Powers 1430 User Manual

The Hydroguard thermostatically blends hot and cold water to deliver mixed water at the
desired temperature, quickly compensating for temperature variations due to changes in
inlet temperature, pressure or flow, and reduces flow upon water supply failure.
The 1430’s delivery temperature will hold to within ±5°F (± 2.7°C) when tested in accor­dance to ASSE 1017.

Operating

Maximum Pressure Differential . . . . . . . . . . . . . . . 100 psi (689 kPa)

Maximum Static Pressure . . . . . . . . . . . . . . . 125 psig (861.25 kPa)

Maximum Hot Water Temperature . . . . . . . . . . . . . . . . 200°F (93°C)

Minimum Hot Water Temperature . . . . 15°F (8°C) Above Set-Point

Minimum Flow: 1432 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.5 gpm **

1434 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.0 gpm **

Temperature Adjustment Range*. . . . . . . 40°F (4°C) - 160°F (71°C)

Listing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ASSE 1017

Certified . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .CSA B125

Note: *Low limit cannot be less than the cold water temperature. For best
operation, hot water should be at least 15

°F (8°C) above desired set point.

**Minimum flow at which valve will control to ASSE 1017 requirements.

TECHNICAL INSTRUCTIONS

1432/1434 Hydroguard®Hi/Lo

Master Mixing Valves

DESCRIPTION

SIZING

SPECIFICATIONS

WARNING: TO INSURE THE ACCURATE AND RELIABLE OPERATION OF THIS
PRODUCT, IT IS ESSENTIAL TO:

• Properly size each valve based on the individual application.

• Properly design the recirculation system to minimize pressure and temperature varia­tions.

• Conduct an annual maintenance program to insure proper operation of all critical
components.

FAILURE TO COMPLY WITH PROPER INSTALLATION INSTRUCTIONS COULD
CONTRIBUTE TO VALVE FAILURE, RESULTING IN INJURY OR DEATH.

Table A, Capacity Table, presents the Hydroguard discharge capacity in gpm and I/m for various pressure drops across the valves
(the difference between the lowest inlet pressure and the discharge pressure at the Hydroguard).

1432 Hydroguard Valve

Typical Flow

Hot and cold water supplies enter Hydroguard at indicated ports, (see Figure 1) then
flow past their respective balanced poppet plug and seats. Next, hot and cold water
flow is directed to the mixing chamber where the thermostatic motor is located.

Temperature Change

With a rise in discharge temperature due to pressure or temperature fluctuation on
the inlet, the actuator expands, decreasing flow of hot water. The reverse occurs
with a drop in discharge temperature.

Responses

Temperature adjustment screw moves the actuator/poppet to the desired discharge
temperature.

• Cold water supply failure – causes actuator to expand reducing the flow of hot
water.

• Hot water supply pressure failure – causes actuator to contract reducing the flow
of cold water.

Funnel expands or contracts depending on flow rate ensuring maximum heat
transmission to actuator.

OPERATION

ate

o

t

Ho

W

ate

P

o

E

b

le

R

A

T

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Figure 1

Table A Flow Capacity in US gpm at 50-50 Mixed Ratio
Model Min. Min. Flow Pressure Drop Across Valves in psi

Flow Rate* to ASSE 1017 5 10 20 30 45 60 75 100

1432 0.5 gpm 1.5 gpm 13.5 18.0 27.0 32.0 40.0 47.0 52.0 60.0
1434 0.5 gpm 5.0 gpm 32.0 45.0 66.0 80.0 100.0 117.0 132.0 152.0

* Minimum flow when Hydroguard is installed at or near hot water source with recirculated tempered water with continuously operating recirculating pump.

Table B Flow Capacity in lpm at 50-50 Mixed Ratio
Model Min. Min. Flow Pressure Drop Across Valves in kPa

Flow Rate* to ASSE 1017 34 69 138 207 310 414 517 690

1432 1.89 lpm 5.68 lpm 51 68 102 121 151 178 197 227
1434 1.89 lpm 18.92 lpm 121 170 250 302 378 442 500 575

* Minimum flow when Hydroguard is installed at or near hot water source with recirculated tempered water with continuously operating recirculating pump.

