Page 1
DEMA MODEL 661GAP-4-PIA BLEND SAFE FOR
THE CALIFORNIA PRISON SYSTEM
The 66 1 Series locka ble stain less steel d ispensers offer safet y and security when it’s necessa ry for gal lon bottles t o be selfcontained inside the dispenser.
1) PARTS CHECKLIST:
A. Blend Safe Assembly (1)
2) INSTALLATION: (Refer to Figure 1)
Note: All installations must conform to local plumbing codes and use approved backflow preventers. A
pressure indi cating tee is to be i nstalle d with existing f aucets according t o local plumbing codes i n the state of
Wisconsin and any other state that requir e s the use of a pressure indicating tee.
WARNING: Water supply should not exceed 125 psi and water temperature must not exceed 150°F.
A. MOUNTING AND WATER SUPPLY:
Hold the unit in position to locate the mounting screw position at the top and bottom. Drill all of the holes and
install the mounting screws at the top, leaving approximately 1/2” extension between the wall and screw head.
Mount the Blend Safe by inserting the screw heads through the keyhole slots in the top and tightening the screws.
Now insert and tighten the bottom screws.
The water inlet is equipped with a female garden hose fitting (with strainer washer) for attaching a water supply
hose. The unit is designed so water can be supplied to either side by interchanging the pipe plug and the female hose
fitting. Note: Apply pipe dope, hand tighten, and then turn 1-1/2 times with a wrench. DO NOT
OVERTIGHTEN.
WARNING: Do not use Teflon® tape to seal inter nal plastic threads as the extra thickness of the tape may
cause the plastic t o crack. Use a nonwelding liquid sealant instead.
B. CHEMICAL INJECTION ADJUSTMENT:
Chemi cal feed rates are con trolled by metering tips screwed int o the proportioner barb. Select a tip usin g Table 1 or 2
as a guid e.
1 cps (centipoise) is equal to the vis cosi ty of water
75 cps is approximately equal to the viscosity of 10 weight motor oil
200 cps is approximately equal to the viscosity of most dishwashing detergents
C. CHEMICAL SUPPLY:
Place th e chem ical conta iner in sid e the case an d inser t th e foot val ve an d cerami c weigh t end of the ch emica l suppl y
tubin g into th e chemical container.
Warning: use care when handling hazardous chemic als.
TABLE 1 - 1 GPM FLOW RATE PROPORTIONER, 1/4” I.D. TUBING
Meterin g T ip
Color
Tan
Orange
Turquoise
Pink
Light Blue*
Brown
Red
White
Green
Blue
Yellow
Black
Purple
Gray
No Tip
1 cps 75 cps 200 cps
Oz/Gal Ratio Oz/Gal Ratio Oz/Gal Ratio
1.03 125-1 0.76 168-1 0.38 333-1
1.24 103-1 0.98 130-1 0.53 241-1
1.43 89-1 1.07 119-1 0.61 211-1
2.47 52-1 1.58 81-1 0.92 139-1
3.05 42-1 2.1 61-1 1.06 121-1
3.48 37-1 2.31 55-1 1.15 111-1
4.38 29-1 2.83 45-1 1.23 104-1
5.33 24-1 3.1 42-1 1.37 93-1
6.38 20-1 3.63 35-1 1.4 91-1
6.77 19-1 3.78 34-1 1.45 88-1
9.90 13-1 5.1 25-1 1.48 86-1
15.00 9-1 6.54 20-1 1.53 84-1
24.94 5-1 7.28 18-1 1.57 82-1
35.94 4-1 8.5 15-1 1.64 78-1
73.21 2-1 9.35 14-1 1.87 69-1
Injection Rates For Vi sc ositie s Shown
NOTE: *Metering tip color was formerly clear. All induction rates are based on a water pressure of 40 psi.
Leaner dilutions can be achieved by ordering DEMA ultra lean tip kit 100-15KU or capillary tip 44-61P.
