PENN SEPARATORS BLOWDOWN EQUIPMENT

Penn Blowdown Separators

Intermittent Boiler Blowoff, Hydronic S.R.V’s, and other Process Blowdown

Boiler Blowdown Seperators

Feed and BlowdownEquipment & Systems

Blowdown Separators

Intermittent Boiler Blowoff, Hydronic S.R.V’s, and other Process Blowdown

Proven Performance

The modern and efficient way of handling boiler intermittent blowdown. Separators have also been used for hydronic safety relief valve discharges, deaerator overflows, autoclave draining, and other high flow pressurized condensate to drain applications. The smaller diameter takes up less space then a traditional blowoff tank while providing an efficient separation of flash steam and condensate.

Proven Design Features

Penn has been a leading supplier of Blow-down Separators for over forty years. This experience goes into every separator we build. Standard features like stainless steel internals and self drying design assure years of trouble free service.

Cyclone Spinning Action

The tangential entry and small diameter creates a cyclone action to efficiently separate steam and condensate. The clean steam flows up through the vortex to the vent discharging quitely to atmosphere.

Controls Thermal Pollution

Most Separators come packaged as shown with accessories for automatic cooling of condensate to drain which meets local sewer temperature requirements. The package shown includes a A34B Separator with A100L Angle Legs, A18DF Aftercooler, Self Actuating Temperature Regulator Valve, Strainer and Bimetal Thermometer. Other package options are available.

Blowdown Separators PDF – Click to download


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PENN BLOWDOWN SYSTEMS & BLOWOFF TANKSDATA AND SPECIFICATIONS

Freight, installation (hook-up), start-up and operator training are available through Smith Hughes upon request.

Blowdown System Selector Chart

USING CHART A

  1. Select Separator Size from Chart "A" by matching your Operating Pressure and Bottom Blowdown Valve Size. The largest size valve and highest pressure should be used for multiple boilers.
  2. From Chart "A" read the height "H" of the separator, "I" the inlet size to match blowdown valve size, "D" the drain and "V" atmospheric steam vent recommended sizes. All connections come standard as NPT. Flanges are optional.
  3. All Separators are 14" in diameter and are ASME Code "UM" designed and stamped for 250 psig at 450 deg. F. Select plate thickness of 5/16" or 3/8" as local regulations required. Add for National Board "U" Stamping when required. Flanged units are limited in pressure to flange rating and would be stamped accordingly.
  4. The separator size is now determined and the piping can follow these sizes. Separators are designed to quietly exhaust steam to atmosphere at 90 dB(A) or less and operate at a pressure of less than 5 psig. Drain sizing includes cooling water required for 140 deg. F. drain temperature. Select cooling valve size from chart "B" .
CHART A– BOILER BLOWDOWN SEPARATORS

Blowdown
Valve Size Separator
Dimensions
Boiler Oper. Pressure

*1"
1-1/4"
1-1/2"
2"
2-1/2"
3"
H
I
D
V
H
I
D
V
H
I
D
V
H
I
D
V
H
I
D
V
H
I
D
V
0-15
14
1
2
2-1/2
20
1-1/4
3
4
20
1-1/2
3
4
20
2
4
5
34
2-1/2
5
6
34
3
6
5
16-50
20
1
2
2-1/2
20
1-1/4
3
4
34
1-1/2
3
4
34
2
4
5
34
2-1/2
5
6
34
3
6
5
51-100
20
1
3
2-1/2
34
1-1/4
4
4
34
1-1/2
4
4
34
2
5
5
34
2-1/2
6
6
34
3
8
8
101-125
34
1
3
3
34
1-1/4
4
4
34
1-1/2
4
4
34
2
5
5
56
2-1/2
6
6
126-150
34
1
3
3
34
1-1/4
4
4
34
1-1/2
4
5
56
2
5
6
56
2-1/2
6
6
151-175
34
1
3
3
34
1-1/4
4
4
34
1-1/2
4
5
56
2
5
6
56
2-1/2
6
8
176-200
34
1
3
3
34
1-1/4
4
5
56
1-1/2
5
5
56
2
6
6
56
2-1/2
6
8
201-225
34
1
4
4
56
1-1/4
4
5
56
1-1/2
5
5
56
2
6
6
56
2-1/2
8
8
226-300
56
1
4
4
56
1-1/4
4
5
56
1-1/2
5
5
56
2
6
8
56
2-1/2
8
8
*Miniature Boilers: 1/2"-1" Blowdown Valve up to 1000#/hr Blowdown use 14" High, 1" Inlet, 2" Drain, 2-1/2" Vent.
For Boilers above 300 PSIG see Selector Chart H.

