Interposed Modules Flow Controls, Independent Pressure, Shut-Offs

Product Overview

The ROSS Controls Interposed Modules are a family of sandwich-style functional accessories that mount between a base-mounted directional control valve and its ISO manifold or sub-base, extending valve station capability without external plumbing. Available for ISO 15407 W66 Series (Sizes 00 and 0) and ISO 5599-1/5599-2 W60/W64/W65 Series (Sizes 1, 2, and 3), these modules deliver four primary functions: flow control, independent pressure supply, exhaust routing, and manual shut-off.

Interposed flow control modules use needle valves to independently throttle exhaust air from each actuator port (Ports 3 and 5 for 5-way valves), controlling the extension and retraction speeds of double-acting pneumatic cylinders without external meter-out flow control circuits. Separate needle adjustments per port allow asymmetric speed tuning. Adjustment screws are located on the Port 12 end for convenient access on assembled manifolds.

Independent pressure plate and air supply modules provide an isolated pressure supply to a single valve station within a manifold assembly, routing a different supply pressure to that station's inlet without physically separating the manifold. This is used when one cylinder in a multi-cylinder manifold requires a different supply pressure than the remaining stations, a common requirement in assembly, press, and tooling machine applications.

Interposed shut-off modules (1871B91 for ISO 5599-1 Size 1) use a quarter-turn manual actuator to isolate all ports of a single valve station, including the pilot, enabling that station to be taken off service for valve replacement or maintenance without shutting down the entire manifold assembly. For machine builders and system integrators designing ISO manifold systems, Interposed Modules provide a complete toolkit for per-station functional optimization within a standardized footprint.

Key Engineering Features

• Interposed Flow Control - Needle valve modules independently throttle exhaust air at Ports 3 and 5 to control double-acting cylinder extend and retract speeds. Separate adjustment for each port enables asymmetric speed profiles without external flow controls.
• Independent Pressure Supply Plate - Provides a dedicated supply inlet to one valve station within the manifold, isolating that station's supply from the common manifold pressure galley, enabling per-station pressure differentiation without manifold separation.
• Interposed Supply and Exhaust Modules - Dedicated supply (pressure) and exhaust path modules for ISO 15407 W66 Series stations (RPS562600P/RPS552600P for supply; RPS562700P/RPS552700P for exhaust), allowing individual valve pressure or exhaust routing within manifold configurations.
• Interposed Shut-Off Module - Quarter-turn manual actuator (1871B91 for ISO 5599-1 Size 1) isolates all ports of a single valve station, including the pilot port, enabling safe valve replacement or service in that station without stopping the manifold or adjacent stations.
• ISO 15407 and ISO 5599 Coverage - Module families available for ISO 15407-1/2 W66 Series (Sizes 00 and 0) and ISO 5599-1 W60/W64 and ISO 5599-2 W65 Series (Sizes 1, 2, and 3), covering the full ROSS base-mounted valve product range.
• Sandwich Construction, No External Plumbing - All interposed modules mount between the valve body and the manifold or sub-base using the valve mounting hardware. No external tubing, brackets, or fittings are required, keeping the manifold assembly compact and clean.
• Compatible with Interposed Regulators - Interposed flow control modules can be stacked with common port interposed regulators on the same manifold station. Flow control must be positioned between the manifold and the regulator in the stack.
• Accessible Adjustment Location - All adjustment screws (needle valves on flow control modules) are located on the Port 12 end of the unit for convenient access on assembled manifolds without requiring valve removal.

Technical Specifications

General Specifications

Certifications & Compliance

Typical Applications & Industries

Automotive Assembly and Body Shop

• Per-station speed control on welding fixture clamp cylinders using interposed flow control modules, allowing independent extend and retract speed tuning for each clamp axis on a multi-station manifold without external meter-out circuits.
• Isolated pressure supply for a single high-force press cylinder within a shared multi-station manifold using an independent pressure plate, while all other stations in the manifold operate at standard line pressure.
• Quarterly valve maintenance on high-uptime body shop manifolds using interposed shut-off modules to isolate individual stations for valve replacement during production without requiring a full line shutdown.

Packaging and Converting Machinery

• Independent speed control on bag and pouch sealing jaw cylinders using interposed flow controls, enabling separate tuning of jaw closing speed and jaw opening speed to optimize dwell time and seal quality.
• Per-station pressure differentiation on multi-valve carton erecting manifolds, providing full line pressure for carton erecting stations and reduced pressure for gentle folding stations from the same manifold assembly.
• Interposed exhaust modules for routing exhaust air from specific valve stations in sanitary packaging environments where atmospheric exhaust to the manifold area must be avoided.

Machine Tool and Metalworking

• Controlled clamping speed and unclamping speed on modular work-holding fixture valves using interposed flow controls, tuning clamp descent rate to prevent part shift while keeping cycle time short.
• Isolated supply pressure for hydraulic intensifier drive cylinders on combination hydraulic-pneumatic circuits sharing a common ISO manifold with standard pneumatic actuators.

