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Help CenterAPI 609 Certified Butterfly Valve, ANSI Class 150 Flanged, 2-Way Isolation, Standard Compliant
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Shanghai Zhibang Valve Manufacture Co., Ltd. brings to the market a premium API 609 compliant butterfly valve with ANSI Class 150 flanged ends, engineered for reliable 2-way isolation in critical flow control systems. Since 2016, our factory has dedicated itself to manufacturing valves that meet international standards, backed by ISO9001 quality management and an annual export value of US$1 – US$1.5 million. This butterfly valve combines robust construction with precision sealing, making it an ideal choice for water, oil, gas, and chemical applications across global industries.
Every unit is designed to comply with the dimensional and testing requirements of API 609, ensuring interchangeability and consistent performance. The flanged ends conform to ASME B16.5, simplifying installation into existing piping systems. With its bubble-tight shut-off and bi-directional flow capability, this valve provides dependable service in isolation and regulating duties.
Key Features & Benefits
- API 609 Compliance: Meets all face-to-face dimensions, pressure/temperature ratings, and leakage testing specified in API 609 for short and long patterns.
- ANSI Class 150 Rating: Suitable for low to medium pressure applications (up to 285 psi at ambient temperature).
- Flanged Connection: Standard ASME B16.5 Class 150 flanges for easy alignment and secure bolt-up.
- 2-Way Isolation: Positive shut-off in both flow directions with Class VI (bubble-tight) leakage performance.
- Versatile Material Options: Body available in WCB, CF8, CF8M, or ductile iron; disc in CF8, CF8M, aluminum bronze, or ductile iron; seat in EPDM, NBR, PTFE, or Viton for broad media compatibility.
- Stem Safety: Anti-blowout stem design prevents accidental dislodgement under pressure.
- Low Operating Torque: Optimized disc profile reduces actuation effort, prolonging actuator life.
- Adjustable Packing Gland: Allows field adjustment of stem seal without removing actuator.
- Quick Delivery: Standard sizes held in stock; custom sizes and actuation ready within weeks.
Technical Specifications
| Parameter | Value |
| Standard | API 609 (Table 1 / Table 2) |
| Pressure Class | ANSI Class 150 |
| Size Range | 2" – 24" (DN50 – DN600) |
| Connection | Flanged, ASME B16.5 Class 150 RF |
| Face-to-Face | Short pattern (ISO 5752) / Long pattern available |
| Temperature Range | -20°C to +150°C (seat dependent) |
| Leakage Rate | API 598 Class VI (bubble-tight) |
| Body Material | WCB, CF8, CF8M, Ductile Iron |
| Disc Material | CF8, CF8M, Al Bronze, Ductile Iron |
| Stem Material | SS410, SS304, SS316 |
| Seat Material | EPDM, NBR, PTFE, Viton |
| Actuation | Manual lever / Gearbox / Pneumatic / Electric actuator |
The valve's 2-way isolation capability is achieved through a resilient seat design that provides positive sealing at rated pressure in both directions. This eliminates the need for additional check valves in many applications, reducing system cost and complexity. The flanged configuration allows straightforward installation and maintenance, with standard bolt patterns matching ANSI B16.5 flanges.
Manufactured under ISO9001 quality system, each valve undergoes dimensional inspection, hydrostatic shell test, seat leakage test (API 598), and operational test before shipment. We offer custom options such as extended stems, locking devices, position indicators, and special coatings for corrosive environments.
With our extensive experience exporting to North America, South America, Europe, Southeast Asia, Africa, Oceania, the Middle East, and domestic China, we understand the diverse requirements of global clients. Our port of shipment options (Shanghai, Guangzhou, Hong Kong, Beijing) ensure flexible logistics.
Choose Shanghai Zhibang Valve for a product that delivers reliability, compliance, and value. Contact us today to discuss your specific needs, request a quote, or place an order. Our team is ready to support you with technical documentation, certification, and after-sales service.
FAQ
Q1: Is this valve fully compliant with API 609?
A: Yes, the valve is designed and tested to meet all dimensional and performance requirements of API 609 (both Table 1 and Table 2 patterns). We provide a certificate of compliance upon request.
Q2: Can the valve be used for gas or air services?
A: Absolutely. With bubble-tight shut-off Class VI, it is suitable for gas, air, and other non-corrosive media. Select appropriate seat material (e.g., PTFE for higher temperature) for your application.
Q3: What actuation options are available?
A: We offer manual lever with 10-position locking plate, worm gearbox for larger sizes, pneumatic actuator (single/double acting), and electric actuator (on/off or modulating). Actuator selection depends on operating torque and power supply.
Q4: How long is the delivery time for standard sizes?
A: Most standard sizes (2"–12") are in stock and can be shipped within 10–15 working days after order confirmation. Custom sizes or special materials may require 30–45 days.
Q5: Do you provide test certificates and materials certificates?
A: Yes, we provide Mill Test Report for materials, hydrostatic/pneumatic test reports, and work to order certificates per API 609 or as required by your contract.
Q6: What is the maximum working pressure of this valve?
A: For ANSI Class 150, the maximum allowable working pressure is 285 psi (19.6 bar) at ambient temperature. Higher temperatures reduce the pressure rating according to ASME B16.34.
Q7: Can the valve be fitted with a locking device?
A: Yes, we can add a padlock staple or a locking lever handle for tamper-proof positioning. Please specify when ordering.
Q8: Is your company ISO certified?
A: Yes, our factory holds ISO9001 certification, ensuring consistent quality management from raw material procurement to final inspection and packaging.
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