60″ Class 150 Extended Bonnet Buried Double Offset Rubber Seated Butterfly Valve

TECHNICAL DATA SHEET

Product: 60″ Class 150 Extended Bonnet Buried Double Offset Rubber Seated Butterfly Valve

1. VALVE DESCRIPTION

The valve is a double offset (double eccentric), rubber seated butterfly valve engineered for buried service in water and wastewater applications. The design features an extended bonnet and stem to place the operator above ground. The double offset geometry ensures low-torque operation and bubble-tight sealing with minimal seat wear. For underground corrosion resistance, the valve exterior is protected with a specialized coal tar paint system.

2. DESIGN STANDARDS

• Diseño de válvulas: API 609 Category B (Double Flanged, Double Offset)
• Pressure/Temperature Rating: ASME B16.34 Class 150
• Flange Drilling: ASME B16.47 Series A (MSS SP-44) / ASME B16.5 compatible
• Cara a cara: Manufacturer’s standard for buried service, based on API 609
• Testing & Inspection: API 598 (Zero Leakage)
• Buried Service Extension: Designed per AWWA M44

3. TECHNICAL SPECIFICATIONS

4. MATERIALS OF CONSTRUCTION

5. CORROSION PROTECTION (CRITICAL FOR BURIED SERVICE)

Per client specification, the external surfaces of the buried valve are protected by a Coal Tar Paintsystem, a specialized coating highly resistant to soil corrosion, moisture, and microbiological attack.

• External Coating System (Body, Bonnet, Extension Tube):
  • Material: Coal Tar Enamel Paint / Coal Tar Epoxy Paint
  • Application System: 1 coat of coal tar primer + 2 coats of coal tar finish.
  • Minimum Dry Film Thickness: 400 µm (16 mils).
  • Surface Preparation: Abrasive blast cleaning to Sa 2.5 (ISO 8501-1) / SSPC-SP10.
  • Properties: Excellent adhesion, high electrical resistivity, impervious to water and aggressive soils.
• Internal Coating (Wetted Parts):
  • Material: Fusion Bonded Epoxy (FBE), min. 250 µm.
  • Proceso de dar un título: Suitable for potable water (WRAS / NSF 61 optional).
  • Color: Blue or black.

6. DOUBLE OFFSET DESIGN FEATURES

• 1st Offset: Stem axis offset from the seat plane, allowing friction-free disengagement.
• 2nd Offset: Stem axis offset from pipe centerline, ensuring a continuous uninterrupted sealing surface.
• EPDM Seat: Excellent aging resistance, bubble-tight shutoff, and long service life in water.

7. EXTENDED BONNET / BURIED SERVICE DETAILS

• Configuración: Flanged extension bonnet with anti-corrosion coating.
• Extension Length: Customized to client’s depth of cover (ground to pipe crown).
• Indicator: Visual position indicator integrated in the gearbox.
• Optional Accessories: 2″ square operating nut, street box, floor stand.

8. TESTING & CERTIFICATION

• Hydrostatic testing per API 598: Shell (1.5x) and Seat (1.1x) with zero leakage.
• Material certificates to EN 10204-3.1 available on request.
• Coating inspection: Holiday testing at 1000V to ensure pinhole-free application of coal tar paint.

9. APPLICATIONS

Ideal for underground on/off and throttling service in:

• Raw water transmission mains
• Potable water distribution
• Wastewater treatment
• Irrigation networks

Note: Final dimensions and weights provided in the certified general arrangement drawing after order placement.

GARANTÍA:

SAVVY VALVES se compromete a ofrecer una calidad de producto excepcional y un servicio posventa sin complicaciones. Nuestras válvulas tienen una vida útil mínima garantizada de 12 meses, durante los cuales suministraremos todos los repuestos necesarios e instrucciones detalladas de mantenimiento de forma gratuita. Durante el período de garantía, si se produce algún daño no provocado por el hombre, reemplazaremos los componentes sin coste alguno y ofreceremos soporte técnico profesional. Una vez vencida la garantía, los clientes solo deberán pagar el coste de los repuestos y seguirán beneficiándose de descuentos en los servicios de mantenimiento. Nuestro objetivo es ayudar a los clientes a reducir los costes operativos y mejorar la eficiencia de la producción mediante una calidad fiable y un soporte posventa integral. Ya sea para consultas técnicas o necesidades de mantenimiento, nuestro equipo de expertos responderá con prontitud para garantizar que su sistema de válvulas mantenga un rendimiento óptimo en todo momento.