Dwyer Instruments SAV-STA1-NC | Angle seat valve | 1/2" NPT | 1-3/4" actuator dia.
The Dwyer SAV-STA1-NC is a pneumatically actuated, normally closed angle seat valve designed for reliable on/off process control. With a 1/2" NPT connection and compact 1-3/4" actuator, it provides positive pneumatic control for water, air, and applicable process media.
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Part Number: SAV-STA1-NC
The Dwyer SAV-STA1-NC is designed for demanding process applications requiring dependable pneumatic on/off control and fail-safe shutoff. It uses Dwyer's standard ST-body trim with NBR seals, making it suited to ambient-temperature water, air, and general process media.
Its normally closed configuration keeps the valve closed under normal, unpowered conditions and opens when pneumatic pressure is applied. When air pressure is removed, the valve closes, providing automatic shutoff at process points where fail-safe closure is required.
The angle-body design provides an efficient flow path and can reduce flow resistance and pressure drop compared with a standard globe valve of similar size. The pneumatic piston actuator supports reliable operation during frequent cycling, making the valve suitable for applications such as batching, washdown, and process interlocks.
The valve features stainless steel wetted parts with standard NBR seals. Its compact 1-3/4" actuator footprint also makes the SAV-STA1-NC practical for installation in existing skids, panels, and process equipment where space is limited.
For applications requiring a different temperature-service configuration, the Dwyer range also includes the SAV-BTA1-NC High-Temperature Angle Seat Valve, which has the same 1/2" NPT connection, 1-3/4" actuator, and normally closed configuration. Contact GeneralTech Shop to confirm the appropriate model for your application.
Key Benefits
- 1/2" NPT process connection
- Compact 1-3/4" pneumatic actuator
- Normally closed configuration for fail-safe shutoff
- Standard ST-body trim with NBR seals
- Suitable for ambient-temperature water, air, and applicable process media
- Angle-body design for efficient flow
- Reduced flow resistance compared with standard globe valve designs
- Stainless steel wetted parts
- Pneumatic piston actuator suitable for frequent cycling
- Compact footprint for flexible installation
Who This Product Is Best For
The Dwyer SAV-STA1-NC is suitable for process and utility engineers, industrial automation professionals, maintenance teams, and control contractors requiring a compact standard-trim pneumatic on/off valve for 1/2" NPT process lines.
It is particularly suitable for ambient-temperature water, air, and applicable process applications where fail-safe closure is required when pneumatic pressure is unavailable.
How to Use
- Install the SAV-STA1-NC in the process line using the 1/2" NPT connection.
- Connect the 1-3/4" pneumatic actuator to a suitable compressed-air supply.
- Confirm that the valve remains closed when pneumatic pressure is removed.
- Apply pneumatic pressure to open the valve.
- Cycle the valve to verify smooth and positive on/off operation.
- Verify the complete installation and service conditions before commissioning.
Frequently Asked Questions
What is the NPT size of the SAV-STA1-NC?
The valve has a 1/2" NPT connection.
What actuator diameter does the SAV-STA1-NC use?
The valve uses a 1-3/4" pneumatic actuator.
Is the SAV-STA1-NC normally open or normally closed?
The SAV-STA1-NC is normally closed (NC). It stays closed until pneumatic pressure is applied to open it.
What seal material does the SAV-STA1-NC use?
The SAV-STA1-NC uses standard NBR seals with the ST-body trim.
What applications suit the SAV-STA1-NC?
It is suitable for pneumatic on/off control in ambient-temperature water, air, and applicable process media, including batching, washdown, and process interlock applications.
What is the difference between the SAV-STA1-NC and SAV-BTA1-NC?
Both models have a 1/2" NPT connection, 1-3/4" actuator, and normally closed configuration. The SAV-STA1-NC uses the standard ST-body trim, while the SAV-BTA1-NC is the high-temperature version intended for applicable hot water or steam service.
Does GeneralTech Shop deliver the SAV-STA1-NC across the UAE?
Contact GeneralTech Shop at +971 6 5436933 to confirm availability and delivery timelines for your emirate.
Request a Quote
Ready to order the Dwyer SAV-STA1-NC Angle Seat Valve?
Contact Generaltechshop.ae for pricing, availability, and application assistance.
Phone: +971 6 5436933
