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Phone: 847-356-0566   Fax: 847-356-0747      E-Mail:

Back to Warren Controls Products

Warren Controls Regulators & Controls

The Next Step in Pneumatic Control

      Merlin Pressure Controller     

Merlin Pneumatic Control DevicePressure Regulating and Back Pressure Sustaining Valves with an Integrated Pneumatic Pressure Controller

Spec & Tech Sheets
Merlin Pneumatic Control Device

Warren Pneumatic Control

Merlin Pneumatic Pressure Controller

Benefits & Features

The Next Step in Pneumatic Control

Don't be fooled by the simplicity or the low cost of the Merlin. This Pneumatic Control device has been proven rugged. Used by the Military since 1975; it has passed Navy Shock & Vibe testing. Suitable for a wide range of fluids and just about any harsh environment.

Optimal for pressure reduction or back pressure regulating.


Model 8351
  • CAPSULE: Phosphor bronze or NI -SPAN
  • CASE: Cast Aluminum
  • MOUNTING: Flush (panel) mounting, back connected
  • CONTROL ACTION: Direct Acting or Reverse Acting
  • AIR SUPPLY: 18 PSI (25 PSI Max)

Model 8351, Type 2

  • Same as Model 8351, except that it has an internal control point setting

Can have any failure mode!


Warren Monitrol     


Spec & Tech Sheets
   Warren PICV PN16


Warren Monitrol Control Valve

Benefits & Features

Monitrol is a turn-key fluid control system including a globe style control valve, a variety of built in sensors for Flow, Pressure and Temperature, a High Precision Electric Actuator, along with controller and an easy to use Touch Screen interface. Monitrol can manage up to three variables (sensors), simultaneously with its control logic. Flexibility allows the control logic in Monitrol to be bypassed if that is desired. A Building Management System can still maintain all control and just make use of the sensor information if that is desired. A full range of I/O signals, feedback and modbus TCP communications are standard.

Both segments include pressure balancing control elements of industrial quality for optimum control performance in the presence of high system pressures and ensuring long life.


  • District Cooling and District Energy
  • Municipal Zone Control
  • Heat Transfer Control Application
  • Control Applications with Flow Monitoring Requirement


  • Heat Transfer Control Application
  • Desuperheating
  • Network Pressure Control
  • Simple Temperature Control
  • Level Control
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All registered trademarks are fully acknowledged by: M&M Control Service, Inc.

M&M Control Service, Inc. does not represent or claim any affiliation, association, connection or approvals with or from any manufacturer unless stated. We fully acknowledge all trademarks and/or names which are pictured and/or listed throughout the M&M Control Service, Inc. Website.

(PowersTM, also known as, POWERS REGULATOR, MCC POWERS, POWERS-FIAT, POWERS PROCESS CONTROLS, CRANE POWERS and POWERS, a Watts Industries Company. The POWERS trademark is owned by Powers, A Division of Watts Water Technologies, Inc. M&M Control Service, Inc. Is a Stocking Distributor for PowersTM)

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