Semiconductor and Electronics Manufacturing

• Low-speed controlled actuation of precision gripper and pick-and-place actuators using interposed flow control modules on ISO 15407 W66 Size 00 manifolds, providing needle valve speed tuning within the manifold envelope without external fittings.
• Independent low-pressure supply for delicate component handling actuators on shared manifold assemblies where neighboring valve stations operate at higher supply pressures for part reject and eject functions.

Food Processing and Beverage

• Speed-controlled conveyor stop gate and diverter actuation using interposed flow controls on ISO 5599-1 W60 Series manifolds, providing gradual gate engagement and retraction to prevent product spillage at high throughput rates.
• Isolated supply for wash-down compatible actuators operating at different pressures than standard process actuators in the same manifold zone, using independent pressure plate modules.

General Industrial and OEM Machine Building

• Manifold maintenance enablement in production environments where machine uptime requirements prohibit full pneumatic circuit shutdown, using interposed shut-off modules to isolate individual failed valve stations for replacement.
• Compact per-station flow control on multi-axis gantry and slide systems where space constraints prevent installation of external flow control valves on individual actuator lines, using interposed modules within the ISO manifold footprint.

Ordering and Model Number Configuration

Interposed Modules are ordered by selecting the appropriate model number for the module type, valve series, and ISO size. Flow control, pressure plate, supply/exhaust, and shut-off modules are ordered separately.

Interposed flow control modules for ISO 15407-1/2 W66 Series: Size 00 = RPS5635P; Size 0 = RPS5535P.

Interposed flow control modules for ISO 5599-2 W65 Series: Size 1 = RPS4035CP; Size 2 = RPS4135CP; Size 3 = RPS4235CP.

Interposed flow control modules for ISO 5599-1 W60 Series: Size 1 = 701B77; Size 2 = 702B77; Size 3 = 722B77. Available only for W60 Series valves.

Interposed flow control is NOT a shut-off device. It is not bubble tight when needle valves are fully closed.

For ISO 15407 supply and exhaust modules: specify NPT or BSPP thread type as applicable.

Independent pressure plates for ISO 5599-1 W60/W64 Series: Size 1 = 703K77 (1/4 inch port); Size 2 = 692K77 (3/8 inch port); Size 3 = 715K77 (1/2 inch port).

Interposed shut-off for ISO 5599-1 W60/W64 Size 1 = 1871B91. For Sizes 2 and 3, contact ROSS Controls.

When stacking flow control with common port interposed regulator, position flow control between manifold and regulator. Cannot stack with independent port regulator.

Contact ROSS Controls at (800) 438-7677 for current model number availability, stacking configurations, and compatibility verification.

Related Products & Accessories

• Series 98 Interposed Regulators - Sandwich-style pressure regulators for per-station independent pressure control on ISO valve manifolds. https://www.rosscontrols.com/en/series/98-interposed-regulators
• ISO 5599-2 W65 Series Valves - ISO 5599-2 Size 1, 2, and 3 base-mounted spool and sleeve valves, primary host platform for RPS4035CP/4135CP/4235CP flow control modules. https://www.rosscontrols.com/en/series/243-iso-5599-2-w65-series
• ISO 15407-1 W66 Series Valves - ISO 15407-1 Size 00 and 0 base-mounted valves compatible with RPS5635P and RPS5535P flow control modules. https://www.rosscontrols.com/en/series
• Series 100 Manifold Blanking Kit - Blank station kits for unused manifold positions. https://www.rosscontrols.com/en/series/100-manifold-blanking-kit
• Series 101 Blocking Disc - Port isolation discs for ISO manifold stations. https://www.rosscontrols.com/en/series/101-blocking-disc
• Series 102 Base Size Transition Plate - Transition plates for mixing different ISO sizes in the same manifold assembly. https://www.rosscontrols.com/en/series/102-base-size-transition-plate

Frequently Asked Questions (FAQ)

Q: What is the difference between an interposed flow control and an external meter-out flow control valve?

A: An interposed flow control is a sandwich module that installs between the directional control valve and its manifold station, using the valve mounting hardware. It throttles exhaust air at Ports 3 and 5 within the manifold footprint without any external tubing. An external meter-out flow control valve is mounted in the actuator port lines outside the manifold and requires separate fittings, tubing, and mounting. The interposed design is more compact and eliminates external plumbing but has a lower flow adjustment range than larger external valves.

Q: Can interposed flow controls be used to shut off air flow completely?

A: No. Interposed flow control modules are not shut-off devices. They are not bubble tight when the needle valves are fully turned down. For station isolation, use an interposed shut-off module (1871B91 for ISO 5599-1 Size 1) or consult ROSS for shut-off options on other platforms.

Q: Are both cylinder directions controlled by the same flow control module?

A: Yes. A single interposed flow control module provides separate needle valve adjustments for both exhaust paths at the same station - Port 3 exhaust (controlling cylinder extend speed) and Port 5 exhaust (controlling cylinder retract speed). Both adjustment screws are located on the Port 12 end of the unit.

