Dwyer Instruments SAV-STF2-NC | Angle seat valve | 2" NPT | 2-1/2" actuator dia.
Genuine Dwyer SAV-STF2-NC angle seat valve from General Tech Services LLC, Saudi Arabia, with free Saudi Arabia shipping available.
Part No. SAV-STF2-NC
Product Overview
The Dwyer SAV-STF2-NC is a compact, externally piloted stainless steel angle seat valve with 2" NPT female connections, a normally closed configuration and a 2-1/2" pneumatic actuator. It uses a single-acting actuator with mechanical spring return, keeping the valve closed until pilot air is applied to open it.
The valve is designed for compatible gases, liquids and steam. Its body, plug and stem are manufactured from 316L stainless steel, with a PTFE seat and seal and an FKM stem O-ring. It provides ANSI Class VI shut-off and has a specified temperature range of −10 to 180 °C (14 to 356 °F).
In the normally closed configuration, the spring holds the valve shut when pilot air is removed, providing fail-safe closed operation. Dwyer notes that applicable bi-directional normally closed configurations include an anti-water-hammer design for liquids flowing under the seat.
An integral heat sink helps dissipate heat and protect the polyamide actuator during elevated-temperature service. The valve can be mounted in any position, while the actuator housing rotates through 360° to allow convenient positioning of the pilot ports.
A standard visual indicator provides a quick indication of valve position. The listed minimum pilot pressure is 60 psi, while the maximum steam pressure is 150 psi. Confirm the maximum line-pressure rating for the exact valve and actuator configuration before ordering.
Comparing sizes or materials? See the Dwyer SAV-STE3-NC.
Key Benefits
- 2" NPT female connections for process-line installation
- 316L stainless steel body, plug and stem
- PTFE seat and seal with FKM stem O-ring
- Normally closed operation with fail-safe spring return
- ANSI Class VI shut-off
- Suitable for compatible gases, liquids and steam
- Operating temperature range of −10 to 180 °C
- Mounts in any position with a 360° rotating actuator housing
- Visual indicator for quick open/closed status checking
- Integral heat sink helps protect the actuator during elevated-temperature service
Need pricing or lead time? Call +966 569 289 544 for a fast quote.
Who This Product Is Best For
- Process plants switching water, steam, oils or compatible gases
- Food, beverage and chemical lines requiring stainless steel wetted components
- OEM machine builders specifying compact pneumatic process valves
- Maintenance teams replacing compatible normally closed angle seat valves
- Industrial process systems requiring automatic closure when pilot air is lost
How to Install & Use It
- Install the valve in the process line according to the flow direction shown on the valve body.
- Mount the valve in a suitable orientation for the application.
- Rotate the actuator housing through its 360° range to position the pilot ports conveniently.
- Connect clean pilot air at 60 psi minimum, directly or through a compatible solenoid valve.
- Apply pilot air to open the normally closed valve.
- Check the visual position indicator to verify correct valve operation.
- Inspect the connections and seals for leaks before placing the system into service.
Frequently Asked Questions
What size is the Dwyer SAV-STF2-NC?
It has 2" NPT female connections and a 2-1/2" actuator.
Is it normally open or normally closed?
It is normally closed. The spring holds the valve shut, while pilot air is applied to open it.
What is the valve body made of?
The body, plug and stem are made from 316L stainless steel. The valve uses a PTFE seat and seal and an FKM stem O-ring.
What media can it handle?
It is intended for compatible gases, liquids and steam. Media compatibility should be confirmed against the 316L stainless steel, PTFE and FKM wetted materials.
What are the pressure ratings?
The supplied information specifies a maximum steam pressure of 150 psi and a minimum pilot pressure of 60 psi. Confirm the maximum line-pressure rating for the exact 2" valve and actuator configuration before ordering.
What is the operating temperature range?
The specified temperature range is −10 to 180 °C (14 to 356 °F).
Can it be mounted in any orientation?
Yes. The valve can be mounted in any position, and the actuator housing rotates through 360° for convenient pilot-port positioning.
How does the normally closed configuration operate?
The mechanical spring holds the valve closed when pilot air is removed. Applying pilot air moves the actuator and opens the valve.
Does the valve help reduce water hammer?
The supplied information describes an anti-water-hammer design for applicable bi-directional normally closed configurations where liquids flow under the seat.
Should I choose the SAV-STF2-NC or SAV-STE3-NC?
The selection depends on factors such as line size, body material and required fail-safe position. The SAV-STF2-NC is a 2" NPT normally closed stainless steel valve. Provide your media, pressure and temperature requirements so we can confirm the appropriate model.
Is delivery available across Saudi Arabia?
Yes. Free Saudi Arabia shipping is available. Call +966 569 289 544 for pricing and lead time.
Request a Quote Today
For pricing or to place an order, contact General Tech Services LLC.
Call +966 569 289 544 | www.generaltechshop.sa
