Page 1
DEMA 661AG-4 BLEND SAFE
INSTALLATION INSTRUCTIONS
1) PARTS:
A. Blend Safe. B. ¼" IDx19"L g. Vinyl Tubing, Foot Valve & Weig ht. (4)
C.6 ft. Viny l Tubing. (1) D. #8 Pan Head Mounting Screws & Anchors. (6)
E. Label Card. (2) F. Drip Tray.
G. Metering Tip Kit. H. Keys.
2) INSTALLATION: (Refer to Figure 1)
Note: All installations must conform with local plumbing codes and use approved backflow preventers.
Pressure indicating tee is to be install with existing faucets according to local plumbing codes in the state of Wisconsin
and any other state that requires the use of a pressure indicating tee.
A. MOUNTING AND WATER SUPPLY:
Hold the unit in position to loca te the mounting screw positions at the top & bottom. Install the mounting screws at the top,
leaving app roximately 1/8" extension betwee n the wall and screw he ad. Mount the Blend Safe by inserting the screw heads
through the key hole slots in the top and tightening the screws (See Figure 1). Now insert and tighten the screws in the bottom.
The water inlet is equipp ed with a female garden hose fitting (with strainer washer) for attaching a water supply hose. The
fitting may be removed to permit direct connection to a 3/8" NPT pipe. The unit is designed so water can be supplied to either
side by interchanging the pipe plug with the pipe and female hose fitting assembly.
B. PRESSURE INDICATING TEE INSTALL ATION:
Screw female quick disconnect to faucet and attach pressure indicating tee to female quick disconnect. Attach female end of
reinforced hose to male threads of tee, th en attach th e m ale end to the female garden hose fitting at th e wat er inlet of the Blend
Center (See Figure 3). Water supply should not exceed 125 psi and water temperature must not exceed 160°F.
C. CHEMICAL INJECTION ADJUSTMENT: Warning: use care when handl ing hazardous chemicals.
Chemical feed rates are controlled by metering tips screwed into the proportioner barb. Se le ct a t ip usi ng T able 1
or 2 as a guide. Note: 1 cps (centipoise) is equal to the viscosity of water, 75 cps is approximately equal to
the viscosity of 10 weight motor oil, and 200 cps is approximately equal to the viscosity of most
dishwashing detergents.
D. CHEMICAL SUPPLY:
Install the chemical supp ly tubing by pushing the tub ing over the b arb of the prop ortioner. The p ropor tioner is accessib le
through the case door (Refer to Figure 1). Push the tubing through the slots in the cover. Place the chemical con tai ne r in sid e the
case and insert the foot valve and ceramic weight end of the chemical supply tubing into the chemical container. Peel off
gummed labels are provided f or labeling chemicals.
TABLE 1 - (4 GPM FLOW RATE PR OPORTIONER)
Metering
Tip Color
Tan 0.30 427-1 0.20 640-1 0.15 853-1
Orange 0.40 320-1 0.30 427-1 0.25 512-1
Turquoise 0.60 213-1 0.40 320-1 0.30 427-1
Pink 0.80 160-1 0.50 256-1 0.40 320-1
Light Blue* 1.00 128-1 0.70 183-1 0.45 284-1
Brown 1.20 107-1 0.80 160-1 0.50 256-1
Red 1.50 85-1 0.90 142-1 0.60 213-1
White 1.85 69-1 1.10 116-1 0.70 183-1
Green 2.00 64-1 1.25 102-1 0.80 160-1
Blue 2.50 51-1 1.50 85-1 0.82 156-1
Yellow 4.00 32-1 1.85 69-1 0.90 142-1
Black 5.50 23-1 2.00 64-1 0.94 136-1
Purple 8.80 15-1 2.40 53-1 0.96 133-1
Gray 11.65 11-1 2.50 51-1 1.00 128-1
No Tip 16.20 8-1 3.00 43-1 1.20 107-1
Oz/Gal Ratio Oz/Gal Ratio Oz/Gal Ratio
1 cps 75 cps 200 cps
Injection Rates For Viscosities Shown
Note: * Metering tip color was formerly clear.All induction rates are base on a water pressure of 40 psi.
Leaner dilutions can be achieved by ordering DEMA ultra lean tip kit 100-15KU.
I-611 Pg. 1 of 6
Rev. C-36327 11/18/ 10
Page 2
DEMA 661AG-4 BLEND SAFE
INSTALLATION INSTRUCTIONS
TABLE 2 - (1 GPM FLOW RATE PR OPORTIONER)
Metering Tip
Color
Tan 1.25 102-1 0.90 142-1 0.60 213-1
Orange 1.70 75-1 1.20 107-1 0.80 160-1
Turquoise 2.15 60-1 1.55 83-1 1.10 116-1
Pink 3.00 43-1 2.00 64-1 1.50 85-1
Li ght Blue* 3.90 33-1 2.75 47-1 1.80 71-1
Brown 4.55 28-1 3.00 43-1 2.00 64-1
Red 5. 80 22-1 3.60 36-1 2.30 56-1
White 7.00 18-1 4.45 29-1 2.70 47-1
Green 7.90 16-1 5.00 26-1 3.00 43-1
Blue 9.80 13-1 5.75 22-1 3.30 39-1
Yellow 14.80 9-1 7.35 17-1 3.55 36-1
Black 20.15 6-1 8.50 15-1 3.70 35-1
Purple 27.80 5-1 9.80 13-1 3.80 34-1
Gray 31.60 4-1 10.50 12-1 3.90 33-1
No Tip 35.70 3.6-1 11.80 11-1 4.50 28-1
Oz/Gal Ratio Oz/Gal Ratio Oz/Gal Ratio
1 cps 75 cps 200 cps
Note: * Metering tip color was formerly clear. All induction rates are base on a water pressure of 40 psi.
