Series 400 pages

Series 40
Ǡ Protects and isolates instrumentation

Red Valve Series 40 and Series 42 Pressure Sensors are the
industry standards for protecting instrumentation, and
assuring accurate, dependable pressure measurement of
slurry and corrosive fluids.

Ǡ Full 360° pressure reading
Ǡ Self-cleaning, flexing action

The line pressure is sensed 360° through the flexible rubber
sleeve. The captive fluid is displaced through the pressure
sensor body to the instrument’s Bourdon tube. All instruments are isolated and protected from the process, assuring
positive and accurate readings.

Ǡ Won't clog like traditional diaphragm seals
Ǡ Excellent pump protection

The full-faced, thru-bolted Series 40 installs directly in-line.
Costly installation and maintenance of pipe stands and
saddle welds, which are required when installing antiquated
diaphragm seals, are eliminated.
The thru-bolted Series 40 can be mounted in any flow
direction, submerged in a tank, or mounted with a blind
flange as a dead end to monitor tank levels.

Materials of Construction
Ǡ Carbon Steel Body – Non-wetted
Ǡ ANSI B16.5 Class 150 Flanges in Carbon Steel, 316
Stainless Steel, PVC, or 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®

The Red Valve standard gauge is bottom mounted, with
a 21/2" diameter steel case; accuracy of this gauge is ±1%
of the gauge reading. A 0 – 100 psi gauge is furnished as
standard unless otherwise specified. 0 – 200 psi gauges
are optional at no additional cost. All Red Valve Pressure
Sensors and gauges are tested and calibrated through the
mid-range to assure the highest
level of accuracy. Pressure
gauges, transmitters, transducers, recorders, differential
Flange
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pressure or vacuum switches
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are factory filled and mounted
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Fill
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to the Series 40.
D

Sleeve

Ǡ Fill Fluid; Ethylene Glycol & Water (200° F),
Vegetable Oil (230° F), Silicone Oil (400° F)

Body

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

DIMENSIONS SERIES 40
Size
D
1"
11/2"
2"
21/2"
3"
4"
5"
6"
8"

Outside
Diameter
A
4 1 /2 "
5"
6"
7"
7 1 /2 "
9"
10"
11"
131/2"

Length
F to F
1 7 /8 "
1 7 /8 "
1 7 /8 "
1 7 /8 "
1 7 /8 "
2 1 /8 "
2 1 /4 "
2 1 /4 "
2 1 /2 "

100°F Working
Pressure
(psi) *
275
275
275
275
275
275
275
275
275

* PVC Unit has Working Pressure of 200 psi; Higher Working Pressure Available.

Weight
(lbs)
6
8
12
16
18
27
32
37
58

A