Bulls-Eye Sight Feed Valves allow visual observation of the liquid stream from a distance, with the volume of flow controlled by an adjustable needle valve. The Bulls-Eye sight feed valve has excellent flow characteristics with low pressure drop. These units are principally used on gravity or pressure oiling systems of larger machinery for lubrication where considerable capacities of oil must be dispensed. The rugged, sturdy construction makes them especially suitable for paper mill machinery, steel mills, rolling mills, sugar mills, steam and gas engines, gear units, etc. Their use can be extended to any application requiring adjustable, visible flow control.
| Catalog Number | Body Style |
Inlet N.P.T. |
C | D | Outlet N.P.T. |
| B-2501-1 | T-Handle | 1/4 | 6-11/32 | 5/16 | 1/4 |
| B-2501-2 | 3/8 | 7/16 | 3/8 | ||
| B-2501-3 | 1/2 | 1/2 | 1/2 | ||
| B-2501-4 | 1/2 | 9/16 | 3/4 | ||
| B-2501-5 | Tamperproof | 1/4 | 6-11/32 | 5/16 | 1/4 |
| B-2501-6 | 3/8 | 7/16 | 3/8 | ||
| B-2501-7 | 1/2 | 1/2 | 1/2 | ||
| B-2501-8 | 1/2 | 9/16 | 3/4 | ||
|
Also Available in Remote Mounting |
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When Ordering Specify: Specifications: Small Sight Feed Valves control the volume of liquid
being dispensed while permitting visual observation of liquid flow. The valves are primarily
used on gravity or pressure oiling systems for bearing lubrication on machinery. Their use
can be extended to any application requiring adjustable, visible, flow control. They are
equipped with needle valve control that regulates liquid flow from full flow to a complete shutoff.
The valves are available with a conventional exposed adjustment, but can be provided with
tamperproof construction. The construction is rugged and sturdy. The bodies are made
of plated steel. The sight glass is firmly held between two seals, a solid one at the bottom
and a split one on top for venting. The purpose of the vent is to eliminate any air block which
might occur in some applications which develop a suction or back pressure. There are some
applications under which vacuum or pressure must be maintained on the discharge side of a valve.
For applications requiring air tight sight chambers, solid gaskets can be provided. When Ordering Specify: Specifications: Multiple Sight Feed Valves permit feeding of liquids
to widely separated points, controlled and observed from one central location. They are suitable
for gravity or pressure lubricating systems. These valves are used in a variety of industries:
chemical, mining, paper, agricultural, marine, wood-working, textile, and can be used to lubricate
typical equipment like pumps, compressors, machine tools, bearings, seals, punch pressed and rollers.
A revolutionary principle regarding the assembly or these valves has been incorporated. The
customer, for the first time, has the option of changing the unit in the field by merely stacking
them together, eliminating the costly tie-rod and manifold method. Very compact, the
multiple valves require only the minimum amount of space making the valves especially suitable
for lubricating inaccessible places. When Ordering Specify: Specifications: Constant Flow Control Valves have a fixed flow rate and
can be equipped with orifices producing a specific flow rate ranging from 3 ounces per minute to 1
gallon per minute. The flow rate selected will remain constant within plus or minus 20% for 3
ounces to 9 ounces per minute, and within plus or minus 10% for 1 pint to 1 gallon per minute.
This accuracy will be retained with varying pressures, ranging from 15 PSI minimum to 125 PSI maximum,
and with any oil having a viscosity of 400 SSU minimum to 750 SSU maximum. Flow control valves
are used in low pressure lubricating systems. They do not require frequent adjustment usually needed
on ordinary valves and are therefore, especially suitable for use in automated plants, for elevated,
distant, or hard to get at places. The cylinder in the body, as well as the piston and spring, can
readily be removed due to the unique construction. This allows a piston with a certain
orifice to be exchanged with a different one for changing the flow rate if necessary.