Leaner dilutions can be achieved by o rdering DEMA ultra lean tip kit 100-15KU.
E. DRIP TRAY:
The Drip Tray is installed by simply sliding the tray flange under the tabs on the bottom of the case. Lower the tray allowing tray
dimples to fall into the receptor holes.
Injection Rates For Viscosities Shown
3) OPERATION
The Blend S afe is now r eady for use. D epressing a push button opens the valve allowing water to flow through the chemical
proportioner that mixes a chemical water solution at the desired rate. The buttons are spring loaded to prevent accidental overflow if
unattended, but may be converted to locking buttons by cutting off the tab at the notch (See Figure 2). Pushing the but to n a nd turn in g i t a
1/4 turn clockwise at the end of its travel allows the valve to lock on. This makes it unnecessary f or the attendant to hold the button in
while filling large containers. Turning the button in a counter clockwise direction will release it, allowing the valve to shut off .
4) SERVICING
Caution: Turn off water supply before servicing.
A. Proportioner fails to draw chemical:
Insufficient water supply pressure. 20 PSI is the minimum allowable pressure.
B. Proportioner stops drawing chemical:
1) Inspect foot valve for dried chemical or dirt. Soak in hot water to cle an.
2) Propor tioner metering tip clogged with dried chemical. Remove tip and try injecting in hot water. If there is no suction,
remover proportioner and soak in hot water to clear interior passages.
C. Valve Malfunction:
Check that the button moves freely in & out and that a "click" can be heard when the button is pushed and released, indicating
that the magnet is a ctivating the p lunger p rop erly. Remove cover. To i nsp ect inter nal par ts, uns crew magnet hous ing and
carefully pull off the enclosing tube so as not to dr op the plunger , kick-off spring, and sp acer. Check for dirt or damage
impending plunger and kick-off spring movement. Inspect the diaphragm, making sure the two small pin holes (bleed hole) in
the diaphragm convolution are clear to allow the valve to close.
Caution: When servic ing unit, be sure that repl acement parts have been installed according to drawing.
RETURNS: NO MERCHANDISE MAY BE RETURNED FOR CREDIT WITHOUT DEMA’S WRITTEN
I-611 Pg. 2 of 6
Rev. C-36327 11/18/ 10
Page 3
DEMA 661AG-4 BLEND SAFE
INSTALLATION INSTRUCTIONS
PERMISSION. RETURN MERCHANDISE AUTHORI ZATION NUMBER RE QUIRED IN ADVANCE
OF RETURN.
WARRANTY: DEMA products are warranted against defective material and workmanship under normal use and service for one
year from the date of manufacture. This limited warranty does not apply to any products which have a normal life
shorter than one year or failure and damage ca use d by chemicals, corr osi on, impr op er voltage s up p ly, physical
abuse, or misapplication. Rubber and synthetic rubber parts such as “o”- rings, diaphragms, squeeze tubing and
gaskets ar e cons idered exp endab le and ar e not cover ed under war ranty. This war ranty is extended only to the
original b uyer of DEMA products. If products a re altered or repair ed without prior ap proval of DEMA, this
warranty will be void.
Defective units or parts should be returned to the factory with transportation prepaid. If inspection shows them to
be defective, they will be repaired or r eplaced without charge, F.O.B. factory. DEMA assumes no liability for
damages. Return merchandise authorization number, to return units for repair or replacement, must be granted in
advance of return.
