Ingersoll Rand Screw Compressor Blow Down Valve with Solenoid Valve

Ingersoll Rand Screw Compressor Blow Down Valve with Solenoid (1SV / 2SV / 3SV Type)

Product Description

The Blow Down Valve with Solenoid Valve used in Ingersoll Rand rotary screw air compressors is an essential unloading and pressure-release component. Depending on compressor model, capacity, and control system, Ingersoll Rand uses 1SV, 2SV, or 3SV solenoid valve configurations to control blowdown and unloading operations.

This valve system safely releases trapped air pressure during unload or shutdown, ensuring smooth restarts, reduced motor load, and long compressor life.

Solenoid Valve Types Used in Ingersoll Rand Compressors

1SV (Single Solenoid Valve System)

Single solenoid controls the blowdown function directly

Used in small to medium HP screw compressors

Simple and reliable unloading system

Common in basic or older fixed-speed models

Also known as:

Single SV Blowdown Valve, Direct Acting Blowdown Solenoid

2SV (Dual Solenoid Valve System)

Two solenoid valves used for unloading + blowdown control

One solenoid manages inlet/unloader, second handles pressure release

Better control during load / unload cycles

Common in medium HP compressors and standard industrial applications

Also known as:

2SV Blowdown System, Dual Solenoid Unloader Valve

3SV (Triple Solenoid Valve System)

Three solenoid valves work together for precise pressure and unloading control

Used in advanced control systems and Intellisys-based compressors

Improves energy efficiency and operational stability

Common in higher HP or controller-based IR screw compressors

Also known as:

3SV Unloading System, Multi-Solenoid Blowdown Valve Assembly

Key Functions

Releases internal air pressure during unload or stop condition

Assists in compressor unloading and smooth motor start

Prevents back pressure on airend and separator

Reduces electrical and mechanical stress

Improves overall compressor efficiency and safety

Technical Variations

Solenoid coil options: 24V DC / 110V AC / 230V AC

Normally Open / Pilot Operated configurations

Different port sizes and mounting styles (model dependent)

Compatible Ingersoll Rand Compressor Series

UP Series

EP Series

SSR / RS Series

R-Series

IRN / Intellisys controlled models

Why Buy from Royal Air Component

✔ High-quality compressor spare parts

✔ Suitable for OEM replacement and service use

✔ Expert guidance for correct 1SV / 2SV / 3SV selection

✔ Trusted supplier for Ingersoll Rand compressor spares