*Special - Please Consult Factory
When Ordering Specify: Specifications: Precision Relief Valves meet the industry's requirements
for more exacting and reliable performance. The relief valve has a fixed upper pressure rating
which is held within close tolerances. In addition, relief pressures can be reduced and any
setting locked. The setting for the upper limit is tamperproof and cannot be adjusted.
These units are used as a safety device on reservoirs where a certain maximum pressure should not
be exceeded, or for any other application demanding pressure to be relieved at a specific value.
The valves are offered in relief pressure ratings of 30 PSI and 60 PSI maximum. They have a
1/4 inch pipe thread. The function of this device is simple. A plunger equipped with an
O-ring is seated against a port inside the valve body. A spring holds the plunger to its seat.
An enclosure cap is screwed over the valve body which is used to adjust the valve for the upper
pressure limit. A vent hole on the top of the cap allows the escape of the released air or liquid.
A locknut is provided on the valve body to lock the cap in place. Units are installed by means
of the pipe thread provided. To use the relief valve for the maximum rated pressure, screw the
top cap down until seated and lock this setting with the locknut. Should it be desirable to reset
the valve for a lower pressure, it is only necessary to back off the top cap to a suitable point
producing the desired pressure relief, and lock the setting with the locknut. When Ordering Specify: Specifications:
Window Flow Sights For Full Flow offer no restrictions to the flow, permitting liquid to flow freely.
The flow of liquid and its clarity can be visually observed through the sights. The units have
an airtight sight chamber. The window sights are primarily used in low pressure oil lines.
There are no restrictions on the inside, therefore, no pressure drop, resulting in the full flow of
liquid equal to respective pipe size. They can be installed in any position, either horizontally,
vertically, or at an angle, and are offered in various pipe sizes. Construction is simple and
sturdy. Body is made from bar stock and is steel, plated. The sight is glass with Buna-N
seals. Maximum recommended pressure is 125 P.S.I., and maximum temperature is 225º F. There
are five standard pipe thread sizes ranging from 1/8" to 3/4" female pipe thread. Larger
sizes can be provided on request. When Ordering Specify: Specifications:
Full Vision Flow Sights with Restricted Orifice are used in oil lines to check the flow of oil and
its clarity by visual observation. The large size and construction permits maximum visibility
and dependable inspection of liquid flow from a distance. They are often used at elevated
heights to tell at a glance whether oil is circulating. The flow of liquid is downward
through a nozzle in the sight. All units are furnished with a removable vent plug.
The sight chamber is normally vented when flow is discharged by gravity and closed when flow is
discharged by low pressure.
*Special - Please Consult Factory
When Ordering Specify: Specifications: RETURN TO TOP
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•Catalog Number
•Temperature....................225º F. Maximum
•Pressure.........................125 P.S.I. Inlet to Orifice
55 P.S.I. Sight Chamber
Maximum with Vent Sealed
•Valve
Body......................Aluminum, Gold Anodized
•Needle Ass'y...................Steel, Plated
•Sight...............................Glass
•Seals..............................Buna-N
•Port................................1/4 Dia.
•Sight...............................1-1/2 Dia.
Small Sight Feed Valves
Inlet
Outlet
1/8 or 1/4 Fem. or Male N.P.T.
1/8 or 1/4 Fem. or Male N.P.T.
or 1/4 O.D. Tube
•Catalog Number
•Temperature....................225º F. Maximum
•Pressure.........................125 P.S.I. Inlet to Orifice
Sight Chamber is Vented
•Port................................1/16 Dia.
•Sight...............................Glass
•Body...............................Steel Plated, 5/8 Sq.
•Seals..............................Buna-N
Multiple Sight Feed Valves
Catalog Number
B-3150-2
-3
-4
-5
-6
-12
-24
Feeds
2
3
4
5
6
12
24
L
1-1/2
1-1/2
2-1/4
2-1/4
3
5-1/4
9-3/4
M
3
3-3/4
4-1/2
5-1/4
6
10-1/2
19-1/2
•Catalog Number
•Additional Valves
•Temperature....................225º F. Maximum
•Pressure.........................125 P.S.I. Inlet to Orifice
Sight Chamber is Vented
•Port................................1/16 Dia.