TI 1430 HiLo

Adjusting

Thermostatic

Hot

Cold

Cold

cre

ctuator

xpanda

estrictor

t

r

ppet

r

ppe

ture

TI 1430 HiLo Page 2

CHECKSTOP

CHECKSTOP

7

5

6

2

1

10

8

17

11

12

18

9

23

24

25

26

27

28

29

30

13

19

21

20

16

15

14

22

3

4

PARTS LIST

NO. NAME 1432 BRONZE 1432 POLISHED CHROME 1434 BRONZE 1434 POLISHED CHROME

1 Body Cap 390-334 390-335 390-336 390-336
2 “O” Ring 084-020 084-020 047-132 047-132
3 Return Spring 390-068 Kit 390-068 Kit 390-070 Kit 390-070 Kit
4 Nut 390-068 Kit 390-068 Kit 390-070 Kit 390-070 Kit
5 Cold Water Poppet 390-068 Kit 390-068 Kit 390-070 Kit 390-070 Kit
6 Cold Water Stem 390-068 Kit 390-068 Kit 390-070 Kit 390-070 Kit
7 Motor Failure Spring 390-068 Kit 390-068 Kit 390-070 Kit 390-070 Kit
8 Lower Body n/a n/a n/a n/a

9 “O” Ring 047-036 047-036 047-047 047-047
10 Hot Water Poppet 390-068 Kit 390-068 Kit 390-070 Kit 390-070 Kit
11 Motor Adapter 390-024 390-024 390-521 390-521
12 Thermal Motor 390-500 Kit 390-500 Kit 390-543 Kit 390-543 Kit
13 Dial Thermometer 894-3709 894-3709 894-3709 894-3709
14 Motor Housing n/a n/a n/a n/a
15 Motor Housing Gasket 390-051 390-051 390-095 390-095
16 Motor Housing Cap n/a n/a n/a n/a
17 “O” Ring 047-020 047-020 084-014 084-014
18 Funnel Cage n/a n/a n/a n/a
19 Set Screw 390-026 390-026 390-026 390-026
20 Screw (4) 390-027 390-027 390-526 390-526
21 Temp. Adjustment Screw 390-028 390-028 390-527 390-527
22 Bolts 390-028 390-028 390-527 390-527
23 Expandable Restrictor 390-500 Kit 390-500 Kit 390-543 Kit 390-543 Kit
24 Retainer n/a n/a n/a n/a
25 Screws (4) 390-064 390-064 390-526 390-526
26 Overload Assy. n/a n/a n/a n/a
27 Pipe/Nipple 390-031 390-058 390-531 390-535
28 Cross 390-033 390-060 390-528 390-532
29 Hex Plug 390-053 390-061 390-530 390-534
30 Hex Bushing 390-056 390-062 390-529 390-533

* Replace both hot and cold water poppets together. Kit contains matched pair to give proper travel.

NO. NAME FINISH 1432 1434

31 Bonnet* Rough Bronze 230-267 230-287

Polished Chrome 230-268 230-288
32 “O” Ring n/a 047-029 047-130
33 Gasket n/a 230-083 230-083
34 Screen n/a 230-116 230-104
35 “O” Ring n/a 047-009 047-009
36 Stem Rough Bronze 230-269 230-289

Polished Chrome 230-270 230-290
37 Spring n/a 230-127 230-103
38 Poppet Assembly n/a 230-271 230-293

NO. NAME FINISH 1432 1434

39 Body Rough Bronze n/a n/a

Polished Chrome n/a n/a

40 Nut Rough Bronze 230-117 230-096

Polished Chrome 230-118** 230-097**

41 Tail Piece Rough Bronze 230-119 230-094

Polished Chrome 230-120** 2300-095**

** Available as complete body, nut and tail piece assembly only.

CHECKSTOP SECTION

TI 1430 HiLo Page 3

PART DESCRIPTION REPAIR KIT INCLUDES: 1432 1434

(Numbers below correspond with numbers in Figure 2)
HiLo Motor Replacement Kit 1, 2 and 13 Gaskets, and “O” Rings 390-500 390-543
Strainer Replacement 7, 8, 9, and 10 230-134 230-136
Checkstop Replacement 7, 8, 10, 11, and 12 230-135 230-137
Gasket and Disc Replacement 1, 2A, 4, 6, 7, 8, 10, and 12 390-298 390-306
Mixing Valve Replacement 3, 4, 5, and 6 390-068 390-070

Strainer and Checkstop Repair Kits contain parts for one (1) pair. Repair kits include parts for both old-and new- style checkstop (Items 7, 8, 10, 12) and body Cap Gasket (Item 6). Use appropriate part for your style Hydroguard. If replacing either
bonnet or stem on old-style checks, you must replace both with new parts. Do not use the new bonnet with an old stem or vice versa. Repair Kits containing “O” Rings include silicone gel for use on “O” Rings during installation.

