on actuator requirement)

Air Consumption

Single-acting: approx. 5 L/min (at 0.14 MPa supply)
Double-acting: approx. 15 L/min (at 0.4 MPa supply)

Linearity

≤ ±1.0% F.S.

Repeatability

≤ ±0.5% F.S.

Sensitivity

≤ 0.2% F.S.

Stroke Range

10 – 100 mm (linear valve)

Ambient Temperature Range

-20°C ~ +70°C

Enclosure Protection

IP66 (standard)

Explosion Proof (optional)

Ex d IIC T4 / Ex ia IIC T4

Communication Protocol (optional)

HART, Profibus PA, Foundation Fieldbus

Valve Position Feedback (optional)

4-20 mA position feedback signal

Air-to-Open (ATO / FC)

Spring return → Fail Closed

Positioner output goes to zero → Valve closes

Air-to-Close (ATC / FO)

Spring return → Fail Open

Positioner output goes to zero → Valve opens

Double-acting

No spring → Fail Lock (holds last position)

Depends on positioner configuration

Air Filter Regulator

Cleans and stabilizes air supply pressure

Solenoid Valve

Provides emergency shut-off or remote on-off control

Position Transmitter / Limit Switches

Provides 4-20mA position feedback or dry contact signals

Lock-up Valve

Maintains valve position upon air supply failure

Pneumatic Booster

Increases response speed for high flow applications

Manual Override (Handwheel)

Allows manual operation when power/air is lost