Flow Control Valves

FD50-44 — Flow Divider / Combiner, Multi-Function, High Pressure
  Selection guide - similar valves.
  Application and Selection Notes.
  PDF file of this page.
  STP file for FD50-44.
  Request a quote.

FD50-44 Valve

SYMBOL:
FD10-40 Valve symbol
DESCRIPTION
A heavy duty, multifunction, screw-in, cartridge-style, spool-type flow divider/combiner for
use in high presssure applications.

OPERATION
In the dividing mode, the FD50-44 will divert input flow from port 3 to ports 2 and 4, based
on the ratio specified. This valve provides a highly accurate, pressure compensated division
of inlet flow or combination of return flow regardless of system operating pressure. When the
flow direction is reversed, the valve will combine flows from ports 2 and 4 to port 3.

FEATURES
• Choice of flow ranges.
• Quiet, modulated response.
• Wide operating flow range.
• Accurate division or combination of flow.
• Optional corrosion-resistant plating.
• Industry-common cavity.

RATINGS
Operating Pressure: 345 bar (5000 psi) maximum
Burst Pressure: 1034 bar (15000 psi) at maximum inlet flow
Flow Range Options:
  Model Code 99: 50:50 ratio; rated @ 2.0-7.0 lpm (0.5-1.8 gpm) input
  Model Code 11: 50:50 ratio; rated @ 2.5–9.5 lpm (0.7–2.5 gpm) input
  Model Code 22: 50:50 ratio; rated @ 4–19 lpm (1.0–5.0 gpm) input
  Model Code 44: 50:50 ratio; rated @ 7.5–38 lpm (2.0–10.0 gpm) input
Synchronizing Flow: Approximately 10% of maximum inlet flow rate
Flow Accuracy: 5% of inlet flow at maximum flow rate; 10% of inlet flow at minimum flow rate
Temperature: -40° to 100°C (-40° to 212°F) with Buna N seals;
   -26° to 204°C (-15° to 400°F) with fluorocarbon seals;
   -54° to 107°C (-65°F to 224°F) with polyurethane or urethane seals
Filtration: See page 9.010.1
Fluids: Mineral-based or synthetics with lubricating properties at viscosities of
   7.4 to 420 cSt (50 to 2000 sus); See Temperature and Oil Viscosity, page 9.060.1
Installation: No restrictions; See page 9.020.1
Cavity: VC10-4; See page 9.110.1_4w
Cavity Tool: CT10-4X; See page 8.600.1
Seal Kit: SK10-4X-MMM; See page 8.650.1

FD50-44 Dividing/Combing Ratios
Spool 1
Spool 2
% out Port 2
% out Port 4
4
3
43%
57%
2
33%
67%
1
20%
80%
0
0-100%
0-100%
3
2
40%
60%
1
25%
75%
0
0-100%
0-100%
2
1
33%
67%
0
0-100%
0-100%

 

 

PERFORMANCE:

FD50-44 Flow vs. Pressure

 

DIMENSIONS:

FD50-44 Valve Dimensions

 

MATERIALS:

Cartridge: Weight: 0.11 kg (0.25 lb);
Steel with hardened work surfaces.
Zinc-plated exposed surfaces.

Special FD-Type Ported Body:
Ductile iron, required for operation
over 207 bar (3000 psi). Aluminum
bodies are available for lower pressure
operation. See page 8.010.1_4w

 

ORDERING CHART:

FD50-44 Ordering