BLOWOFF TANKS
For Parker Steam Boilers 1 1/2 to 150 H.P.
115 Blowoff Tanks
The Parker Blowoff Tank
The Parker Blowoff Tank is a highquality, heavy-duty tank properly
designed with adequate volume to
provide a safe and effective blowoff
which is necessary for flushing steam
boilers.
All tanks have been tested for the sizes
of Parker Boilers listed and approved
by the Manufacturer for safe and
proper blowoff.
The Parker Blowoff Tank is
recommended with all steam boilers.
It is required by most local inspection
jurisdictions.
ADVANTAGES
1. Safe Blowoff
The tank is properly designed for
Parker Boilers to prevent unsafe
pressure buildup and to eliminate
the hazard of discharging steam and
hot water to the atmosphere. Do not
confuse the Parker with small tanks
or separators that discharge steam
unsafely out drain and vent.
2. Non-Restrictive
The tank has the proper size vent and
generous storage capacity equal to at
least double the amount of blowoff
water. On Parker Boilers, this permits
complete blowoff from full pressure
so that scale and sediment can be
thoroughly flushed from the boiler.
3. Special Drain Fitting
The internal drain pipe with syphon
breaker is arranged to maintain a
water storage equal to no less than the
blowoff water volume when applied to
Parker Boilers. The tank drains from
the cooler lower level so that drain
water does not normally exceed 140°F.
4. Blowoff Cooling Assembly
(Optional) When multiple boilers
feed one Blowoff Tank, (or for special
circumstances), the Parker Blowoff
Cooling Assembly can be fitted to the
tank outlet to cool blowoff discharge
water to meet UPC standards.
5. Heavy Internal Baffle
The blowoff inlet baffle distributes the
discharge uniformly to protect the tank
shell for long life.
6. Heavy Construction
All tanks are designed for a minimum
of 125 PSI even though they are vented
to the atmosphere. Tank shell and heads
are standardly 3/16” thick on tanks up
to 20” diameter and 1/4” thick on larger
tanks. Heavier tanks are available when
specified.
7. Easily Cleaned
Convenient inspection and clean-out
openings are provided so that the tank
can be very easily inspected and cleaned.
8. Compact & Attractive
The tanks are designed to minimum
diameters and with openings arranged
so installation can be made against the
wall or in the corner of the room for
minimum floor space. Tanks are painted
with an attractive, durable finish.
9. Codes
All tanks are manufactured and
furnished in accordance with the ASME
Boiler and Pressure Vessel code and
American National Standard, ANSI/ASME
BVP-VIII-1. Inspection and registration
are with The National Board of Boiler
and Pressure Vessel Inspectors. Blowoff
Tanks also comply with the International
Association of Plumbing and Mechanical
Officials’ Uniform Plumbing Code.
Inlet
Outlet
115 Blowoff Tanks
National Board
PARKER
B O I L E R C O.
NEVER A COMPROMISE FOR QUALITY OR SAFETY
5930 Bandini Boulevard
Los Angeles CA 90040
Fax (323) 722-2848
www.parkerboiler.com
Phone (323) 727-9800
BROCHURE 115 OA3
BLOWOFF TANKS
For Parker Steam Boilers 1 1/2 to 150 H.P.
115 Blowoff Tanks
32-Vent
Front View Side View
4”
Manhole only
on 4272 tank
24”
33H11H
4”
No. ITEM UNITS BLOWOFF TANK MODEL
PART NUMBER BD1248 BD1648 BD2048 BD2448 BD3048 BD3672 BD4272
Parker Boiler Size, Maximum HP 12 16 30 40 50 115 150
Maximum Working Pressure PSI 125 125 125 125 125 125 125
Blowoff Capacity (1/2 tank) Gal 12 24 39 57 92 189 266
Shell and Head Thickness In 3/16 3/16 3/16 1/4 1/4 1/4 1/4
Diameter In 12 16 20 24 30 36 42
L1 Shell Length In 48 48 48 48 48 72 72
L3 Height Overall In 66 68 71 73 76 103 106
11 Blowoff Inlet Size In 1 1 1-1/4 1-1/4 1-1/2 2 2
11H Blowoff Inlet Height In 47 48 49 50 52 67 69
32 Vent Size - NPT In 2-1/2 2-1/2 3 3 4 5 5
*
33 Water Outlet Size In 1 1 1-1/4 1-1/4 1-1/2 2 2
33H Water Outlet Height In 35 36 37 38 40 53 55
34 Drain/Cleanout Size In 2 2 2 2 2 2 2
35 Inspection Opening Size In 1-1/2 1-1/2 2 2 2 2 2
Size for up to 150 PSI-NPT
Shipping Weight Lbs 180 220 295 435 575 930 1095
Minimum Reduced Vent Line
32L
In 2 2 2-1/2 2-1/2 3 4 4
35-Inspection
11-Blowoff (Inlet)
33-Water Outlet
35-Inspection Opening
34-Drain/Cleanout
Internal Baffle
Syphon Breaker
L3L1
Notes
• Standard Tanks comply with A.S.M.E., Uniform Plumbing, State of
California, and City of Los Angeles Codes. Tanks are registered with the
National Board.
• Tank sizes shown are for Parker Boilers only. For other makes of boilers,
the blowoff capacity of the tank must be at least one Blowoff volume.
115 Blowoff Tanks
5930 Bandini Boulevard
Los Angeles CA 90040
Fax (323) 722-2848
www.parkerboiler.com
Phone (323) 727-9800
BROCHURE 115 OA3
• Tanks that comply with the National Board “Boiler Blowoff Equipment
Recommendations” are available with heavier construction and special
openings at additional cost. Add *NB after part number.
Consult local inspection authority for approval before reducing vent line to
*
size shown above.
PARKER
B O I L E R C O.
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