Q: What is an independent pressure plate used for?

A: An independent pressure plate isolates one valve station in a manifold from the common supply galley and provides a separate inlet port on the edge of the plate for connecting a different supply pressure. This allows one cylinder in the manifold assembly to operate at a different pressure than the remaining stations without modifying the manifold body or adding external regulators.

Q: What is the difference between an independent pressure plate and an interposed pressure regulator?

A: An independent pressure plate completely isolates the station supply from the manifold galley and requires connection to a separate external supply line at the plate inlet port. An interposed pressure regulator remains connected to the manifold supply galley but regulates the actuator port pressure downstream of the valve, using a built-in regulator cartridge. The regulator is the more self-contained solution; the independent pressure plate provides absolute supply isolation and allows connection to an entirely different pressure source.

Q: Which interposed shut-off model covers ISO 5599-1 Size 2 and Size 3 applications?

A: Model 1871B91 covers ISO 5599-1 W60/W64 Size 1. For Size 2 and Size 3 shut-off modules, contact ROSS Controls directly for availability and part number information.

Q: Can I stack an interposed flow control module with an interposed regulator on the same manifold station?

A: Yes, a flow control module and a common port interposed regulator can be stacked on the same station. The flow control module must be positioned between the manifold or sub-base and the regulator. Stacking with independent port regulators requires verification with ROSS; not all combinations are compatible.

Q: How do I access the needle valve adjustment screws on an assembled manifold?

A: All needle valve adjustment screws on interposed flow control modules are located on the Port 12 end of the unit. This standardized access point allows adjustments to be made with the manifold fully assembled and in service, typically using a hex key or screwdriver appropriate to the needle valve style on the applicable module. Partially loosen the locknut before adjusting, then re-tighten after setting.

Q: Are Interposed Modules compatible with ISO 5599-1 W64 Series valves?

A: Yes. Interposed Modules for ISO 5599-1 platform are compatible with both W60 and W64 Series valves, which share the same ISO 5599-1 mounting interface. Confirm the specific module model number against the valve series catalog page for your ISO size.

Q: What are interposed supply and exhaust modules used for on ISO 15407 W66 Series manifolds?

A: Interposed supply modules (RPS562600P for Size 00, RPS552600P for Size 0) provide a dedicated pressure path to an individual valve station within the manifold without using the common galley. Interposed exhaust modules (RPS562700P for Size 00, RPS552700P for Size 0) provide a dedicated exhaust path. These are used when a specific station needs isolated supply or exhaust routing, such as for vacuum service, different fluid circuits, or separate exhaust management. Quantity 1 is required per valve station.

Q: Do interposed modules affect the valve mounting hardware or bolt pattern?

A: Interposed flow control modules use their own studs, so the valve uses standard bolts for mounting through the flow control module to the manifold. For supply, exhaust, and pressure plate modules, the valve mounting hardware passes through the module to the manifold. Always follow the torque specifications in the applicable valve series installation instruction when assembling interposed modules.

Q: What is the price range for Interposed Modules?

A: Interposed Modules range from approximately $70.25 (model 1371N77) to $173.00 (model 1373N77) based on available variant pricing. Contact ROSS Controls at (800) 438-7677 or visit rosscontrols.com for current pricing and availability on all module types and sizes.

Installation & Maintenance Guidelines

• Before installation, lock out and tag out all energy sources and exhaust all downstream pneumatic pressure to zero per OSHA 1910.147.
• The interposed flow control module mounts using its own studs, which means the valve uses standard bolts for mounting to the manifold through the module. Follow the installation sheet for the applicable valve series.
• Both needle valve adjustment screws on flow control modules are located on the Port 12 end. Back the needle valves out fully (counterclockwise) before initial pressurization, then gradually close to set the desired speed.
• When stacking flow control with an interposed regulator, the flow control module must be positioned between the manifold/sub-base and the regulator. The regulator mounts on top of the flow control module.
• For the independent pressure plate (ISO 5599-1 Sizes 1-3), connect the independent supply to the inlet port on the end face of the plate. Ensure the isolation gasket between the plate and manifold is correctly seated to prevent cross-contamination with the manifold supply galley.
• For interposed shut-off modules, verify the quarter-turn rotation aligns with the OPEN and CLOSED positions indicated on the module body before installation.
• After installation of supply or exhaust modules on ISO 15407 platforms, torque mounting bolts to specifications in the W66 Series installation instruction.
• Verify that the flow control needle valves can be adjusted through their full range and that both ports respond independently before returning the machine to service.

Warranty & Global Support

ROSS Controls provides a one-year warranty on all products, covering defects in material and workmanship from date of purchase.

Global technical support is available through ROSS offices in the USA, Canada, Brazil, Germany, France, United Kingdom, India, China, and Japan.

Contact ROSS Controls USA Customer Service at 1-800-GET-ROSS or Technical Service at 1-888-TEK-ROSS.

For complete compatibility, stacking configurations, and model selection, visit rosscontrols.com or contact ROSS Controls at (800) 438-7677.