I-890 Pg. 1 of 5
Rev. C-36327 11/19/10
Page 2
DEMA MODEL 661GAP-4-PIA BLEND SAFE FOR
THE CALIFORNIA PRISON SYSTEM
TABLE 2 - 4 GPM FLOW RATE PROPORTIONER, 1/4” I.D. TUBING
Meterin g T ip
Color
Tan
Orange
Turquoise
Pink
Light Blue*
Brown
Red
White
Green
Blue
Yellow
Black
Purple
Gray
No Tip
1 cps 75 cps 200 cps
Oz/Gal Ratio Oz/Gal Ratio Oz/Gal Ratio
0.33 387-1 0.26 500-1 0.12 1090-1
0.42 307-1 0.32 430-1 0.17 735-1
0.51 251-1 0.34 382-1 0.19 676-1
0.78 165-1 0.56 230-1 0.3 422-1
0.87 147-1 0.67 192-1 0.33 391-1
0.99 129-1 0.74 174-1 0.37 345-1
1.37 93-1 0.91 141-1 0.44 289-1
1.52 84-1 1.04 123-1 0.48 264-1
1.72 74-1 1.22 105-1 0.52 244-1
2.13 60-1 1.27 101-1 0.54 239-1
3.05 42-1 1.71 75-1 0.56 229-1
4.50 28-1 1.96 65-1 0.57 224-1
7.75 17-1 2.4 53-1 0.59 217-1
9.86 13-1 2.54 50-1 0.63 204-1
19.63 7-1 3.16 40-1 0.67 190-1
3) OPERATION:
The Blend Safe is now ready for use. Depressing a push button opens the valve allowing water to flow through the
chemical proportion er that mixes a chemical wa ter solu tion at the desired rate. Th e buttons are spring loa ded to prevent
accidental overflow if unattended.
Injection Rates For Vi sc ositie s Shown
4) SERVICING:
Caution: Turn off water supply before servicing.
A. Proportioner fails to draw chemical:
1. Pinch outlet tube to create back pressure, which will cause unit to prime. The foot valve will keep the tube primed.
2. Insufficient water supply pressu re. 20 PSI is the minimum allowable.
B. Proportioner stops drawing chemical:
1.Insp ect foot valve f or dried ch emical or dirt. Soak in hot wa ter to clean .
2. Proportioner metering tip clogged with dried chemical. Remove tip and try injecting in hot water. If there is no
suction, remove proportioner and soak in hot water to clear interior passages.
3.Inspect proportioner to ensure that there are no mineral deposit build-ups on the nozzle. If so, soak proportioner
body in deliming solution. (Remove all parts attached to proportioner before soaking in deliming solution.) Note:
Use care when handling hazar dous chemicals.
C. Valve Malfunction:
Check tha t the button m oves freely in an d out and that a " click" can be h eard when th e button is p ush ed an d r el ea sed ,
indicating that the magn et is activating the plunger properly. Rem ove cover. To inspect in ternal parts, unscrew
magnet housing and carefully pull off the enclosing tube so as not to drop the plunger, kick-off spr ing, and spacer.
Check for dirt or damage impeding plunger and kick-off spring movement. Inspect the diaphragm, making sure the
two small pinholes (bleed hole) in the diaphragm convolution are clear to allow the valve to close.
Caution: When servicing unit, be sure that replacement parts have been installed according to the drawing.
RETURNS: NO MERCHANDISE MAY BE RETURNED FOR CREDIT WITHOUT DEMA’S WRITTEN PERMISSION. RETURN
WARRANTY: DEMA pr odu cts ar e warr ant ed a gain st de fecti ve ma ter ial a nd work ma nshi p u nder nor mal u se a nd ser vic e for on e yea r fro m the da te o f
MERCHANDISE AUTHORIZATION NUMBER REQUIRED IN ADVANCE OF RETURN.
manufactur e. This limited wa rra nty does n ot a p ply t o an y product s whi c h h a ve a no rmal life s hor te r t ha n on e y ear or failure and dama g e
cause d by che mica ls, c orr osion, impr oper volta ge su ppl y, phy sica l abu se, o r misa ppli cati on. Ru bber a nd sy nthe tic ru bber part s such a s
“o”- rin gs, diap hragms, squeeze tu bing an d gasket s are con sidered e xpend able and ar e not cover ed under warran ty. This wa rranty i s
extended only t o the original bu yer of DEMA product s. If products ar e altered or re paired withou t prior appro val of DEMA, this
warranty will be void.
