SANDPIPER MHDF25 User Manual

II 2GD T5

SERVICE & OPERATING MANUAL

See pages 2, 16 & 17
for ATEX ratings

Model MHDF1 Type 1

Original Instructions

Mod e l MHDF25 Typ e 1

Table of Contents

Engineering Data, Temperature Limitations & Performance Curve ....................... 1

Explanation of Pump Nomenclature ...................................................................... 2

Dimensions ............................................................................................................ 3

Principle of Operation ............................................................................................ 4

Installation and Start-Up ........................................................................................ 4

Air Supply .............................................................................................................. 4

Installation Guide ................................................................................................... 5

Air Inlet & Priming .................................................................................................. 6

Air Exhaust ............................................................................................................ 6

Between Uses ....................................................................................................... 6

Flap Valve Servicing .............................................................................................. 6

Diaphragm Servicing ............................................................................................. 6

Air Valve Lubrication .............................................................................................. 7

Recommended Accessories .................................................................................. 7

ESADS+Plus

®

:

Externally Serviceable Air Distribution System ................................ 7

Pilot Valve .............................................................................................................. 8

Pilot Valve Actuator ................................................................................................8

Service Instructions: Troubleshooting ................................................................... 8

Warranty ................................................................................................................ 8

Important Safety Information ................................................................................. 9

Recycling ............................................................................................................... 9

Grounding The Pump .......................................................................................... 10

Material Codes .................................................................................................... 11

Composite Repair Parts List ...........................................................................12-13

Composite Repair Drawing.................................................................................. 14

CE Declaration of Conformity - Machinery .......................................................... 15

CE Declaration fo Conformity - ATEX .................................................................. 16

Explanation of ATEX Certication ........................................................................ 17

Warren Rupp, Inc. • A Unit of IDEX Corporation • 800 N. Main St., Manseld, Ohio 44902 USA

Telephone [phone] • Fax [phone] • www.warrenrupp.com

mhdf1dl1sm-rev0711

©Copyright 2010 Warren Rupp, Inc. All rights reserved.

II 2GD T5

Quality System

ISO9001 Certied

Environmental

Management System

ISO14001 Certied

See pages 2, 16 & 17
for ATEX ratings

MHDF1 Type 1
MHDF25 Type 1

Heavy Duty
Flap Valve

Air-Operated
Double Diaphragm Pump

ENGINEERING, PERFORMANCE
& CONSTRUCTION DATA

INTAKE/DISCHARGE PIPE SIZE

MHDF1: 1” NPT(F)

MHDF25: 1” BSP Tapered

PSI

BAR

7

100

10(17)

100 PSI
(6.8 Bar)

6

80

80 PSI

60

40

(5.44 Bar)

60 PSI
(4.08 Bar)

40 PSI
(2.72 Bar)

5

4

HEAD

3

2

CAPACITY

0 to 70 gallons per minute
(0 to 265 liters per minute)

AIR CONSUMPTION
SCFM (M3/hr)

20(34)

30(51)

AIR VALVE

No-lube, no-stall

design

40(68)

SOLIDS-HANDLING

1” (25.4mm)

MODEL HDF1 Performance Curve

water at ambient temperature. Average displacement per pump stroke: .10 Gallons (.38 Liters).

The use of other materials and varying hydraulic conditions may result in deviations in excess of 5%.

Performance based on the following: elastomer fitted pump, flooded suction,

50(85)

HEADS UP TO

125 psi or 289 ft. of water

2

(8.8 Kg/cm

or 88 meters)

DISPLACEMENT/STROKE

.10 Gallon / .38 liter

20

20 PSI Air Inlet Pressure

1

0

(1.36 Bar)

0

0 10 20 30 40 50 60 70 80

U.S. Gallons per minute

0 100755025 150125 200175 225 250 275 275

Liters per minute

CAPACITY

mhdf1dl1sm-rev0711 Models MHDF1 & MHDF25 Page 1

II 2GD T5

Explanation of Pump Nomenclature, MHDF1 & MHDF25

To order a pump or replacement parts, first enter the Model Number MHDF1, or MHDF25, followed by the Type Designation listed below in the far left column.