USING CHART B

  1. Depending upon the temperature of the cooling water used, locte the section of the chart which applies, 50-70 or 71-80 F.
  2. At the top of the chart locte Separator Inlet size and in left column under the section selected in step one, locate Boiler Operating Pressure. You now have a selection of three valve sizes.
  3. From the top of chart select the cooling water line pressure, either 40, 50 or 60 and read the desired valve and line size.
  4. A pressure reducing valve should be used prior to temp regulator for cooling water above 60 PSIG.
CHART B – COOLING WATER LINE AND VALVE SIZE

Separator
Inlet Size
Cooling Water
Pressure (PSI)
Boiler Oper. Pressure

*1"
1-1/4"
1-1/2"
2"
2-1/2"
3"
40#
50#
60#
40#
50#
60#
40#
50#
60#
40#
50#
60#
40#
50#
60#
40#
50#
60#
Use For
50-70 F
Cooling
Water
Temp.
0-50
1/2
1/2
1/2
1
1
1
1-1/4
1
1
1-1/4
1-1/4
1-1/4
1-1/2
1-1/2
1-1/2
2
2
2
51-100
1
3/4
3/4
1
1
1
1-1/4
1-1/4
1-1/4
1-1/2
1-1/2
1-1/4
2
2
2
2-1/2
2-1/2
2-1/2
101-125
1
3/4
3/4
1-1/4
1
1
1-1/4
1-1/4
1-1/4
2
2
1-1/2
2
2
2
2-1/2
2-1/2
2-1/2
126-175
1
1
1
1-1/4
1-1/4
1-1/4
1-1/4
1-1/4
1-1/4
2
2
2
2-1/2
2-1/2
2
2-1/2
2-1/2
2-1/2
176-225
1
1
1
1-1/4
1-1/4
1-1/4
1-1/2
1-1/2
1-1/4
2
2
2
2-1/2
2-1/2
2
3
3
2-1/2
226-250
1-1/4
1-1/4
1-1/4
1-1/4
1-1/4
1-1/4
1-1/2
1-1/2
1-1/4
2
2
2
2-1/2
2-1/2
2
3
3
2-1/2
251-300
1-1/4
1-1/4
1-1/4
1-1/4
1-1/4
1-1/4
1-1/2
1-1/2
1-1/4
2
2
2
2-1/2
2-1/2
2-1/2
3
3
3
Use For
71-80 F
Cooling
Water
Temp.

0-50
3/41/21/2111
1-1/4
1
1
1-1/4
1-1/4
1-1/4
2
2
1-1/2
2-1/2
2
2
51-100
13/43/4
1-1/4
1
1
1-1/4
1-1/4
1-1/4
2
2
1-1/2
2
2
2
2-1/2
2
2-1/2
101-125
111
1-1/4
1-1/4
1-1/4
1-1/4
1-1/4
1-1/4
2
2
2
2-1/2
2-1/2
2
2-1/2
2-1/2
2-1/2
126-175
111
1-1/4
1-1/4
1-1/4
1-1/2
1-1/2
1-1/4
2
2
2
2-1/2
2-1/2
2
3
2-1/2
2-1/2
176-225
111
1-1/4
1-1/4
1-1/4
1-1/21-1/2
1-1/4
2
2
2
2-1/2
2-1/2
2-1/2
4
2-1/2
3
226-250
1-1/41-1/41-1/4
1-1/4
1-1/4
1-1/4
1-1/2
1-1/2
1-1/4
2-1/2
2-1/2
2
2-1/2
2-1/2
2-1/2
4
2-1/2
3
251-300
1-1/41-1/41-1/41-1/21-1/21-1/4
2
2
1-1/2
2-1/2
2-1/2
2
2-1/2
2-1/2
2-1/2
4
2-1/2
3

USING CHART C

  1. Use Set Pressure of Valves and Boiler MBH or BHP x 33.3 to determine Sep. "H"eight, "D"rain and "V"ent Size.
  2. Separator Inlet Size is deterined by Relief Valve, Outlet Size. When two or more valves are manifolded together, the Inlet size must be larger than the combeines Cross Sectional area of Valves' Outlets (See Chart C1).
  3. Separator Diameter is 14" except:
    16" diameter when Inlet is 4" and Vent is 5" or larger
    18" diameter when Inlet is 5" and Vent is 5" or larger
  4. Plate Thickenss 5/16" or 3/8" as required by Local Regulations.
    All Separators are constructed to ASME Code.
CHART C – SAFETY/RELIEF VALVE SEPARATORS

Set Pressure
Valves (PSI)
Separator
Dimensions
Boiler MBH

0-49#
50-99#
100-150#
151-200#
201-250#
251-350#
351-400#
H
D
V
H
D
V
H
D
V
H
D
V
H
D
V
H
D
V
H
D
V
0-500
14
1-1/23141-1/23
14
1-1/23141-1/23
14
1-1/23
14
1-1/23
14
1-1/23
501-670
14
231423
14
231423
14
23
14
23
14
23
671-1005
14
231423
14
231423
14
23
14
23
14
23
1006-1340
14
2-1/23142-1/23
14
2-1/23142-1/23
14
2-1/23
14
2-1/23
14
2-1/23
1341-1675
14
331433
14
331433
14
33
14
2-1/23
14
2-1/23
1676-2010
14
331433
14
331433
14
33
20
34
20
34
2011-2345
2034203420342034203420342034
2346-2680
2034203420342034203420342034
2681-3350
2044204420442044203420342034
3351-4185
2045204520452045204520452045
4186-5025
2045204520452045204520452045
5026-6695
2055205520552045204520452045
6696-8370
2055205520552055345634563456
8371-10045
3456345634563456345634563456
10046-117203466346634663466345634563458
11721-134003466346634663468346834683468
13401-167403468346834683468346834683468
16741-200803488348834883488346834683468