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

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

• Valve Design: 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
• Face-to-Face: Manufacturer’s standard for buried service, based on API 609
• Testing & Inspection: API 598 (Zero Leakage)
• Buried Service Extension: Designed per AWWA M44

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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.

  1. DESIGN STANDARDS
  • Konstrukce ventilu: 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
  • Osobní setkání: Manufacturer’s standard for buried service, based on API 609
  • Testing & Inspection: API 598 (Zero Leakage)
  • Buried Service Extension: Designed per AWWA M44
  1. TECHNICAL SPECIFICATIONS

Parametr

Value

Nominal Diameter (NPS)

60 inch (DN 1500)

Pressure Class

Class 150 (PN 20)

Typ ventilu

Double Offset, Rubber Seated, Buried Service

Connection Type

Double Flanged

Operace

Manual Gear Operator with Extended Stem and Handwheel

Leakage Rate

Zero Leakage (API 598, resilient seated)

Flow Direction

Bi-directional, dead-end service capable

Max. Working Pressure (Water @ 38°C)

19.6 bar (285 psi)

Shell Test Pressure

29.3 bar (425 psi)

Seat Test Pressure

21.6 bar (313 psi)

Face-to-Face Dimension

Per manufacturer’s standard for buried valves

  1. MATERIALS OF CONSTRUCTION

Component

Materiál

Standard / Grade

Tělo

Tvárná litina

ASTM A536 Gr. 65-45-12 / EN-GJS-500-7

Disk

Tvárná litina

ASTM A536 Gr. 65-45-12, Coated

Sedadlo

EPDM Rubber

Fully integrated, field replaceable

Stem (Shaft)

Stainless Steel

AISI 420 (1.4021) or AISI 316

Extension Stem

Stainless Steel

AISI 304 (1.4301)

Extension Tube (Bonnet)

Carbon Steel

ASTM A53 / S235, External Coal Tar Paint

Stem Bearings

PTFE lined / Bronze

Self-lubricating

Packing

PTFE / Graphite

Adjustable, located at top of extension tube

Gearbox Housing

Ductile Iron / Cast Iron

Fully enclosed, lubricated for life

Handwheel

Ductile Iron / Steel

Rising-non-rising indicator

Floor Plate

Carbon Steel

External Coal Tar Paint

  1. 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.
    • Osvědčení: Suitable for potable water (WRAS / NSF 61 optional).
    • Color: Blue or black.
  1. 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.
  1. EXTENDED BONNET / BURIED SERVICE DETAILS
  • Konfigurace: 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.
  1. 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.
  1. 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.

ZÁRUKA:

Společnost SAVVY VALVES se zavazuje poskytovat výjimečnou kvalitu produktů a bezstarostný poprodejní servis. Naše ventily mají zaručenou minimální životnost 12 měsíců, během níž zdarma dodáme všechny potřebné náhradní díly a podrobné pokyny k údržbě. V případě poškození, které není způsobeno lidskou činností, v rámci záruční doby bezplatně vyměníme komponenty a poskytneme profesionální technickou podporu. Po uplynutí záruky zákazníci uhradí pouze náklady na náhradní díly a zároveň mohou využívat zlevněné služby údržby. Naším cílem je pomáhat klientům snižovat provozní náklady a zvyšovat efektivitu výroby prostřednictvím spolehlivé kvality a komplexní poprodejní podpory. Ať už se jedná o technické dotazy nebo potřeby údržby, náš tým odborníků vám promptně zareaguje, aby zajistil, že váš ventilový systém bude vždy udržovat optimální výkon.

 

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