Type Manifold & Outer Inner Outer Inner Intermediate Diaphragm Valve Hard- Diaphragm Flap Seat/ Air Air Shipping
Elbow Chamber Chamber Diaphragm Diaphragm Housing Rod Seat ware Valve Manifold Valve Valve Wt. (lbs)
Plate Plate Material Seal Cap

DB1A. 356-T6AL 356-T6AL AL380DC AL380DC PS AL380DC 416SS SS PS B B B PE AL380DC 48
DI1A. 356-T6AL 356-T6AL AL380DC AL380DC PS AL380DC 416SS SS PS I I I PE AL380DC 48
DN1A. 356-T6AL 356-T6AL AL380DC AL380DC PS AL380DC 416SS SS PS N N N PE AL380DC 48
DV1A. 356-T6AL 356-T6AL AL380DC AL380DC PS AL380DC 416SS SS PS V V V PE AL380DC 48
DP1A. 356-T6AL 356-T6AL AL380DC AL380DC PS AL380DC 416SS SS PS S S I PE AL380DC 48
DR1A. 356-T6AL 356-T6AL AL380DC AL380DC PS AL380DC 416SS SS PS H H N PE AL380DC 48
DA1A. 356-T6AL 356-T6AL AL380DC AL380DC PS AL380DC 416SS SS PS N U N PE AL380DC 48
DB1I. CI CI AL380DC AL380DC PS AL380DC 416SS SS PS B B B PE AL380DC 61
DI1I. CI CI AL380DC AL380DC PS AL380DC 416SS SS PS I I I PE AL380DC 61
DN1I. CI CI AL380DC AL380DC PS AL380DC 416SS SS PS N N N PE AL380DC 61
DV1I. CI CI AL380DC AL380DC PS AL380DC 416SS SS PS V V V PE AL380DC 61
DP1I. CI CI AL380DC AL380DC PS AL380DC 416SS SS PS S S I PE AL380DC 61
DR1I. CI CI AL380DC AL380DC PS AL380DC 416SS SS PS H H N PE AL380DC 61
DA1I. CI CI AL380DC AL380DC PS AL380DC 416SS SS PS N U N PE AL380DC 61
DB1S. SS SS AL380DC AL380DC PS AL380DC 416SS SS PS B B B PE AL380DC 64
DI1S. SS SS AL380DC AL380DC PS AL380DC 416SS SS PS I I I PE AL380DC 64
DN1S. SS SS AL380DC AL380DC PS AL380DC 416SS SS PS N N N PE AL380DC 64
DV1S. SS SS AL380DC AL380DC PS AL380DC 416SS SS PS V V V PE AL380DC 64
DP1S. SS SS AL380DC AL380DC PS AL380DC 416SS SS PS S S I PE AL380DC 64
DR1S. SS SS AL380DC AL380DC PS AL380DC 416SS SS PS H H N PE AL380DC 64
DA1S. SS SS AL380DC AL380DC PS AL380DC 416SS SS PS N U N PE AL380DC 64
DB1II. CI CI CI CI PS CI 416SS SS PS B B B PE PE 76
DI1II. CI CI CI CI PS CI 416SS SS PS I I I PE PE 76
DN1II. CI CI CI CI PS CI 416SS SS PS N N N PE PE 76
DV1II. CI CI CI CI PS CI 416SS SS PS V V V PE PE 76
DP1II. CI CI CI CI PS CI 416SS SS PS S S I PE PE 76
DR1II. CI CI CI CI PS CI 416SS SS PS H H N PE PE 76
DA1II. CI CI CI CI PS CI 416SS SS PS N U N PE PE 76
DB1SI. SS SS CI CI PS CI 416SS SS PS B B B PE PE 79
DI1SI. SS SS CI CI PS CI 416SS SS PS I I I PE PE 79
DN1SI. SS SS CI CI PS CI 416SS SS PS N N N PE PE 79
DV1SI. SS SS CI CI PS CI 416SS SS PS V V V PE PE 79
DP1SI. SS SS CI CI PS CI 416SS SS PS S S I PE PE 79
DR1SI. SS SS CI CI PS CI 416SS SS PS H H N PE PE 79
DA1SI. SS SS CI CI PS CI 416SS SS PS N U N PE PE 79

