95 Series Inline Directional Control Valves – Installation & Operating Instructions

Overview

The ROSS Controls® 95 Series is a premium-quality resilient-seal spool directional control valve designed for inline or manifold mounting. Manufactured by ROSS Controls – with over 100 years of fluid power expertise since its founding in 1921 – the 95 Series provides reliable directional control in a compact, versatile package. Available configurations include double solenoid, pressure-controlled, and NAMUR interface solenoid-controlled variants.

The 95 Series features a resilient seal spool construction, which provides low internal leakage and excellent contamination tolerance. The valve is suitable for both inline installation and manifold mounting, giving system designers flexibility in how valve banks are arranged. NAMUR interface solenoid models enable direct mounting of solenoids without a separate pilot valve, reducing installation complexity.

ROSS Controls notes that ROSS does not recommend disassembling 95 Series valves for cleaning or repair. Service should be performed with ROSS service kits or through the ROSS factory repair center. Contact ROSS at 1-800-GET-ROSS or visit www.rosscontrols.com.

Key Features

Resilient Seal Spool Construction

The 95 Series uses resilient seal spool construction, combining the advantages of a spool valve's smooth directional control with the low-leakage properties of resilient (elastomeric) seals. This construction provides reliable performance with filtered air and is particularly effective in applications where low internal leakage is important for system efficiency.

Inline and Manifold Mounting Options

The 95 Series can be mounted inline (direct pipe connection) or on a manifold base, providing maximum installation flexibility. Manifold mounting enables compact valve bank configurations that reduce tubing and fitting requirements, lower pressure drops in multi-actuator circuits, and simplify system maintenance through centralized valve access.

NAMUR Interface Solenoid Option

The NAMUR interface option allows direct mounting of a solenoid onto the 95 Series valve body without a separate pilot valve stage. This simplifies installation, reduces the valve assembly footprint, and eliminates one potential failure point. Electrical connectors for NAMUR-interface models follow the C1 Micro-Mini format for 1/8-inch port sizes and CN2 Industrial Form B (DIN 43650) for 1/4, 3/8, and 1/2-inch port sizes.

Pushbutton Manual Override

95 Series valves include a pushbutton, non-locking manual override that allows manual actuation of the valve during testing, commissioning, and troubleshooting without requiring electrical energization of the solenoid. This non-locking design ensures the valve returns to its solenoid-commanded position when the button is released.

Technical Specifications

The following specifications are from the official ROSS Controls 95 Series Directional Valves Installation Instructions (Doc ID 70, Form SS095x):

Construction: Spool (resilient seal)
Mounting Type: In-line or manifold mounted
Flow Media: Filtered air
Manual Override: Pushbutton, non-locking
Pressure Controlled – Ambient/Media Temperature: 41° to 140°F (5° to 60°C)
Pressure Controlled – Inlet Pressure: 30 to 150 psi (2 to 10 bar)
Pressure Controlled – Pilot Pressure: Must be equal to or greater than inlet pressure
Solenoid Pilot – Standard Voltages: 24 volts DC; 110 volts AC, 50/60 Hz
Solenoid Pilot – Power Consumption: 3.5 VA holding on 50/60 Hz; 2.5 watts on DC
Solenoid Pilot – Ambient/Media Temperature: 41° to 140°F (5° to 60°C)
Solenoid Pilot – Inlet Pressure: 22.5 to 150 psig (1.5 to 10 bar)
C1 Micro-Mini connector: 1/8-inch port size
CN2 Industrial Form B DIN 43650 connector: 1/4, 3/8, 1/2-inch port sizes

Applications

Compact Valve Banks in Manifold Systems

The 95 Series excels in manifold-mounted configurations where multiple valves serve adjacent actuators in a single consolidated bank. This is particularly valuable in packaging machinery, assembly automation, and process control systems where minimizing pneumatic plumbing and maximizing serviceability are priorities.

Hazardous Location NAMUR Installations

The NAMUR interface solenoid option on the 95 Series simplifies deployment in hazardous locations where NAMUR-compatible explosion-proof solenoids are required. By mounting the NAMUR solenoid directly on the valve body, the installation avoids the need for a separate pilot valve and the associated additional connection points.

