Penberthy Series 700 Gauge Valves provide OS&Y offset pattern isolation for direct reading flat glass gauges. These flat glass gaugecocks provide a 90° connection to the process vessel. They also help isolate the gauge chamber from the vessel’s liquid contents.
Operators use Series 700 gauge valves for high-temperature or corrosive liquid applications in petroleum, chemical, and general process industries. The outside screw and yoke design keeps the stem threads away from the liquid. In addition, the stem seats with a reciprocating motion rather than a rotary motion.
The offset pattern also helps simplify gauge cleaning. By removing the vent and drain plugs, operators can open a straight passage through the gauge chamber. Then, they can insert a brush through the gaugecock vent and drain to clean the gauge glass.
The Series 700 includes Model 720 with a union gauge connection, Model 730 with a rigid gauge connection, and Model 780 with a stuffing box gauge connection. These gauge valves support a maximum pressure of 4000 psi at 100°F and a temperature range from -20°F to 750°F.
Westech Industrial supplies Penberthy Series 700 Gauge Valves in Western Canada, including BC, AB, and SK. Our team can help customers select gauge valve materials, gauge connections, vessel connections, and ASME service options. Westech also supports process instrumentation projects with service capabilities, product support, and custom fabrication for integrated measurement and process packages.
Quantity
PRODUCT FEATURES
REQUEST FOR INFORMATION
Description
OS&Y Design for Demanding Liquid Applications
Penberthy Series 700 gauge valves use an outside screw and yoke design for demanding process applications. This design keeps the stem threads isolated from the liquid. As a result, the valve supports high-temperature and corrosive liquid service.
The stem seats with a reciprocating motion instead of a rotary motion. This design supports smooth isolation around direct reading flat glass gauges. In addition, the backseating stem adds a useful operating feature for gauge valve service.
Offset Pattern for Easier Gauge Glass Cleaning
The offset pattern gives the Series 700 a major maintenance advantage. Operators can remove the vent and drain plugs to open a straight passage through the gauge chamber. Then, they can insert a brush through the gaugecock vent and drain.
This design helps crews clean the inside of the gauge glass with less disassembly. Therefore, the Series 700 gauge valves work well in applications where visibility and routine maintenance matter.
Automatic Ball Check Shut-Off
Series 700 gauge valves include automatic ball check shut-off. If gauge glass breaks, the pressure drop causes the ball checks to seat. This action helps reduce rapid loss of process fluid from the vessel.
Both upper and lower gaugecocks use horizontal ball checks. The ball checks sit on the vessel side of the gaugecock seats. During liquid level readings, the gaugecock stem extension pushes the ball away from its seat. This allows liquid to pass around the ball and fill the gauge column.
Multiple Gauge Connection Styles
The Series 700 includes three main model configurations. Model 720 uses a union gauge connection. Model 730 uses a rigid gauge connection. Model 780 uses a stuffing box gauge connection.
These options help teams match the valve style to the gauge installation. In addition, Series 700 gauge valves offer threaded, socket weld, flanged, and spherical union connection options. This flexibility helps support different vessel layouts and maintenance requirements.
Renewable Seat and Backseating Stem
The threaded renewable seat helps support long-term serviceability. Instead of replacing the full valve assembly, teams can address seat wear through the renewable seat design.
The backseating stem also supports practical operation. Together, these features help make the valve easier to service over time. Consequently, the Series 700 offers a strong fit for critical process gauge applications.
ASME Service Options
Series 700 gauge valves can be supplied to meet ASME requirements. For ASME boiler requirements, gaugecocks with ball checks omitted are available.
As an alternative, Models 720 and 780 can use an optional vertical rising ball check in the lower gaugecock. In that configuration, the upper gaugecock uses a leaky seat. Westech can help review the correct configuration before ordering.
Applications
Penberthy Series 700 gauge valves support direct reading flat glass gauge applications where process teams need isolation, cleaning access, and dependable gauge valve operation.
- Direct reading flat glass gauge isolation
- High-temperature liquid applications
- Corrosive liquid applications
- Petroleum process equipment
- Chemical process vessels
- General process industry tanks and vessels
- Gauge glass installations requiring cleaning access
- Applications requiring union, rigid, or stuffing box gauge connections
- ASME service configurations, when properly selected
Documents
Manufacturer Info
Penberthy is a trusted process instrumentation manufacturer known for direct reading liquid level gauges, flat glass gauges, gaugecocks, and related accessories. Its products support petroleum, chemical, natural gas, and general process applications where reliable visual level indication is required.
Website: https://www.penberthyprocess.com/
