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KOSO 521F / 531F Three-Way Diverting and Mixing Globe Valve
Three-way globe control valve, diverting (521F) or mixing (531F), 3/4" to 8", ASME Class 150 to 600, -45 to +300 °C, quick change top guided trim.
Certified equipment
ATEX / IECEx documentation supplied where stated
Worldwide delivery
Incoterms agreed in each quotation
Quotation first
Price, lead time and certificates in every offer
The KOSO 521F diverting valve divides one flow into two directions, while the 531F mixing valve converges two flows into one. For sizes 2-1/2" and below, the 531F can also be used for diverting service.
The quick change trim with clamped-in seat ring allows maintenance with the body in line. Manufactured to ASME B16.34 by KOSO India and Nihon KOSO.
Key features
- Diverting or mixing configuration
- Quick change trim with top guided plug
- Linear and on-off characteristics, different Cv per port on request
- Carbon steel and stainless steel bodies
- Excellent control rangeability (30:1)
Standard specification
| Body type | 521F, 531F |
|---|---|
| Body size | 3/4"(20A) to 8"(200A) |
| Body rating | ANSI Class 150 to 600, JIS 10K to 40K |
| Fluid temperature | -45 to +300°C |
| Connections | Flanged (RF) |
| Body materials | SCPH2/WCB, SCS13A/CF8, SCS14A/CF8M |
| Trim materials | SCS14A/CF8M, SCS24 |
| Rangeability | 30:1 |
| Flow characteristics | Linear, ON-Off |
| Seat Leakage | Rated Cv × 0.1% ANSI/FCI 70-2 Class III |
| Actuator combination | 5200LA: Pneumatic Diaphragm Actuator 6300LA: Pneumatic Cylinder Actuator 3500LB,3600LB: Solid State Electronic Actuator 3800LA: Microprocessor Actuator |
Applications
Oil and gas production and processing, refineries and petrochemical plants, LNG, power plants, fertilizer and chemical plants: flow, pressure, level and temperature control loops.
Documentation
The manufacturer brochure is available in the attachments. Send us your process data (fluid, flow, pressures, temperature, line size and rating) with your quotation request so that KOSO can size and select the right model.
KOSO-521F
Data sheet
- Manufacturer series
- 521F / 531F
- Product type
- Three-way diverting and mixing globe valve
- Size range
- 3/4 in to 8 in
- Origin
- KOSO group
- Rating / output
- ASME 150 to 600
9 other products in the same category:
Three-way globe control valve, diverting (521F) or mixing (531F), 3/4" to 8", ASME Class 150 to 600, -45 to +300 °C, quick change top guided trim.