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FC - Pressure compensated variable flow control

FC - Pressure compensated variable flow control

Product catalog summary

Overview: The document provides detailed technical specifications and features of the Brand full range pressure compensating variable flow control valves, specifically models FC51, FCR51, and FC55. These valves are designed to manage fluid flow with precision, offering various configurations and options to suit different applications.

Features:

Diamond honed spool bore for consistent fit and low leakage.
Each valve is tested for shutoff, maximum flow, and pressure compensation.
Standard 3-port design for pressure compensated flow out of two ports.
Stainless steel rotary lever spool to prevent locking.
External seals to prevent contamination and locking.
Optional features include top port, 2-port design, 316 stainless steel spool, free reverse flow, and adjustable ball spring relief.

Specifications:

Rated for 3000 psi (207 bar).
Weight: 7-¾ lbs. (3.52 kg).
30-Micron filtration recommended.
Torque to turn side lever spool: 35 in*lbs with 3000 psi on EX Port.

Materials:

Cast iron body.
Heat-treated compensator spool.
Stainless steel rotary spool.
Buna N O’Rings (Standard).
Heat-treated free reverse check seat.

Functionality: The flow control valves operate by varying the orifice area as the lever is rotated, allowing fluid to pass through the compensator spool and out the controlled flow port. The flow is pressure compensated, ensuring smooth and constant output regardless of pressure changes.

Adjustable Ball Spring Reliefs: These allow for pressure compensated flow up to a set pressure, diverting excess flow to the EX port when the pressure exceeds the set limit. The reliefs are adjustable from 750 to 3000 psi.

Free Reverse Flow: This option allows flow to reverse from the EX or CF port to the inlet, primarily used for reversing cylinders and motors.

Model Codes: The document provides examples of model codes and a guide for creating model codes based on relief type, flow path, port size, and other specifications.

Flow and Pressure Information: Charts are provided to illustrate controlled flow versus dial plate settings, pressure drop versus flow, and pressure versus flow for different models and spring configurations.

Dimensional Data: Detailed dimensional data is provided for models FCB51, FC51, and FCR51, including measurements in inches and millimeters.

Catalog excerpts

FC - Pressure compensated variable flow control-1

FULL RANGE PRESSURE COMPENSATING VARIABLE FLOW CONTROL DIAMOND HONED SPOOL BORE provides consistent spool fit with low leakage. EVERY FC IS TESTED for shutoff, max. flow, and pressure compensation. STANDARD 3-PORT allows for pressure compensated flow out of two ports. STANDARD 416 STAINLESS STEEL rotary lever spool to prevent the spool from locking up. STANDARD SAE ORB COMPENSATOR PLUGS to eliminate external leakage from the compensator bore. EXTERNAL SEALS ON ROTARY SPOOL prevents contamination from locking up spool. OPTIONAL TOP PORT allows the customer to plumb their pipe directly in line with the inlet. OPTIONAL 2-PORT allows for pressure compensated flow out of one port. OPTIONAL 316 STAINLESS STEEL rotary spool provides highest corrosion resistance. OPTIONAL FREE REVERSE FLOW allows fluid to move from the CF (control flow) and EX (excess flow) port to the inlet. (Single reverse flow is also available) OPTIONAL ADJUSTABLE BALL SPRING RELIEF AND HIGH LIFT BALL SPRING RELIEF CF (control flow) port. • See flow chart for capacity. • Torque to turn side lever spool. • Cast Iron Body. • Heat Treated Compensator Spool. • Stainless Steel Rotary Spool. • Buna N O'Rings (Standard) • Heat Treated Free Reverse Check Seat.

Open the catalog to page 1

FC - Pressure compensated variable flow control-2

FC – GENERAL INFORMATION The Brand, full range pressure compensating variable flow control is designed so that the orifice area varies as the lever is rotated. Fluid travels past the variable orifice, through the compensator spool and then out the controlled flow port. Therefore the flow out of the CF port is proportional to the orifice area which can vary from closed to open. The sum of the controlled flow and the excess flow equals the inlet flow and as the controlled flow increases the excess flow decreases. Both outlet flows are pressure compensated with a spool that maintains a constant...

Open the catalog to page 2

FC - Pressure compensated variable flow control-3

FC FLOW & PRESSURE INFO: Pressure Drop vs. Flow for FC Series Flow (lpm) Controlled Flow vs. Dial Plate for FC Series 32 Dial Plate Number (0-10)

Open the catalog to page 3

FC - Pressure compensated variable flow control-4

DIMENSIONAL DATA: FCB51 AND FC51 DIMENSIONAL DATA (inches & [millimeters]): FCR51 AND FC51 DIMENSIONAL DATA (inches & [millimeters]):

Open the catalog to page 4

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