Blagdon Pump B25 User Manual
SERVICE & OPERATING MANUAL
AIR OPERATED DOUBLE DIAPHRAGM PUMP
B25 & X25
2505 Metallic
High Pressure W1 Series
This pump is Atex approved for use
in potentially explosive atmospheres
Group II category 2
Table of Contents
Service / Maintenance Log, Recycling 2
Dimensions 3
Performance Curve 3
Technical Data & Temperature limitations 4
Explanation of Pump Nomenclature 4
Principle of Pump Operation 5
Installation guide 5
Important Warnings & Safety Information 6
Troubleshooting 7
Grounding the Pump 7
Warranty 8
Service 8
Air Valve Overhaul 8
Wet-side Overhaul 8
Exhaust Safety 9
High Temperature Inst. 9
Parts List 10
Assembly Drawing 11
Declaration of Conformity 12
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Service / Maintenance Log
Date Details Completed
RECYCLING
Many components of BLAGDON air operated double diaphragm pumps are made of recyclable materials. We encourage pump
users to recycle worn out parts and pumps whenever possible, after any hazardous pumped fluids are thoroughly flushed.
Contact Information
Contact Phone / Fax No.
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GA Drawing & Performance Curve
B2505 Metallic H.P. pump, General Assembly :- All dimensions +/- 3mm
B2505 Metallic H.P. Pump Performance Curve, based on water at ambient temperature
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TECHNICAL DATA
FLUID CONNECTIONS CAPACITY MAX SOLIDS MAX DISCHARGE HEAD DISPLACEMENT/STROKE
1” BSP (F) 0 - 88 Liters/Minute
(0 - 19.4 Gallons/Minute)
3 MM
(1/8”)
102 Meters
(335 ft)
0.475 Litres
(0.1 UK Gallons)
MAX. WORKING PRESSURE AIR INLET TEMPERATURE LIMITS PUMP WEIGHTS :-
10 Bar (145 psi) 3/8” BSP (F) Determined by Elastomers AA :- 16.3 Kg CA :- 27.8 Kg
SA :- 31.8 Kg CC :- 34.8 Kg
SC :- 38.8 Kg SS :- 39.8 Kg
Note! Maximum Discharge pressure not to exceed 10 bar
� Caution - Operating temperature limitations are as follows:
Materials
Buna-n - General purpose, oil resistant. Shows good solvent, oil, water and hydraulic fluid resistance. Should not
be used with highly polar solvents like acetone and MEK, ozone, chlorinated hydrocarbons and nitro hydrocarbons.
EPDM - Shows very good water and chemical resistance. Has poor resistance to oils and solvents, but is fair on
ketones and alcohols.
Neoprene - All purpose. Resistant to vegetable oil. Generally not affected by moderate chemicals, fats greases
and many oils and solvents. Generally attacked by strong oxidising acids, ketones, esters, nitro hydro carbons and
chlorinated aromatic hydrocarbons.
Santoprene® - Injection moulded thermoplastic elastomer with no fabric layer. Long mechanical flex life.
Excellent abrasion resistance.
Virgin PTFE - Chemically inert, virtually impervious. Very few chemicals are known to react chemically with
PTFE : molten alkali metals, turbulent liquid or gaseous fluorine and a few fluoro-chemicals such as chlorine
trifluoride or oxygen difluoride which readily liberate free fluorine at elevated temperatures.
Viton® - Shows good resistance to a wide range of oils and solvents : especially all alphatic, aromatic and
halogenated hydrocarbons, acids, animal and vegetable oils.
Polypropylene - High strength, light weight, corrosion resistant polyolefin which easily withstands most
chemicals, with no known solvent at room temperature.
TYPICAL CODE = B25.05. S A. B 1. N N S
MODEL
B25 : STANDARD
X25 : ATEX CAT. 2
DESIGN LEVEL
Operating Temperatures
Maximum Minimum Optimum
176oF
o
80
212oF
100
212oF
100
212oF
100
356oF
180
356oF
180
158oF
o
70
C
o
C
o
C
o
C
o
C
o
C
C
-18oF
-28
-11oF
-24
-4oF
-20
-10oF
-23
32oF
o
0
C
0oF
-18
32oF
o
0
C
o
C
o
C
o
C
o
C
o
C
50o to 140oF
o
10
to 60oC
50o to 212oF
o
10
to 100oC
50o to 130oF
o
10
to 54oC
50o to 212oF
o
10
to 100oC
50o to 212oF
o
10
to 100oC
75o to 212oF
o
24
to 100oC
50o to 140oF
o
10
to 60oC
VALVE SEATS
S : 316L STAINLESS STEEL
WETTED COMPONENTS
A : ALUMINIUM
S : 316L STAINLESS STEEL
C : CAST IRON
NON - WETTED COMPONENTS
A : ALUMINIUM
S : 316L STAINLESS STEEL
VALVE TYPE
B : BALL
W : WEIGHTED BALL
MODEL DESIGNATION
1 : BOTTOM SUCTION, W1 SERIES
This pump should be used in accordance with the requirements of the Safety, Health & Welfare at Work Act 2005.
All business conducted subject to IDEX Pump Technologies, Ireland. Terms and Conditions of Sale, available on request.
IMPORTANT
VALVE BALLS
T : PTFE E : EPDM
N : NEOPRENE V : VITON
B : BUNA-N S : ST. STEEL
D : ACETAL
DIAPHRAGMS
N : NEOPRENE V : VITON
H : POLYESTER (HYTREL) B : BUNA-N
R : SANTOPRENE
®
T : PTFE
P : POLYURETHANE E : EPDM
O : ONE-PIECE PTFE
IDEX Pump Technologies (Ireland) Ltd.,
A Unit of IDEX Corporation,
R79, Shannon, Co Clare, IRELAND.
TEL. : +353 61 471933 FAX. : +353 61 475046
Web Site : www.blagdonpump.com
E-Mail : sales@blagdonpump.com
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