Introduction
This installation guide provides instructions for installation,
startup and adjustment. To receive a copy of the Instruction
Manual, contact your local Sales Oce or view a copy at
www.sher.com. For further information refer to: 161 Series
Instruction Manual, D103232X012.
P.E.D. Categories
This product may be used as a pressure accessory with
pressure equipment in the following Pressure Equipment
Directive categories. It may also be used outside of the
Pressure Equipment Directive using sound engineering
practice (SEP) per table below. For information on the
current PED revision see Bulletin: D103053X012.
TYPE PRODUCT SIZE CATEGORY
161EB NPS 1/4
SEP
161AY DN 15 / NPS 1/2
Specications
Outlet (Control) Pressure Ranges
See Table 1
Proportional Bands
See Table 1
Maximum Inlet Pressures
(1)
161, 161M, 161EB, 161EBH, 161EBM or 161EBHM:
103 bar / 1500 psig
161AY, 161AYM or 161AYW: 10.3 bar / 150 psig
Pilot Flow Coecients
See Table 2
Options
Type 252 Pilot supply lter
Pilot Sping Case Vent
1/4 NPT (internal)
1. The pressure/temperature limits in this Installation Guide and any applicable standard or code limitation should not be exceeded.
Installation
!
WARNING
Only qualied personnel shall install or service
a relief valve/backpressure regulator. Relief
valves and backpressure regulators should
be installed, operated and maintained in
accordance with international and applicable
codes and regulations and Emerson Process
Management Regulator Technologies,
Inc. instructions.
If the regulator vents uid or a leak develops in
the system, it indicates that service is required.
Failure to take the regulator out of service
immediately may create a hazardous condition.
Personal injury, equipment damage, or leakage
due to escaping uid or bursting of pressure
containing parts may result if this regulator
is overpressured or is installed where service
conditions could exceed the limits given in the
Specications section, or where conditions
exceed any ratings of the adjacent piping or
piping connections.
To avoid such injury or damage, provide
pressure relieving or pressure-limiting devices
(as required by the appropriate code, regulation
or standard) to prevent service conditions from
exceeding limits. Additionally, physical damage
to the regulator could result in personal injury
and property damage due to escaping uid.
To avoid such injury and damage, install the
regulator in a safe location.
PILOT TYPE
OUTLET (CONTROL) PRESSURE RANGE PROPORTIONAL BAND
(1)(2)(3)
bar psig bar psig
161 or 161M
0.34 to 1.03 5 to 15 0.14 2
0.69 to 8.62 10 to 125 0.14 2
8.3 to 20.7 120 to 300 0.41 6
161AY, 161AYM or 161AYW
15 to 37 mbar
(4)
6 to 15 in. w.c.
(4)
2 mbar 1 in. w.c
0.03 to 0.08
(5)
0.5 to 1.2
(5)
2 mbar 1 in. w.c
0.08 to 0.17
(6)
1.2 to 2.5
(6)
0.03 0.5
0.17 to 0.31 2.5 to 4.5 0.03 0.5
0.31 to 0.48 4.5 to 7 0.03 0.5
161EB or 161EBM
0.34 to 1.03 5 to 15 0.03 0.5
0.69 to 2.76 10 to 40 0.03 0.5
2.07 to 5.17 30 to 75 0.04 0.6
4.83 to 9.65 70 to 140 0.09 1.3
8.96 to 13.8 130 to 200 0.10 1.5
13.8 to 24.1 200 to 350 0.21 3
161EBH or 161EBHM
17.2 to 31.0 250 to 450 0.24
(7)
3.5
(7)
27.6 to 48.2 400 to 700 0.48
(7)
7
(7)
1. Proportional band includes outlet pressure drop plus hysteresis (friction), but does not include lockup.
2. Proportional band was determined with a pressure drop ranging from 3.4 to 10.3 bar / 50 to 150 psig. Approximately double the proportional band if the pressure drop is less than 3.4 bar / 50 psig
3. With Type 112 restrictor set on 2.
4. The spring ranges for the Type 161AYW is 7.5 to 30 mbar / 3 to 12 in. w.c.
5. The spring ranges for the Type 161AYW is 27 to 62 mbar / 11 to 25 in. w.c.
6. The spring ranges for the Type 161AYW is 0.06 to 0.17 bar / 0.9 to 2.5 psig.
7. Proportional band was determined with a pressure drop ranging from 6.9 to 20.7 bar / 100 to 300 psig. Approximately double the proportional band if the pressure drop is less than 6.9 bar / 100 psi.
Table 1. Outlet (Control) Pressure Ranges and Proportional Bands
161 Series
Installation Guide
D103232X014
English - August 2018
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