Solinst 408 SS, 408 PVC Operating Instructions Manual

408 1.66” (Pg 1)
(#103060 )

High Quality Groundwater and Surface Water Monitoring Instrumentation

Operating Principles

When the Solinst Double Valve Pump (DVP) is placed in a well or
borehole, water rises inside the pump and the twin tubes to static
level. A Control Unit is used to deliver compressed gas to the
pump. During the drive period the gas pushes down on the water
column contained in the drive line tubing, closing the check valve at
the base of the pump. This forces water up the sample line tubing.

A vent period, during which the gas is released, allows hydrostatic
pressure to refill the pump and drive line with sample water. The
top check valve prevents water in the sample line from falling back
into the pump body. This pressurization and vent cycle is repeated
manually or automatically as set by the timers on the Control Unit.
The cycle may be regulated for purging or sampling.

1.66” Double Valve Pump Operating Instructions

Model 408 SS and PVC 1.66”dia.

Notes: 1. The maximum lift for stainless steel (SS) pumps is 500 ft.

(150 m), and 100 ft. (30 m) for the PVC model.

2. DO NOT exceed an operating pressure of 250 psi for the SS

model and 50 psi for the PVC model.

3. The pump has been decontaminated before leaving Solinst
however, you may wish to decontaminate your pump before
use. The pump should be decontaminated between wells.

4. Tube fittings are based on use of 3/8" drive line and 1/4" sample
line. A 3/8" to 1/4" adaptor is also supplied,if dual 1/4" tubing
is preferred.

5. Refer to the operating instructions in the lid of the Solinst
Model 466 Control Unit for detailed pumping instructions.

Pump Operation

Portable: The Pump will be attached to skip-bonded, dual 1/4" OD
LDPE tubing, mounted on a reel.

a) For the stainless steel model

, push the tubing inserts into the
end of the tubing and into the drive and sample compression
fittings of the DVP (the nuts of the compression fittings may
have to be loosened before inserting the tubing). Tighten the
nut 1-1/4 turns past finger tight for proper seal (see overleaf).

b) Lower the assembled DVP into the well, using a stainless steel

safety line. The Solinst Model 103 Tag Line can be used for
this purpose.

c) Connect the supply line with the in-line dryer from the

compressed gas source to the Control Unit. The drive line
connects from the Control Unit to the reel.

d) Attach a short (3 ft. or 1 m) length of 1/4" OD sample line to

the sample connector on the reel.

Dedicated:

The Pump will come with a roll of tubing to be cut to

length, as required, for attachment to a Wellhead.

a) Cut the tubing to desired length. See step a) above for tubing

connection instructions to the stainless steel Pump.

For the PVC

model, attach the 1/4" sample tubing to the
compression fitting on the DVP and slide the 3/8" drive line
tubing onto the barbed fitting and secure with the single ear
Oetiker Clamp (see overleaf).

b) Attach the sample and drive lines to the appropriate Push

Fittings on the underside of the Wellhead.

c) Lower the DVP into the well, using a stainless steel safety line

if desired. If useful, attach the safety line to the suspension hook
on the underside of the Wellhead. Push the Wellhead firmly
onto the riser casing.

d) Attach a short (3 ft. or 1 m) length of 1/4" OD sample line to

the sample connector on the Wellhead. (See diagram at right
for use of Push Fittings.)

e) Connect the supply line with the in-line dryer from the

compressed gas supply to the Control Unit. The drive line
connects from the Control Unit to the top of the Wellhead.

f) For detailed pumping instructions, please see the Solinst Model

466 Control Unit Operating Instructions.

Double Valve
Pump in Well

Air Compressor

or Cylinder

Tubing Reel

Sample Line

Drive

Line

Electronic

Control Unit

1/4" Push Fit
Adaptor

1/4" Push Fit Adaptor

Suspension
Hook

Drive Line
Quick Connect

Portable Sampling Setup

Dedicated Wellhead Setup

Wellheads come with two Push Fit Adaptors so that either
1/4" or 3/8" tubing can be used, as preferred.

To attach tubing just push into Push Fitting.
To release tubing push down on both sides of
the Top Ring and pull tubing out.

0.7" (18 mm)
Access Hole

3/8" Push Fit

Connector

3/8"
Push Fit
Sample Line
Connector

®

Solinst is a registered trademark of Solinst Canada Ltd.

Supply

Line

Disassembly

1. Remove the Top Platen from the Pump Body and Riser.
Remove the Pump Body from the Bottom Platen and slide it
off the Riser.

2. Remove the Riser from the Valve Body, being careful not to
lose the Check Ball.

3. Remove the Valve Body from the Bottom Platen, being sure
not to lose the second Check Ball.

4. Remove the Filter Retainer from the Bottom Platen, and then
remove the Filter Mesh from the Filter Retainer.

Decontamination

1.66" SS (PVC) Double Valve Pump

1/4" Sample Line

1/4" x 3/8"
Compression

(108520)

Adaptor

Tubing Inserts for

3/8" ID, 1/4" ID

V-012

O-ring

100291

1/4" Eye Bolt

101717

3/8” Drive Line

Top Platen

103526 (103147)

V-124 O-ring

101133

Notes: 1. Always follow your local guidelines and standard protocols.

2. Do not use acetone on the O-rings.

1. Completely disassemble the pump.

2. Wash all pump components with phosphate-free soap or
a detergent.

3. Rinse all components thoroughly with deionized water and
dry.

4. Replace worn O-rings as necessary, and then reassemble.

Reassembly

1. Slide the Filter Mesh over the Filter Retainer until seated.

2. Thread the Bottom Platen onto the Filter Retainer until the
O-ring is seated and the parts are finger tight.

3. Insert a PTFE/FEP Check Ball into the top of the Bottom Platen.

4. Take the Valve Body and insert into the Bottom Platen until the O­ring firmly seats.

5. Insert a PTFE/FEP Check Ball into the top of the Valve Body.

6. Insert the bottom end of the Riser (hole downward) into the Valve
Body.

7. Slide the Pump Body over the Riser and thread onto the Bottom
Platen.

8. Take the Top Platen and while lining up the top of the Riser
into the centre of the Top Platen, thread the Pump Body to
the Top

Note: With PVC Pumps there is the option of using a stainless steel

Platen.

weight threaded into the Filter Retainer to reduce bouyancy
during operation. An optional Weight and Filter Retatiner
Assembly ( part #105881) is available from Solinst.

Centre Rod (Riser)

103528 (103059)

Check Ball 3/8”

101399

V-012

O-ring

100291

Valve Body

103529

Check Ball 3/8”OD

101399

V-124 O-ring

101133

Bottom Platen

103525 (103146)

V-116 O-ring

103493

Filter Retainer

103581 (103514)

Pump Body

103522 (103142)

50 Mesh

Filter Screen

103603

Vyon Filter

for PVC Pumps

V-012

O-ring

100291

Stainless Steel and PVC Tubing Connections

Nut

Ferrule

Tubing

Tubing Insert

Compression
Fitting Nut

(Ferrule inside)

Drive
Tubing

Eye Bolts

Compression

Fittings

Barbed

Fitting

Oetiker

Clamp

408 1.66” (Pg 2)
June 26, 2009
(#103060 )

35 Todd Road, Georgetown, Ontario Canada L7G 4R8

For further information contact: Solinst Canada Ltd.

Fax: [phone] Tel: [phone]

Web Site: www.solinst.com E-mail: [e-mail]

Top

SS

Platens

PVC

Note: Be careful not to lose the two pieces of the ferrule if

loosening or removing the nut from the compression fitting.