IN-LINE
F
MF B
FMF Flow Control
Male-to-Female
10 03/14
DESCRIPTION
A Variable Flow Restrictor with Positive Shut-Off and Free
Reverse Flow
A wide range of flow adjustment in the controlled flow direction is
possible because of the fine thread and tapered needle. A spring
biased ball check allows full flow in the opposite direction.
Unwanted changes in adjustment are prevented by a lock nut.
A wide range of flow adjustability
Lock Nut to maintain flow setting
Positive shut-off
Eliminates need for extra pipe nipple
SPECIFICATIONS
Maximum Operating Pressure
(Non-Shock Service)
Brass: 2,000 psi (138 bar)
Cracking Pressure
1 to 2.5 psi (.07 to .17 bar)
Operating Temperature Range
-15° to +400° F (-26° to +204° C)
Threads
NPTF
Pipe Size A HEX B C D E Orifice
1/8"
11/16
(17.5)
1-3/4
(44.5)
7/8
(22.2)
13/64
(5.2)
.107
(2.7)
1/4"
7/8
(22.2)
2-3/8
(60.3)
1-1/16
(27.0)
23/64
(9.1)
.156
(4.0)
3/8"
1-1/16
(27.0)
2-3/4
(69.9)
1-3/16
(30.2)
11/32
(8.7)
.219
(5.6)
1/2"
1-5/16
(33.4)
3-3/16
(81.0)
1-15/32
(37.3)
15/32
(11.9)
.281
(7.1)
( ) Parentheses = Millimeters
HOW TO ORDER
Code Size
10
1/8"
20
1/4"
25
3/8"
30
1/2"
Code Material
B
Brass
INSTALLATION DIMENSIONS
2.23.1
K
Code Knob
K
Knob
Size
NPTF Thread
Brass
1/8" FMF10BK
1/4" FMF20BK
3/8" FMF25BK
1/2" FMF30BK
AVAILABLE MODEL CODES
2
1
www.deltrolfluid.com
Size
Max Recommended
Flow gpm (lpm)
Co-Efficient
(Cv Factor)
1/8" 1.5 (5.7) .23
1/4" 3.0 (11.4) .54
3/8" 5.0 (18.9) .83
1/2" 8.0 (30.3) 1.47
FLOW RATING
Materials
Body, Housing, Plug: Brass
Collar: Stainless Steel 303
Needle: Brass
O-Ring: Viton
Back-Up Washer: Teflon
Ball: Stainless Steel 440
Spring: Stainless Steel 302
Lock Nut: Brass
Knob: Aluminum
Flow
Control
Male-
t
o-
Fem
ale
NPTF
Size
Material Knob
