AT 100 PSI INLET AIR
The MSRP-B8 Multi-Stream, Variable-Ratio Grout Pump from Strata
Tech is a high volume, variable pressure, air-powered grout pump.
An MSRP (sometimes called a rocker pump) is a grout
placement tool capable of receiving two, three, or even four material
inputs, moving the inputs in variable quantities through separate
hoses, and then combining them to form a single injection material
in a predetermined variable ratio at the point of application The
ratios of all the various input fluid streams can be changed in
the field by the applicator as conditions warrant.
The heart of an MSRP pump is a rocking steel grid having several
rails, each of which connects the power supply output shaft to the
various pistons. Each piston can be of any appropriate displacement,
but all pistons have the same maximum stroke length. Additionally,
each piston may be moved to reposition it along the rails of the
rocking grid. This movement changes that pistons stroke length
and, therefore, changes the displacement of that cylinder. By varying
the diameters and the positions of the cylinders, a very broad range
of ratios can be achieved among the fluids.
The output pressure/volume relationship of an MSRP is ultimately
governed by the choice of the air motor, with Binks B-8 and B-10
motors being most common.
The MSRP-B8 Pump will move any chemical grout available today and
will also handle some particulate grouts containing suspended solids.
The MSRP is useful for a wide range of water control and soil stabilization
applications, including grout curtains, stabilizing water-bearing
soils, and sealing cracks or joints in concrete walls, buildings,
dams and utility vaults. For higher pressure and volume requirements,
the B-10 may be indicated.
The MSRP-B8 uses stainless steel in the wet ends of the pump and
for many of its fittings. Stainless steel is recommended for long-wearing
parts. Most Stratathane grout materials are not much more corrosive
than water. Cleanup of solidified material in the system, however,
sometimes requires caustic cleaning compounds, making stainless
The standard MSRP component list is as follows:
1 ea Binks B-8 air motor
2 ea D fluid pump assembly
1 ea Slave Fluid Pump #5 with stainless check balls
1 ea Rocker Frame with cage
1 ea large wheel kit
1 ea Caster wheel kit with brakes
The MSRP-B8 Multi-Stream Pump includes a cart mounted Binks B-8
fixed ratio power head. The standard configuration is equipped with
one A-sized and two D-sized wet ends. Maximum
inlet pressure is 150 psi. Output pressures vary depending upon
the grout mix ratio being placed and air inlet pressure. Some approximate
values for 100 psi inlet air pressure are found on the following
combinations of wet ends will produce several different output ratios,
including 12:1 (A-DD) and 1:1 (D-D). Fluid output is a rated four
g.p.m. at 60 pump cycles per minute. The pump is equipped with an
air regulator assembly, three 4' x 1" intake hoses with pail
siphon tubes, and three 4' x 1/2" fluid recirculating hoses
with pail tubes.
unit also includes two fluid outlet manifolds with 3000 psi fluid-filled
gauges, ball valves for fluid supply or recirculating, and quick-disconnect
fittings at all points required. Another fluid outlet manifold contains
the same trim plus a stainless steel pressure relief valve and a
wye adaptor assembly.
The discharge detail includes a 50' x 3/8" high pressure hose
with quick disconnects and a 50' x 1/2" high pressure hose
similarly fitted. The unit also comes with a packing nut wrench.
Each unit is fully assembled and pressure tested prior to crating
The MSRP-B8 Multi-Stream Pump is assembled primarily from components
made by major pump manufacturers, including Graco, Inc. and Binks.
Repair parts are available from Strata Tech, but the use of assemblies
from these major manufacturers helps assure that spare parts will
be available nearby in the event of an unforseen breakdown.
Certain spare parts and consumables are recommended for inclusion
with each unit at the time of shipment. A few of these are listed
below. Others may be advisable depending on the application and
the work site location. If in doubt, discuss your situation and
site requirements with your Strata Tech sales representative.
QTY PART DESCRIPTION
2 "D" Cylinder Minor Repair Kit
1 "A" Cylinder Minor Repair Kit
1 Hose - 25' x 3/8"
1 Hose - 25' x 1/2"
1 Gauge - 3000 psi
1 Wye Assembly
Grout should not stand in equipment more than 12 hours without precautions
because the possibility of moisture contamination is high. Flush
equipment with ST-590 purging fluid and ST-522 Cleaner soon after
use. Check solvents for water content prior to use.
When using solvents during cleanup, extinguish all ignition sources
and observe proper precautions for handling such materials. For
cleanup of cured resins, soak in a 100% solution of ST-522 Veri-Kleen
Grout Cleaner using a covered polyethylene container. Grout spills
on clothing are permanent, so disposable coveralls are recommended.
to Grout Pumps
Strata Tech believes that the information herein is an accurate
description of the general properties and characteristics of the
product(s), but the user is responsible for obtaining current information
because the body of knowledge on these subjects is constantly enlarged.
Information herein is subject to change without notice. Field conditions
also vary widely, so users must undertake sufficient verification
and testing of the product or process herein to determine performance,
safety, usefulness, and suitability for their own particular use.
Strata Tech warrants only that the product will meet Strata Techs
then-current specification. NO WARRANTY OF SUITABILITY OR FITNESS
FOR A PARTICULAR PURPOSE IS MADE. Users should not assume that all
safety requirements for their particular application(s) have been
indicated herein and that other or additional actions and precautions
are not necessary. Users are responsible for always reading and
understanding the Material Safety Data Sheet, the product technical
literature, and the product label before using any product or process
mentioned herein and for following the instructions contained therein.
Copyright C 1990 by Strata Tech, Inc. All rights reserved. No part
of this publication may be reproduced or disseminated in any form,
by any means, or stored in any electronic format without prior written
permission from Strata Tech except as allowed under the U.S. Copyright
Act, 1976. Printed in USA. REV 011102.