PRESSURE INDICATING TEE INSTALLATION
OUTLET TU B ING
PRESSURE
INDICATING
TEE
CHEMICAL
INLET TUB ING
BLEND C EN TER
WATER INLE T HO S E
WATER INLET HOSE
DETAIL OF PRESSURE
INDICATING TEE
FIGURE 3
I-611 Pg. 3 of 6
Rev. C-36327 11/18/ 10
Page 4
DEMA 661AG-4 BLEND SAFE
INSTALLATION INSTRUCTIONS
INLET HOSE
ADAPTER
STRAINER
WASHER
22 15/16
REF
BUTTON
ACTUATOR
PROPORTIONER
OUTLET TUBING
25 3/16
METERING TIP
FIGURE 1
MOUNTING
HOLES
CHEMICAL SUPPLY TUBE,
FOOT VALVE & CERAMIC
WEIGHT
CABNET LOCK
UTILITY KNIFE
CHEMICAL CONTAINER
DRIP TRAY
PUSH BUTTON
FIGURE 2
7 3/4
REF
I-611 Pg. 4 of 6
Rev. C-36327 11/18/ 10
(SIDE VIEW)
Page 5
DEMA 661AG-4 BLEND SAFE
DESCRIPTION
DESCRIPTION
ACCESSORIES
INSTALLATION INSTRUCTIONS
REFER TO
PAGE 7
FOR PARTS
BREAKDOWN
66-153
1 GPM
61-32BAG-1
(1/4" BARB)
61-32AG-1
(3/8" BARB)
(OPTIONAL)
4 GPM
61-22BAG-4
(1/4" BARB)
61-22AG-4
(3/8" BARB)
100-15K
63-82
(1 GPM ONLY)
66-72
(1 GPM ONLY)
66-26-2
66-27
66-28
61-107-2
100-11P
93-19
100-38
66-23-2
66-21
66-139
(SPECIFY COLOR)
(SPECIFY COLOR)
66-32
63-39
66-140
63-35
63-36
41-7-25
63-37
41-1-8
63-38
41-15-10
68-6-QD2
PART NO.
41-1-8
41-7-25
41-15-10
61-22BAG-4
61-32BAG-1
61-107-2
63-35
63-36
63-37
63-38
63-82
66-21
66-23-2
66-26-2
66-27
KICK-OFF SPRING
ENCLOSING TUBE
DIAPHRAGM
4 GPM PROPORTIONER-1/4" BARB
1 GPM PROPORTIONER-1/4" BARB
CERAMIC WEIGHT
MAGNET
SPRING
SPACER
PLUNGER
VALVE BODY63-39
VINYL TUBE (3/16" ID X 7" LG) 1 GPM ONLY
CABINET LOCK
DRIP TRAY
PIPE NIPPLE (3/8" NPT X 2" LG)
BUSHING
PART NO.
66-28
66-32
66-72
66-139
66-140
66-153
93-19
100-11P
100-38
61-22AG-4
61-32AG-1
68-6-QD2
100-15K METERING TIP KIT (13 SIZES)
VINYL TUBING
PLUG
9/16 I.D TUBE X 6" LG. 1 GPM ONLY
MAGNET HOUSING (SPECIFY COLOR)
PUSH BUTTON (SPECIFY COLOR)
PIPE PLUG
SWIVEL ADAPTOR
FOOT VALVE
STRAINER WASHER
4 GPM PROPORTIONER-3/8" BARB
1 GPM PROPORTIONER-3/8" BARB
PRESSURE INDICATING TEE
I-611 Pg. 5 of 6
Rev. C-36327 11/18/ 10
Page 6
DEMA 661AG-4 BLEND SAFE
INSTALLATION INSTRUCTIONS
DEMA AIR GAP PROPORTIONER
MODEL 164AG
MODEL 163AG
(1 GPM) (4-GPM)
63-78
100-59
63-74-2
63-77
63-72
61-32BAG-1
61-32AG-1
63-79
(1/4" BARB)
63-80
(3/8" BARB)
100-15
(1/4" BARB)
61-9
(3/8" BARB)
100-12
(1/4" TUBE)
100-12L
(3/8" TUBE)
CERAMIC WEIGHT
FOR 1/4" TUBE
61-107-2
FOR 3/8" TUBE
61-107
61-22AG-4
61-22BAG-4
100-59
63-73
63-76
63-71
PART NO.
61-107-2
63-71
63-72
63-73
63-74-2
61-22AG-4
61-22BAG-4
61-32AG-1
61-32BAG-1
63-76
63-88
(4" LONG)
63-82
DESCRIPTION DESCRIPTION
CERAMIC WEIGHT (FOR 3/8" TUBE)61-107
CERAMIC WEIGHT (FOR 1/4" TUBE)
PROPORTIONER BODY (4 GPM)
PROPORTIONER BODY (1 GPM)
NOZZLE (4 GPM)
NOZZLE (1 GPM)
4 GPM (3/8" BARB) PROPORTIONER
4 GPM (1/4" BARB) PROPORTIONER
1 GPM (3/8" BARB) PROPORTIONER
1 GPM (1/4" BARB) PROPORTIONER
SCREEN (4 GPM)
ACCESSORIES
61-9K
100-15K
100-11P
PART NO.
63-77
63-78
63-79
63-80
63-82 VINYL TUBE (3/16 ID X 7" LG)
63-83
63-88
100-12L
METERING TIP KIT-15 SIZES (3/8" BARB)
METERING TIP KIT-14 SIZES (1/4" BARB)
SCREEN (1 GPM)
O-RING
INLET BARB (1/4" BARB)
INLET BARB (3/8" BARB)
VINYL TUBE (9/16 ID X 6' LG)
VINYL TUBE (9/16 ID X 4" LG)
FOOT VALVE100-11P
VINYL TUBE (1/4 I.D. X 8' LG.)100-12
VINYL TUBE (3/8" I.D. X 8' LG.)
STRAINER WASHER100-59
63-83
I-611 Pg. 6 of 6
Rev. C-36327 11/18/ 10
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