Meaning of Abbreviations:

AL = Aluminum
B = Nitrile
CI = Cast Iron

DC = Die Cast
H = Hytrel
I = EPDM

N = Neoprene
PE = Conductive HDPE
PS = Plated Steel

S = Sanotprene
SS = Stainless Steel

U = Urethane
V = FKM

Maximum and Minimum Temperatures are the limits for which
these materials can be operated. Temperatures coupled with
pressure affect the longevity of diaphragm pump components.
Maximum life should not be expected at the extreme limits of
the temperature ranges.

Materials

Nitrile/FDA White Nitrile 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 oil and solvents, but is fair in ketones and alcohols.

NEOPRENE All purpose. Resistant to vegetable oils. Generally not affected
by moderate chemicals, fats, greases and many oils and solvents. Generally
attacked by strong oxidizing acids, ketones, esters, nitro hydrocarbons and
chlorinated aromatic hydrocarbons.

®

Good on acids, bases, amines and glycols at room temperature.

HYTREL

FKM (Fluorocarbon) shows good resistance to a wide range of oils and solvents;

especially all aliphatic, aromatic and halogenated hydrocarbons, acids, animal
and vegetable oils. Hot water or hot aqueous solutions (over 70°F) will attack FKM.

Shows good resistance to abrasives. Has poor resistance to most

Urethane

solvents and oils.

®

Santoprene

Long mechanical flex life. Excellent abrasion resistance.

CF-8M Stainless Steel equal to or exceeding ASTM specification A743 for corrosion resistant iron chromium, iron
chromium nickel, and nickel based alloy castings for general applications. Commonly referred to as 316 Stainless Steel in the pump industry.

For specific applications, always consult “Chemical Resistance Chart" Technical Bulletin

Injection molded thermoplastic elastomer with no fabric layer.

II 1 G c T5
II 3/1 G c T5
II 1 D c T100oC
I M1 c

Models equipped with Cast Iron or Stainless
Steel wetted parts and Cast Iron midsection
parts. See page 17 for ATEX Explanation of
EC-Type Certicate.

II 2 G c T5
II 3/2 G c T5
II 2 D c T100oC

All models, including pumps equipped with Aluminum
wetted and midsection parts.
See page 17 for ATEX Explanation of Type Examination
Certicate.

Operating Temperatures

Maximum

190°F

88°C

280°F
138°C

200°F

93°C

220°F

104°C

350°F
177°C

150°F

66°C

275°F
135°C

I M2 c

Minimum

-10°F

-23°C

-40°F

-40°C

-10°F

-23°C

-20°F

-29°C

-40°F

-40°C

32°F
0°C

-40°F

-40°C

mhdf1dl1sm-rev0711 Models MHDF1 & MHDF25 Page 2

Dimensions: MHDF1 & MHDF25

10.80

AIR INLET
1/2" NPTF

16.73
425

8.56
217

DISCHARGE PORT
1" NPTF (HDF1)
1" BSPF (HDF25)

4X

AIR EXHAUST

3/4" NPTM

15.67
398

6.89
175

2.57
65

.28 [7] MOUNTING HOLE

274

5.80
147

2.38
60

5.54
141

Dimensions are  1/8"

Figures in parenthesis = millimeters

2.38
60

SUCTION PORT
1" NPTF (HDF1)
1" BSPF (HDF25)
(OPTIONAL 90

14.03
356

8.57
218

.72

18

PORT ROTATION)

16.41
417

9.00
229

Model MHDF1 features
NPT threaded connections.

