Pressurematic
SP Pressure
Pilot
Description
The Pressurematic SP series pressure pilot is part
of the Bettis line of pressure sensory devices used
to monitor input pipeline or process pressure. The
pilot is suitable for use in high or low pressure shut
down applications, utilizing either a pneumatic or
hydraulic signal. Pilot set points are determined by
piston size and spring rate. A piston converts pressure into motion when a pre-determined set point
is reached.
Features
■
■
■
■
■
Field adjustable high or low pressure set points
Extended pressure sensing capability through
interchangeable range springs
Positive piston stop limits piston travel against
overpressure
Optional safety vent on sensing body, 1/8 NPT
No brass, bronze or carbon steel parts
■
■
■
■
Anodized aluminum body with stainless steel
and aluminum internals
Optional stainless steel sensing body and
adapter
Nitrile process seals standard, H-T fluoroelastomer
seals to +250°F (+121°C), optional
Material trim to NACE available
Specifications
Ports:
Process – 1/2 FNPT or 1/2 MNPT
Instrument – 1/4 FNPT
Media:
Process – Crude oil, gas
Instrument – air, gas, hydraulic fluid
Maximum Working Pressure:
Process – 5000 PSI (340 BARg)
Instrument – 1500 PSI (102 BARg)
2
Temperature Rating:
–50°F to +200°F
(–46°C to +93°C)
Flow Coefficient (Cv):
0.023
Set PointDrift:
3%
Set Point Range:
High (increasing) 5000 psi
Low (decreasing) 30 psi
Design
Item
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18*
19*
20*
21*
22*
23*
24*
25
26
Description
Material
End Body
Center Body
Spool Bushing
Valve Spool
Spool Cap
Spring Seat, Medium
Spring Housing
Locknut
Spring Cap
Body
Piston, 0.625 DIA
Adaptor, 1/2 FNPT
Spring, Medium
Lee Plug, Spool
Jam Nut, Spool
Capscrew, Spring Housing
Lockwasher, Spring Housing
O-Ring, Spool
O-Ring, Center Body
O-Ring, End Body
O-Ring, End Body
O-Ring, Piston
O-Ring, Adaptor
Backup Ring, Piston (Note 1)
Nameplate
Drive Screw
AL 6061-T6 ANDZ
AL 6061-T6 ANDZ
AL 7075-T651
SS 304
AL 7075-T651
SS 303
AL 6061-T6 ANDZ
AL 6061-T6 ANDZ
AL 6061-T6 ANDZ
AL 6061-T6 ANDZ
17-4 PH
AL 6061-T6 ANDZ
SS 302
AL 2024-T4 ANDZ
HEXJ SS 304
HXSC SS 304
HLCK SS 304
Urethane 90A
Nitrile 70A MOS2
Nitrile 70A MOS2
Nitrile 70A
Nitrile 70A
Nitrile 70A
Nitrile 70A
AL 3003-H14
SS 304
* Recommended spare parts.
0.375 diameter piston o-ring uses a backup ring (24) not shown.
Ranges
SP
Series
SP-20LL
SP-20L
Piston
Spring
Spring
Diameter Wire
Rate
(in.)
