High-Performance | VF-9A
The VF‑9 High‑Performance Double‑Offset Butterfly Valve is engineered for the toughest industrial applications, delivering zero leakage, fire-safe reliability, and long cycle life. Its metal‑to‑metal double‑offset sealing ensures enhanced sealing efficiency and low operating torque, while providing a bi-directional, bubble‑tight seal in both high-temperature and high-pressure environments.
Petrochemical
Natural Gas
Steelmaking
Power
Cryogenic
Pulp & Paper
Nuclear
Highlights & Advantages
Premium Industrial Butterfly Valve for Demanding Conditions
- Designed for zero leakage and fire-safe reliability.
- Built with metal-to-metal double-offset sealing for enhanced sealing efficiency and low torque operation.
- Provides bi-directional, bubble-tight shutoff in high-temperature and high-pressure applications.
Certifications
|
TÜV Rheinland Certification |
Pressure Equipment Directive PED(H) 97/23/EC Explosion-Proof Certification – ATEX 2014/34/EU Fire Test – ISO 10497 API 609 Emission Test – ISO 15848-1 SIL 3 Safety Integrity Level Certification – IEC 61508-1ISO 14067 Carbon Footprint Standard
|
|
Metal Industries Research & Development Centre (MIRDC) |
Fire Test – ISO 10497, API 607 Emission Test – ISO 15848-1, TA-Luft Emission Test – ANSI/ISA 93.00.01 |
|
TSG – China Special Equipment Licensing |
Special Equipment Type Test Certification – TSG D7002 |
Features & Benefits
Shaft Strength Upgraded
Shaft strength increased by splined shaft without drilling on the shaft for taper pin.
Dust-proof
A set of bushing design preventsthe ingress of foreign materialinto the shaft area leads toshaft jamming.
Seat
Technical specifications are for reference only.
Value Valves reserves the right to modify product design without prior notice.
|
SOFT SEAT |
-100 ~ 260℃ | -148 ~ 500℉
Soft seat design with temperaturelimits. Usually applied at temperaturesbelow 260℃ .(500 ℉ ) |
|
METAL SEAT + SOFT SEAT |
-100 ~ 260℃ | -148 ~ 500℉
|
|
METAL SEAT |
-29 ~ 500℃ | -20~932℉ Leakage Class IV / V per ANSI FCI 70-2 and for high-temperature service conditions up to 500°C (932°F)
in petrochemical and refining processes.
|
Blow-Out Protection
Both the set bolt of the splinedshaft and bottom cover offersreliable blowout protection.
Blow-Out Protection
Both the set bolt of the splinedshaft and bottom cover offersreliable blowout protection.
Disc Indication Bi-Directional Shutoff Design
Disc Indication Bi-Directional Shutoff Design
The floating sealing design is self-adjustable,this mechanism provides flawless bubble tightshutoff
and provides the life cycles up to 2,000,000 cycles
Value's Patent Design
Patented seat and retainer design achievesenlarged sealing surface and reaches 100%tight shutoff.The valve can be fully closed for a long timewithout enlarging the soft seat because ofthe floating retainer design.At deadend service, retainer side of valveshall be fitted at upstream to reach tightshutoff.
Specifications
Technical specifications are for reference only.
Value Valves reserves the right to modify product design without prior notice.
| Size Range 2"- 48" | DN 50 - DN 1200 |
面間距 API 609 | ISO 5752 |
| Tempture Range -100°C ~ 500 °C | -148°F ~ 932°F |
閥門標記 MSS-SP-25 | API 609 |
| Pressure Ratings 150 LB | 300 LB |
設計法蘭 ASME B16.5 Class 150/300 ASME B16.47 Class 150/300 |
| Body Styles Wafer | Lug | Double Flanged |
Testing Standard ISO 5208 | API 598 | MSS SP-61 | MSS SP-68 |
| Seat Type SOFT SEAT METAL SEAT+SOFT SEAT METAL SEAT |
Fire Testing API 607 | ISO 10497 |
| Body Wall Thickness ASME B16.34 |
Fugitive Emissions ANSI/ISA-SP-93 | TA-Luft | ISO 15848 | API 641 |
| Operator Mounting Flange ISO 5211 |
Explosion-proof ATEX 2014/68/EU |
| Design Flange ASME B16.34 | ASME B16.5 | EN 593 |
Leakage Class ANSI FCI 70-2 Table 1 CLASS V/IV ISO 5208 Rate A | ANSI/ISA-SP-93 |
Customization Options
Application
Customization Options
-
Size & Materials
Special sizes and alloys available upon request to meet specific temperature and fluid requirements. -
Jacketed Design
Maintain fluid temperature to prevent solidification or viscosity changes in pipelines. -
Extended Stem Design
Ideal for high/low-temperature environments—reduces thermal conduction for operator safety.
Performance & Testing Facilities
-
Fire Testing Laboratory
Simulates real fire scenarios to evaluate pressure resistance and fire-safe integrity. -
Cryogenic Testing
Performs valve functionality tests at cryogenic temperatures down to -196°C, ensuring product reliability.
-
ISO-Class Clean Room
Supports oil-free cleaning and polishing for internal surfaces, meeting clean-service requirements.
-
Cycle Life Testing
Verifies long-term durability through repeated opening/closing cycles under simulated service conditions. -
Emissions Testing
Assesses fugitive emissions in control valves under volatile or hazardous fluid environments. -
Pressure Testing
All valves undergo full hydrostatic testing to meet both international standards & customer specifications.
