Series-SAV-BT

Supported Applications

The Series SAV-BT Angle Seat Valve is a compact, low-cost actuated valve package built for controlling gases and liquids compatible with its wetted materials. It is a pneumatic, externally piloted piston valve that can be operated with air or liquids, making it a versatile shutoff and control element across process, utility, and OEM machine-building applications.

With a bronze valve body, an AISI 316L stainless steel plug and stem, a PTFE seat and seal, and a fluoroelastomer stem O-ring, the valve suits duties that demand corrosion resistance and broad media compatibility. The angle-seat geometry supports steam service as well as clean air, water, and inert-gas media, and the valve delivers bubble-tight shutoff that meets ANSI Class VI flow leakage.

• Steam and hot-media control, with process media temperatures up to 180°C.
• Failsafe on/off duty, using a single-acting actuator with a mechanical spring so the valve returns to its rest position if pilot power is lost.
• Waterhammer mitigation in liquid lines, where normally open (NO) variants can be applied to prevent waterhammer on valve closure.
• Automated skids and solenoid-piloted systems, using the NAMUR solenoid mounting pad and optional Series PV Solenoid Pilot Valves for 120 VAC operation.

Pilot media for the actuator can be air, water, or inert gas, giving flexibility when integrating the valve into existing pneumatic control loops.

Operating Conditions & Performance

Series SAV-BT valves are offered in line sizes from 1/2" to 2" NPT, with National Pipe Thread process connections throughout the range. The valve body handles process media at temperatures up to 180°C while maintaining a tight, ANSI Class VI shutoff.

Flow capacity scales with valve size, with rated Cv values spanning from 6.61 on the smallest 1/2" body up to 77.72 on the largest 2" body, so a single series can serve both low- and high-flow points in a system.

The actuator is a piston / pneumatic spring design with a NAMUR solenoid mounting pad for pilot connections. Line pressure, steam pressure, and the minimum and maximum pilot pressure required to stroke each valve are defined in the manufacturer's Line and Pilot Pressure Chart, and depend on valve size, actuator diameter, and configuration. Because these limits vary by model, the appropriate values should be taken from that chart for the specific variant selected.

Flow direction follows the valve configuration: normally closed (NC) variants are piloted Overseat, while normally open (NO) variants are piloted Underseat.

Configuration Options

All Series SAV-BT models share the same bronze-bodied, pneumatically actuated angle-seat platform, but they differ along four axes that let you match the valve to the application.

Valve size and port connection

Port connections range across 1/2", 3/4", 1", 1-1/4", 1-1/2", and 2" NPT. Larger ports deliver higher flow capacity, which is why Cv increases with body size.

Actuator diameter

The valve is fitted with one of several actuator sizes — 2.76", 3.32", 4.58", or 5.54" diameter — with larger actuators generally paired to larger bodies and higher-pressure duties to develop the seating force needed for tight shutoff.

Normally closed vs. normally open

Each valve is supplied as either normally closed (NC) or normally open (NO). The single-acting spring returns the valve to that default state on loss of pilot pressure, providing failsafe behavior; NC units seal Overseat, while NO units are arranged Underseat and can be used to prevent waterhammer on closure in liquid service.

Model code structure

Model numbers encode these choices in sequence — series, port connection, actuator diameter, and normally closed/open — so a code such as SAV-BTA1-NC can be read directly as a specific size, actuator, and configuration.

Key Product Differences

The Series SAV-BT lineup uses a bronze valve body and is available in the following models, each defined by its port connection and normally closed (NC) or normally open (NO) configuration:

• SAV-BTA1-NC — 1/2" NPT, normally closed
• SAV-BTA2-NO — 1/2" NPT, normally open
• SAV-BTB1-NC — 3/4" NPT, normally closed
• SAV-BTB2-NO — 3/4" NPT, normally open
• SAV-BTC1-NC — 1" NPT, normally closed
• SAV-BTC3-NO — 1" NPT, normally open
• SAV-BTD3-NC — 1-1/4" NPT, normally closed
• SAV-BTE2-NC — 1-1/2" NPT, normally closed
• SAV-BTE3-NC — 1-1/2" NPT, normally closed
• SAV-BTE3-NO — 1-1/2" NPT, normally open
• SAV-BTF3-NC — 2" NPT, normally closed
• SAV-BTF3-NO — 2" NPT, normally open

For AISI 316L stainless steel bodies with the same actuation and configuration options, the companion Series SAV-ST covers the corrosion-resistant equivalents.