Model MHDF25 features
British Standard Pipe
(BSP) Tapered threaded
connections.

Note:

Unit furnished with sub­base plate and rubber feet
as standard. For stationary
bolt down use, rubber feet
can be removed.

MHDF1: 1" NPT(F) SUCTION AND DISCHARGE • ½" NPT (F) AIR INLET PORT • ¾" NPT (F) AIR EXHAUST PORT (NOT SHOWN)
MHDF25: 1" BSP(F) TAPERED SUCTION AND DISCHARGE • ½" NPT (F) AIR INLET PORT • ¾" NPT (F) AIR EXHAUST PORT (NOT SHOWN)

mhdf1dl1sm-rev0711 Models MHDF1 & MHDF25 Page 3

II 2GD T5

SERVICE & OPERATING MANUAL

See pages 2, 16 & 17
for ATEX ratings

Model MHDF1 Type 1

Mod e l MHDF25 Typ e 1

PLEASE NOTE!

The photos shown in this manual are for general instruction only. Your specic model

may not be shown. Always refer to the parts list and exploded view drawing for your
specic model when installing, disassembling or servicing your pump.

PRINCIPLE OF PUMP OPERATION

This ball valve pump is powered by compressed air and is a 1:1 pressure ratio design.

It alternately pressurizes the inner side of one diaphragm chamber, while simultaneously
exhausting the other inner chamber. This causes the diaphragms, which are connected
by a common rod, to move endwise. Air pressure is applied over the entire surface
of the diaphragm, while liquid is discharged from the opposite side. The diaphragm
operates under a balanced condition during the discharge stroke, which allows the unit
to be operated at discharge heads over 200 feet (61 meters) of water head.

Since the diaphragms are connected by a common rod, secured by plates to the

center of the diaphragms, one diaphragm performs the discharge stroke, while the other
is pulled to perform the suction stroke in the opposite chamber.

For maximum diaphragm life, keep the pump as close to the liquid being pumped

as possible. Positive suction head in excess of 10 feet of liquid (3.048 meters) is not
recommended. For applications with higher suction heads, consult the factory.

Alternate pressuring and exhausting of the diaphragm chamber is performed by

means of an externally mounted, pilot operated, four-way spool type air distribution
valve. When the spool shifts to one end of the valve body, inlet air pressure is applied to
one diaphragm chamber and the other diaphragm chamber exhausts. When the spool
shifts to the opposite end of the valve body, the porting of chambers is reversed. The air
distribution valve spool is moved by an internal pilot valve which alternately pressurizes
one side of the air distribution valve spool, while exhausting the other side. The pilot
valve is shifted at each end of the diaphragm stroke by the diaphragm plate coming in
contact with the end of the pilot valve spool. This pushes it into position for shifting of
the air distribution valve.

The chambers are manifolded together with a suction and discharge check valve for

each chamber, maintaining ow in one direction through the pump.

Original Instructions

INSTALLATION & START-UP

Locate the pump as close to the product being pumped as possible, keeping suction

line length and number of ttings to a minimum. Do not reduce line size.

For installations of rigid piping, short exible sections of hose should be installed

between pump and piping. This reduces vibration and strain to the piping system. A
MARATHON surge suppressor is recommended to further reduce pulsation in ow.
Tighten all fasteners before pump startup.

This pump was tested at the factory prior to shipment and is ready for operation. It

is completely self-priming from a dry start for suction lifts of 17 feet (5.8 meters) or less.
For suction lifts exceeding 17 feet of liquid, ll the chambers with liquid prior to priming.

mhdf1dl1sm-rev0711 Models MHDF1 & MHDF25 Page 4