Atwood & Morrill®
Forged Parallel Slide Valves
KEY FEATURES & BENEFITS
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Body: One piece forging to minimize material defects and deliver exceptional durability.
YOKE ROD UPPER STRUCTURE
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Provides easy access to packing gland and rigid support for operator.
INDEPENDENT DISCS
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Free to rotate and align with body seat rings, prevents thermal binding.
SEATING SURFACES
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Alloy 6 on Inconel Butter Layer seating surfaces (seat rings and discs) provides superior bonding to the base material and supports a longer life.
SEATS
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Wide, flat seating surfaces tolerate minor damage that can easily cause leakage in valves that utilize line contact seating.
APPLICATIONS
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Main Steam Isolation
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Hot Reheat Isolation
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Other combined cycle, critical, super-critical, and ultra super critical steam applications.
DESIGN STANDARD
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ASME B16.34
PRESSURE CLASS RANGE
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ASME 600 to 2500
SIZE RANGE
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6 - 30 inches (150 - 750 mm)
TEMPERATURE RANGE
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Up to 1,200ºF
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Up to 649ºC
MATERIALS
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ASTM A105
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A182 F11
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F22
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F91
END CONFIGURATION
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Weld End