Safety and Compliance Standards

All installation and maintenance must be performed by trained pneumatic equipment personnel. Before service, disconnect electrical supply, shut off air supply, and exhaust the system. A 5-micron rated air filter is strongly recommended. The filter bowl should be drained regularly; use an automatic drain if manual access is difficult.

ROSS does not recommend disassembling 95 Series valves for cleaning or repair. If the valve requires internal cleaning or servicing, use ROSS service kits or contact ROSS for factory repair center service.

Installation and Setup Guide

Mounting Mode Selection

Determine whether the 95 Series valve will be installed inline or manifold mounted. For manifold mounting, ensure the manifold base is correctly aligned and all base ports are identified. For inline mounting, ensure pipe sizes at inlet (Port 1) and outlets (Ports 2 and 4) are adequate and free of restriction.

Pilot Supply Connection

For solenoid-controlled models using internal pilot, plug port 14 in the base to prevent pilot air loss. If external pilot supply is required (inlet pressure below minimum pilot pressure), connect the external pilot supply to port 14 in the base. For pressure-controlled models, connect pilot lines to ports 14 (single remote) or 12 and 14 (double remote) per specifications.

Pipe Installation

Engage pipe one turn in ports, apply pipe thread sealant to male threads (not tape), then tighten. This procedure prevents sealant from entering valve internals. Do not use chlorinated solvents for valve cleaning – these damage seals. For the spool-and-sleeve assembly, use only non-residue solvents.

Why Choose ROSS Controls

ROSS Controls has over 100 years of engineering expertise in fluid power. The 95 Series provides a versatile, low-leakage directional control solution in compact inline and manifold form factors. Combined with NAMUR interface options and ROSS's comprehensive service kit program, the 95 Series delivers long-term reliability and flexibility.

Contact ROSS at 1-800-GET-ROSS or www.rosscontrols.com.

Download This Document

The official ROSS Controls 95 Series Directional Valves Installation Instructions (Doc ID 70, SS095x) can be downloaded from the ROSS Controls document library.

PDF Download URL: https://ross-admin-global-us-east.s3.amazonaws.com/production/uploads/document_language_file/file/70/ROSS_95_Series_Directional_Valves_Installation_Instructions_SS095x.pdf

Frequently Asked Questions

Q: Can the 95 Series be disassembled for cleaning?

A: ROSS does not recommend disassembling 95 Series valves for cleaning or repair. If service is required, use ROSS service kits or contact ROSS Controls for factory repair center service.

Q: What is the power consumption of 95 Series solenoid models?

A: Solenoid pilot 95 Series valves consume 3.5 VA holding on 50/60 Hz AC and 2.5 watts on DC. Standard voltages are 24 VDC and 110 VAC at 50/60 Hz.

Q: What is the minimum inlet pressure for 95 Series solenoid pilot models?

A: Solenoid pilot 95 Series models require an inlet pressure of 22.5 to 150 psig (1.5 to 10 bar). Pressure-controlled models require 30 to 150 psi (2 to 10 bar).

Q: What electrical connector types are used on 95 Series NAMUR solenoid models?

A: C1 Micro-Mini connectors are used on 1/8-inch port size models. CN2 Industrial Form B (DIN 43650) connectors are used on 1/4, 3/8, and 1/2-inch port size models.

Q: Does the 95 Series have a manual override?

A: Yes. All 95 Series valves include a pushbutton, non-locking manual override for manual actuation during testing and commissioning. The valve returns to its solenoid-commanded position when the override button is released.

Q: What temperature range do 95 Series valves support?

A: Both solenoid pilot and pressure-controlled 95 Series valves support ambient and media temperatures of 41° to 140°F (5° to 60°C).

Q: How is the external pilot supply connected on the 95 Series?

A: For solenoid-controlled models, pressure is normally supplied from the inlet port (internal pilot) – plug port 14 in the base. If an external pilot supply is needed, connect it to port 14 in the base after confirming port 14 is not plugged.

Q: What is the difference between inline and manifold mounting for the 95 Series?

A: Inline mounting connects the 95 Series valve directly into a pipe run using threaded or push-in fittings. Manifold mounting uses a sub-base that consolidates multiple valves into a single assembly, reducing plumbing and improving access. Both options are available with the 95 Series.