This listing is for a 4-inch Spectacle Blind, manufactured according to standard drawing AD-036636-001. Constructed from high-strength Inconel 625 (UNS N06625) and designed for high-pressure applications, this spectacle blind provides a reliable method for physically isolating pipelines.

Compliant with NACE MR0175/ISO 15156 standards, this blind is suitable for sour service environments where sulfide stress cracking is a concern. The raised face (RF) flange ensures a tight seal when installed correctly.

Key Specifications

Size	4 Inch
Class Rating	600
Facing	Raised Face (RF)
Material	ASTM B564 (UNS N06625) Inconel 625
Standard Drawing	AD-036636-001
Compliance	NACE MR0175/ISO 15156

Application & Use

Spectacle blinds are typically used in pipeline systems where positive shut-off is required for maintenance, inspection, or process changes. They are commonly found in oil and gas, chemical processing, and water treatment facilities. The Inconel 625 construction makes it suitable for corrosive environments where other materials would fail.

Condition & Availability

Please contact us for current stock availability and lead times. All spectacle blinds are new, unused, and inspected to ensure quality and compliance with specified standards. Traceability documentation may be available upon request.