Abstract: A pressure actuated valve assembly includes a valve body. The downstream end portion of a main spring is engaged with a downstream end portion of the valve body and the main spring is axially aligned with the valve body. A main spring guide is engaged with an upstream end portion of the main spring proximate an upstream end portion of the valve body. The main spring guide is mounted for movement toward the downstream end portion of the valve body by compression of the main spring. A hold-down sleeve is engaged with the downstream end portion of the valve body and includes a stop structure proximate the main spring guide. The stop structure is configured to engage the main spring guide to maintain a predetermined minimum clearance between the main spring guide and the upstream end portion of the valve body with the valve body in the closed condition.

Abstract: A pressure actuated valve assembly includes a valve body. The downstream end portion of a main spring is engaged with a downstream end portion of the valve body and the main spring is axially aligned with the valve body. A main spring guide is engaged with an upstream end portion of the main spring proximate an upstream end portion of the valve body. The main spring guide is mounted for movement toward the downstream end portion of the valve body by compression of the main spring. A hold-down sleeve is engaged with the downstream end portion of the valve body and includes a stop structure proximate the main spring guide. The stop structure is configured to engage the main spring guide to maintain a predetermined minimum clearance between the main spring guide and the upstream end portion of the valve body with the valve body in the closed condition.

Abstract: Systems and methods for monitoring and reporting data collected from a remote location are disclosed. A work order, defining a target to be inspected at a remote site and including an inspection plan for collecting target inspection information, is generated on a base-station system and transferred to a portable computing system. Inspection data is collected pursuant to the inspection plan on the portable computing system. Inspection data is transferred from the portable computing system to the base-station system for storage and the generation of related reports.

Abstract: Systems and methods for recording and reporting data collected from a remote location are disclosed. A work order, defining infrastructure to be inspected at a remote site and including an inspection plan for collecting inspection information, is generated on a first computer system and transferred to a portable computing system. Inspection data is collected pursuant to the inspection plan on the portable computing system. A global positioning system (GPS) receiver associated with the portable computing system provides location information related to inspected infrastructure during the inspection. After collection, inspection data is transferred from the portable computing system to the first and/or to a second computing system for storage and the generation of related reports. The location information obtained during the inspection can be used to determine dimensional measurements of the infrastructure and to generate visual depictions of infrastructure components and defects.