7

8

9

10

11

12

13

2

1

4

3

5

6

"O" RING

GASKET

SCREEN

"O" RING

SPRING

POPPET ASSEMBLY

EXPANDABLE
RESTRICTOR

THERMAL
ACTUATOR

MOTOR
ADAPTER

HOT WATER
POPPET

"O" RING

COLD WATER
POPPET

"O" RING

REPAIR KITS (Repair Kit Parts)

What to look for if:

• The flow of water is less than desired...

a. Stop valves or supply to Hydroguard not fully open.
b. Clogged checkstop strainer screens.
c. Accumulation of lime deposits around valve seats.
d. Low supply pressures or unusual supply temperatures.

• The flow of water is completely shut off...

a. Stop valves or supply valves are completely closed.
b. Valves downstream from Hydroguard fully closed.

c. Loss of either hot or cold water supply pressure.

• Discharge temperature varies...

a. Very large restriction in outlet flow.
b. Very large drop in inlet pressure.
c. Very large fluctuation of hot water supply temperature.
d. Worn valve seats.
e. Minimum flow requirement not achieved.
f. Lime deposits around motor, poppets and/or seat.

MAINTENANCE AND TROUBLESHOOTING

1. IMPORTANT: Flush all piping thoroughly before installing.

2. Valves are to be installed as close to building inlet supply
as possible to prevent/minimize pressure fluctuations.

3. Remove body screws to turn outlet to any of four positions.
The Hydroguard body can be rotated to any position due
to the union inlets. Note: Make certain the body screws

and unions are tightened securely to prevent leakage.

4. CAUTION: When the Hydroguard supplies tempered water
to self-closing and/or solenoid valves, provide a shock
absorber (Powers Part No. 460-353) on the discharge line.
This protects the Hydroguard thermostatic motor from
damage by water shock waves generated by the quick
closing valves.

5. Before use, check maximum discharge temperature.

Reset if necessary.

OPERATION CHECK:

After Hydroguard is installed, make certain the supply stop
valves and strainers are free and clean and ready for operation
by disassembling checkstops as shown in "Servicing", steps
1, 2, and 3.

INSTALLATION INSTRUCTIONS

Figure 2

TI 1430 HiLo Page 4

Close both inlet checkstop
valves by turning stop valve
stem clockwise with 1/4"
(6.4mm) allen key.

Remove bonnet with 2-1/4"
(57mm) wrench for 3/4" NPT
checks and 3" (76mm) for 1-1/4"
NPT checks or use a 3/4" socket
wrench.

Lift out strainer screen (reassem­ble in reverse order).

SERVICING

VALVE DISASSEMBLY

Remove thermal element hous­ing cap screws and lift thermal
element by lifting up tempera­ture adjustment knob.

Remove funnel assembly. Lift
out the overload assembly and
hot water poppet.

Remove body cap with wrench
to service cold water poppet
assembly.

Note: Before disassembling, make certain both water supplies to the Hydroguard are shut off.
CHECKSTOP DISASSEMBLY

Temperature Adjustment and Lock

NOTE:

AFTER COMPLETING REPAIRS, CHECK MAXIMUM DIS-

CHARGE TEMPERATURE RESET IF NECESSARY.

W

ARNING: FAILURE TO PERFORM THIS OPERATION COULD

RESULT IN UNSAFE DISCHARGE TEMPERATURE, WHICH MAY
CAUSE INJURY OR DEATH.

TI 1430 HiLo 0632 EDP# 6508895

© 2006 Powers

USA: Phone: [phone] • Fax [phone] • www.powerscontrols.com

Canada: Phone: [phone] • Fax [phone] • www.powerscontrols.ca

ADJUSTMENTS

Maximum temperature setting for 1430 Series Valves:

1. Turn off re-circulation pump (if one is in the system).

2. Open up enough fixtures to meet minimum flow requirement of:
1432 = 1.5 gpm
1434 = 5 gpm

3. Loosen set screw on side of knob.

4. Turn maximum temperature screw counter-clockwise to full hot position.

5. Then start adjusting the screw clockwise to desired temperature.

Counter-clockwise adjustment: Mixes more hot water
Clockwise adjustment: Mixes more cold water

Note: Please allow valve temperature to settle in before making your next
adjustment.

6. When desired temperature is set, tighten set screw on side of knob.

Turn re-circulation pump back on. Close open fixtures.