Series 480 pages

Series 48
Ǡ Wafer design reduces costs
Ǡ Protects and isolates instrumentation
Ǡ Fits 150 and 300 lb. flanges
Ǡ Lightweight design

Red Valve’s Series 48 Pressure Sensor protects and
isolates instrumentation, eliminating plugging and fouling
that can occur in slurry and hard-to-gauge liquid applications. The economical Series 48 is designed to fit inside
the bolt pattern of the pipe flanges, allowing for ease of
installation and reducing the size of the unit. Series 48
sensors are designed to fit Class 150 and 300 flange
drilling, DIN, or BS NP10 piping systems.
Reliable, accurate instrument readings are often difficult
or even impossible to obtain in pipelines carrying slurry,
solids or chemical process. Standard diaphragm seals are
vulnerable to plugging by debris or deposits and only give
a pressure reading from one small area. With the Series
48 Pressure Sensor these problems are eliminated.

Materials of Construction
Ǡ Carbon Steel Body
Ǡ Flanges Carbon Steel, 316 Stainless Steel, PVC,
Teflon® Coated Carbon Steel
Ǡ Sleeves Available in Pure Gum Rubber, Neoprene,
Chlorobutyl, Buna-N, Hypalon®, Viton®, EPDM,
White Food Grade Elastomers, Teflon® coated
Buna-N, or Teflon® coated Viton®
Ǡ Fill Fluid; Ethylene Glycol & Water (200° F),
Vegetable Oil (230° F), Silicone Oil (400° F)

The principle of operation is that line pressure is sensed
through a flexible rubber sleeve which is a full 360°
circumference of the pipe I.D.. The captive fluid is
displaced through the Series 48 Pressure Sensor body
to the instrument’s Bourdon tube. All instrumentation
is protected from the process, which assures accurate,
repeatable pressure
readings.
Flange
Fill

,,
,,
,,
,,
D

Sleeve

Body

A

, ,
,,
, ,
,,
, ,
F to F

DIMENSIONS SERIES 48
Outside
100°F Working
Size
Diameter
Length
Pressure
D
A
F to F
(psi)*
2"
4"
1 7 /8 "
720
21/2"
43/4"
1 7 /8 "
720
3"
51/4"
1 7 /8 "
720
4"
63/4"
2 1 /8 "
720
6"
85/8"
2 1 /4 "
720
8"
107/8"
2 1 /2 "
720
10"
131/4"
2 3 /4 "
720
12"
16"
3"
720
14"
175/8"
3"
720
16"
20"
3"
720
18"
211/2"
3"
720
20"
233/4"
3"
720
24"
281/8"
3"
720
30"
345/8"
3"
720
36"
411/8"
4"
720
42"
471/8"
4"
720
48"
543/8"
4"
720
*PVC Unit has a Working Pressure of 200 psi; Higher Working Pressure Available.

Weight
(lbs)
3
5
6
9
12
16
22
25
50
60
70
80
115
150
248
319
392