Defective unit s o r pa rts shoul d b e re tu r n e d to t h e fa ct or y wi th trans po rta tion prepa i d. If inspec ti on s ho ws t h e m to be d e f ective, the y will
be repair ed or rep laced wit hout char ge, F.O.B . factor y. DEMA assu mes no l iabilit y for damag es. Return merchan dise autho rizati on
number, to return units for repair or replacement, must be granted in a dvance of return.
I-890 Pg. 2 of 5
Rev. C-36327 11/19/10
Page 3
DEMA MODEL 661GAP-4-PIA BLEND SAFE FOR
THE CALIFORNIA PRISON SYSTEM
INLET HOSE ADAPTER
STRAINER WASHER
CHEMICAL CONT AINE R
CERAMIC WEIGHT
CHEMICAL SUPPLY TUBE,
FOOTVALVE, & CERAMIC
WEIGHT
NOTE: ALL COVERS REMOVED FOR CLARITY
BUTTON ACUATOR
ACTION GAP
PROPORTIONER
1 GPM
OUTLET TUBING (3)
MOUNTING HOLES
4 GPM
OUTLET TUBING
FOOTVALVE
I-890 Pg. 3 of 5
Rev. C-36327 11/19/10
Page 4
DEMA MODEL 661GAP-4-PIA BLEND SAFE FOR
THE CALIFORNIA PRISON SYSTEM
(Specify
Color)
(Specify
Color)
6
11
14
31
1
2
3
4
5
7
8
9
10
17
16
15
18
33
12
13
NO. PART NO. DECRIPTION
1 66-139 Magnet Housing (Specify Color)
2 66-140 Push Button (Specify Color)
3 63-35 Magnet
4 63-36 Spring
5 41-7-25 Enclos ing Tube
6 63-87 Valve Repair Kit
7 63-37 Spacer
8 41-1-8 Kick-off Spring
9 63-38 Plunger
10 41-15-10 Diaphragm
11 63-39 Valve Body
12 100-38 Strainer Washer
13 - ½” FPT x GHT
14 66-27 Bushing 3/8” FPT x ½” MPT
15 66-31 Nipp le 3/8” NPT
16 99-5- 3 Pipe Nipple 3/8”NPT
* Foot Va lve also available with silicone (100-16S-2) or Viton
(100-16V-2) rubber seals. Please specify material when ordering
NO. PART NO. DECRIPTION
17 66-153 Pipe Plug & O-Ring Assy.
18 65-16 45 Deg. Male x Female 6H Adapter
19 16-30 Action GAP Backflow Preventer
20 61-22-3 4 GPM Dbl Barb Proportioner – ¼” Barb
21 61-99-2 1 GPM Dbl Barb Proportioner – ¼” Barb
22 63-78 O- Ring EPT 7/16” x 9/16” x 1/16”
23 63-79 Inlet Barb ¼”
24 100-15-3
100-15-9
25 66-323 ½”ID Vinyl Outlet Tube (4 GPM Only)
26 66-322 ½” ID X 3” Lg. Vinyl Outlet Tube
27 66-28 ¼” ID X 21” Lg. Vinyl Supply Tubing
28 61-107-2 Cera mic Weig ht
29* 100-16E-2 Foot Va lve
30 61-12 Snap Busing (Outlet Tube)
31 61-13 Snap Bushing (Push Button)
32 76-2-1 Clamp
33 65-2 Ball Valve 3/8NPT
Pink Tip for 1 GPM Proportioner
Blue Tip for 4 GPM Proportioner
(1 GPM Only)
I-890 Pg. 4 of 5
Rev. C-36327 11/19/10
Page 5
DEMA MODEL 661GAP-4-PIA BLEND SAFE FOR
THE CALIFORNIA PRISON SYSTEM
5
1
1
2
3
1
2
3
4
5
6
150-6
61-36 Flow Disk
66-322
66-323
63-89-1
16-30
Rubber Washer
1/2" I.D. x 3" Lg. Vinyl Outlet Tube (1 GPM Only)
1/2" I.D. Vinyl Outlet Tube (4 GPM Only)
Rubber Washer (1/32" Thick)
Action Gap Assembly
4
6
I-890 Pg. 5 of 5
Rev. C-36327 11/19/10
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