Diameter (lb/in)
(in)
1.250
1.250
0.225
0.263
Instrument
Signal
Pressure
(PSIG)
Extra
Light
(83)
1500
Light
(200)
100
100
1500
SP-20M
1.250
0.312
Medium
(449)
SP-20H
1.250
0.331
Heavy
(631)
100
1500
100
1500
SP-10L
0.625
0.312
Light
(200)
SP-10M
0.625
0.312
Medium
(449)
100
1500
100
1500
SP-10H
0.625
0.331
Heavy
(631)
SP-06M
0.375
0.312
Medium
(449)
100
1500
100
1500
SP-06H
0.375
0.331
Heavy
(631)
100
1500
Range
Screw
Turns
N.O. Instrument Signal N.C. Instrument Signal
off with Increasing
on with Increasing
Pilot Process Pressure Pilot Process Pressure
Min
Max
Pilot
Set
Point
(PSIG)
Pilot
Reset
Point
(PSIG)
Pilot
Dead
Band
(PSIG)
Pilot
Set
Point
(PSIG)
Pilot
Reset
Point
(PSIG)
Pilot
Dead
Band
(PSIG)
1
18
1
18
1
10
1
10
1
10
1
10
1
10
1
10
1
10
1
10
1
10
1
10
1
10
1
10
1
10
1
10
1
10
1
10
15
100
10
100
40
155
35
155
70
320
65
315
125
490
120
490
175
625
170
600
340
1355
320
1330
525
1970
505
1930
895
3515
865
3465
1255
4560
1215
4500
30
130
30
135
60
190
60
90
90
355
95
360
150
530
155
540
210
680
230
680
385
1440
395
1450
585
2130
595
2155
1070
3860
1110
3945
1505
5000
1560
5000
15
30
20
35
20
35
25
20
20
35
30
45
25
40
35
50
35
55
60
80
45
85
75
120
60
160
90
225
175
345
245
480
250
440
345
500
30
130
30
135
60
190
60
195
90
355
95
360
150
530
155
540
210
680
230
680
385
1440
395
1450
585
2130
595
2155
1070
3860
1110
3945
1505
5000
1560
5000
15
100
10
100
40
155
35
155
70
320
65
315
125
490
120
490
175
625
170
600
340
1355
320
1330
525
1970
505
1930
895
3515
865
3465
1255
4560
1215
4500
15
30
20
35
20
35
25
20
20
35
30
45
25
40
35
50
35
55
60
80
45
85
75
120
60
160
90
225
175
345
245
480
250
440
345
500
Notes:
1. Allow 10% deviation from
tabulated values due to
manufacturing tolerances and
temperature affects.
2. Pilot set-points may be
interpolated linearly, between
100 psig and 1500 psig
instrument signal pressures.
3. Maximum deadband values
listed are for maximum pilot
and pneumatic signal pressure
at room temperature.
4. Deadbands typically double
where signal media is hydraulic
fluid. Consult factory for more
data.
3
Model Designation
Model number format:
SP – N1 L1 – option code letters, alphabetical order
Description of model number:
SP – Pressurematic SP Series Pressure Pilot
– instrument ports connections 1/4 NPT female for supply, signal and exhaust.
– sensing port connection 1/2 NPT female standard, other configurations as options.
– standard trim construction with aluminum body and adapter, and stainless steel piston for pilot
pressures to 2160 psi, operating temperature from –50°F (-46°C) ambient to +200°F (+93°C) process.
– standard low temperature molybdenum disulphide filled nitrile and cast urethane spool o-ring seals.
– special trim construction with stainless steel body and adapter for sour applications or pilot
pressures to 5000 psi.
– special trim construction with H-T fluoroelastomer piston and adapter o-ring seals, for sour process applications
and/or an operating temperature from –30°F (-34°C) ambient to +250°F (+121°C) process.
– signal “on” with increasing or decreasing pilot pressure.
N1 – Piston diameter in 1/16th inch increments:
06 0.375 piston diameter
10 0.625 piston diameter
20 1.250 piston diameter
L1 – Spring rate class:
LL extra low 0.225 diameter wire
L
low
0.263 diameter wire
M medium 0.312 diameter wire
H high
0.331 diameter wire
Option code letters:
C Stainless steel sensing body and adapter for sour applications or pilot pressures to 5000 psi
D Adapter connection 1/2 NPT female
E
1/8 NPT female body vent connection
F
H-T fluoroelastomer piston and adapter o-ring seals for –30°F (-34°C) to + 250°F (+121°C) or sour process applications
Example:
“SP-10M-C” designates Pressurematic SP Series Pilot with 0.625 diameter piston and medium spring, stainless steel
sensing body and adapter for sour applications or pilot pressures to 5000 psi, aluminum sensing body and adapter
with low temperature nitrile o-ring seals, and 1/2 NPT male adapter connection.
World Area Configuration Centers (WACC) offer sales support, service, inventory and commissioning to our global
customers. Choose the WACC or sales office nearest you:
www.EmersonProcess.com/Bettis
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TX
77065
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BoxTX
508
USA
USA
Waller,
TX 77484 U.S.A.
T +1
281
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4774100
4100
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4772809
2809
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BETTIS
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Bettis
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