•Valve
Body......................Aluminum Alloy 5/8 Sq.
•Sight...............................Glass
•Seals..............................Buna-N
Constant Flow Control Valves
Catalog Number
Flow Rate
Per MinuteFlow Tolerance
Orifice Size
B-1844-1
3 Oz.
Plus-Minus
20%.024
*B-1844-2
6 Oz.
.033
*B-1844-3
9 Oz.
.038
*B-1844-4
1 PT.
Plus-Minus
10%.047
*B-1844-5
1 QT.
.067
*B-1844-6
1/2 Gal.
.093
*B-1844-7
3/4 Gal.
.106
*B-1844-9
1 Gal.
.111
•Catalog Number
•Flow Rate....................Non Adjustable See Table
•Pressure.....................15 P.S.I. Minimum
125 P.S.I. Maximum
•Temperature.................225º F. Maximum
•Oil Viscosity................Between 400 SSU and 750 SSU
•Body...........................Aluminum Alloy
•Piston.........................Brass
•Seals..........................Buna-N
Precision Relief Valves
Catalog Number
Pressure Setting
Minimum
Maximum
A-4454-1
5 P.S.I.
30 + - 5 P.S.I.
A-4454-2
5 P.S.I.
60 + - 5 P.S.I.
• Catalog Number
•Pressure....................Adjustable
•Temperature...............225º F. Maximum
•Body..........................Aluminum Alloy
•Piston........................Brass
•Seal...........................Viton® - A (® Viton is a registered trademark of Dupont Dow Corp.)
•Spring........................Stainless Steal
Flow Sights
Catalog Number
Inlet - Outlet
A
B
C
K
A-715-1
1/8 Fem. N.P.T.
11/32
1-1/16
2-1/4
13/16
A-715-2
1/4 Fem N.P.T.
7/16
1-1/16
2-1/4
13/16
A-711-2
3/8 Fem. N.P.T.
37/64
1-3/8
2-7/8
15/16
A-733-2
1/2 Fem. N.P.T.
9/16
1-3/8
3-5/8
1-1/16
A-2109-1
3/4 Fem. N.P.T.
3/4
1-1/2
3-51/64
1-1/4
•Catalog Number
•Pressure....................125 P.S.I. Maximum
•Temperature...............225º F. Maximum
•Sight..........................Glass - Pressure Tight Solid Gaskets
•Body..........................Steel, Plated
•Seals.........................Buna-N
Full Vision Flow Sight
Catalog Number
Inlet
Outlet
N.P.T.Fig.
A
B
C
I
K
G.P.M.
Acrylic
Pyrex
*B-1781-12
B-1781-22
1/4
1
1-1/8
3/4
2
5/32
1-1/2
1.7
*B-1766-4
B-1766-14
3/8
1-1/2
1-1/8
2-5/8
3/16
1-7/8
2.4
*B-1783-12
B-1783-22
1/2
2
1-5/8
3-3/4
5/16
2-1/2
6.7
B-1126-3
B-1126-13
1
2
2-1/2
2-1/8
5-5/16
5/8
4-3/8
16
B-1126-4
B-1126-14
1-1/4
2-1/2
2-1/8
5-5/16
5/8
4-3/8
26.9
•Catalog Number
•Pressure..........................125 P.S.I. Maximum for Acrylic
30
P.S.I. Maximum for Pyrex
•Temperature.....................160º F. Maximum for Acrylic
225º F. Maximum for Pyrex
•Bodies..............................Aluminum
•Sights...............................Acrylic, except 1 1/8 Dia. which is
Cellulose Acetate and Pyrex
•Seals................................Buna-N