h.e. anderson co. - pilot valve and manifold …pilot valves & manifolds pv-10 12/99 5 h.e....

Pilot Valve and Manifold Manual forRatio:Feeder® Chemical metering pumps.

Overview. Pilot Valve.The Pilot Valve is a remote control largecapacity three way valve. This valve is pilotoperated, that is, pressure from the inlet portis used to switch the valve. In some designs,an external pressure signal is used to switchthe valve. This can be either gas or fluidpressure.

The Pilot Valve is used to control themodular pumpers that inject the chemicaladditive into the water line. The pumpers aresingle acting hydraulic (or pneumatic)cylinders. The pressure to power thesecylinders is drawn from the water line, anexternal source such as an air compressor, or acompressed gas storage cylinder. After thepressure is used to inject the chemical, it mustbe exhausted to a drain or container at zeropressure. Because the pumpers operate veryfast at times and because more than onepumper can be used for various reasons, thepilot valve must switch rapidly and have arelatively large flow capacity. The pumpersare single acting so the pilot valve must be athree way type. A three way valve has threeports or connections. A pressure port (inlet),an exhaust port (outlet), and a common(cylinder or pumper) port. The action of thevalve alternately connects the inlet to thecommon or the outlet to the common. Whenthe ‘inlet’ is connected to the ‘common’, the

pumper ‘pumps’ or injects a measured dose ofchemical into the water line. When the valveswitches and connects the ‘outlet’ to the‘common’, a suction cycle occurs. The fluid orgas used to power the pumping cycle isexhausted or wasted and a new measureddose of chemical is drawn into the pumper tobe ready for the next full cycle.

There are two types of pilot valves, twodesigns, three brands, and three sizes. Thefirst type is non-electric, external signalswitching. The second type is electric solenoidoperated, internal pressure signal switching.The first design uses a diaphragm operator.The second uses a piston operator. The threebrands are; Anderson (type A),Honeywell(type S), and Bürkert (type B). The three sizesare (as determined by the thread size of theinput pressure connection); 3/8" NPT, 1/2"NPT, and 3/4" NPT. The model number ofthe Ratio:Feeder® does not identify thevalve. You should identify the valve and makea note in your owners manual for use whenordering parts or requesting help withtroubleshooting.

The main connections to the three wayvalves are as follows.

Standard port designations: Inlet; ‘P’ or ‘1’.Common; ‘A/B’ or ‘2’. Outlet; ‘R’ or ‘3’ or ‘E’.

Identifying the valve brand.The Anderson brand housing is a cube. It hasa small threaded connection for a pressuregauge in addition to the main connections.

The Honeywell brand has a forged body andthe inlet and outlet connections are side by

side opposite from the common port. Thesolenoid housing if used, is generally round.

The Bürkert brand has the three mainconnections on three different faces of thehousing. The solenoid if used, is rectangular.

PV-10 12/99 1 H.E. Anderson Co.

All brands can be either solenoid or externalpressure controlled.

The pilot valve requires a minimum pressureto operate properly. The minimum operatingpressure for the Ratio:Feeder® is 15 psig. Thisis greater than that required for the pilot

valve so we will refer to the minimumpressure requirement as 15 psig for the wholesystem.

Please turn to the section covering the valveyou have. The Manifold section follows thepilot valve section.

Type A (Anderson) Valves.Diaphragm operator, poppet seal, externalpressure or solenoid operated.

Solenoid operated valves com with coilcoltages of 12 VDC & 24 VAC.

Two sizes; ¾" manifold multiple pumper and½" single pumper.

Normal operation, fast ‘crisp’ switching. Asmall very short discharge is typical whenswitching to the ‘on’ or inlet connected to thecommon port state. A larger more distinctdischarge is noted when switching to the ‘off’state. The volume of the waste will beproportional to the size and number ofpumpers attached to the valve. The wastecycles frequency is determined by the waterflow rate in the main line. The valve shouldnever waste continuously.

Detail procedures

Diaphragm replacement. Remove pressurefrom valve. Remove the diaphragm cover part18309 or 18310. Remove opposite cover part18298. Un-stick diaphragm from valve body.Using suitable tools, remove the nuts (P/N18498) from each end of the poppet shaft P/N18343. DO NOT HOLD DIAPHRAGMwhile removing or tightening nuts. Removeand inspect poppets and diaphragm. Replaceif necessary. Install diaphragm first byassembling all parts onto poppet shaftdiaphragm end. Tighten nut by holding shaftwith locking pliers or placing in vise.Diaphragm is a three piece assembly. Theblack ‘rubber’ part with three holes installsaway from the nut. As nut is tightened, the

parts may rotate with respect to one another.Observe how far the parts rotate by observingthe small hole near the edge of the blackdiaphragms. Now loosen the nut andpre-position the parts the other way. Tightenthe nut and the small holes should be inalignment just as the nut becomes tight. Nowplace this assembly into the valve body andassemble the remaining parts onto the otherend of the poppet shaft. Tighten the nut byholding the opposite nut with a suitable tool(socket). Now position the diaphragm so thatthe small hole near the edge is in alignmentwith the hole in the valve body. Replace thecover assembly to seal and hold thediaphragms in the proper position. Replacethe opposite end cover. Place the completevalve back in service and test.

Pilot Valves & Manifolds

H.E. Anderson Co. 2 PV-10 12/99

Figure 1. Anderson ¾” Pilot Valve with

pressure gauge and one multi-adapter for

mounting a pumper.



Table 1Troubleshooting the Type A (Anderson) Pilot Valve

Condition Probable Cause Remedy

Valve doesnot switch

1. No signal. 1. Not a fault of valve. Fix signal.

2. Insufficientpressure.

2. Minimum pressure required for system is 15psig. Also if using pressure from an externalsource to switch the valve, the pressureshould be equal to or preferably greaterthan the pressure in the water line.

3. Dirt in valve orpilot circuit.

3. Sluggish or slow operation can be caused bydirt in the pilot circuit. If solenoid is used,remove the small tube from the end of thesolenoid to the valve body. Blowcompressed air into the small tube. Removethe solenoid. Remove the center parts fromthe coil by pushing on the tube barb. Cleanall parts. Both stainless pieces remove fromthe plastic carrier. Clean orifices. Replaceall parts.

4. Broken diaphragmoperator.

4. Valve follows signal. Be sure signal iscorrect.

Excessive orcontinuouswaste

5. Insufficientpressure.

5. Minimum system pressure is 15 psig.

6. Broken diaphragm. 6. Replace diaphragm, see detail repairprocedures.

7. Damaged poppetand/or seat.

7. Remove diaphragm and poppet shaft.Inspect poppets and seat area in valve body.If seat is damaged valve cannot be repairedin the field. Contact factory.

“Groaning” orchattering

8. Valve switching toorapidly.

8. Broken diaphragm. Replace, see detailprocedures. Ocassionally, low pressure ordirt in the pilot circuit can cause thesesymptoms. See remedy three above.



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Type S (Honeywell)Diaphragm operator, poppet seal, externalpressure and electric solenoid operated.

Coil Voltages; 12 VDC, 24, 120, 240 VAC.

Three sizes; 3/8", 1/2", and 3/4"

Rapid operation switching, no sliding seals.Long life and no scheduled maintenance.

Normal operation is indicated by ‘crisp’switching, normally silent, and with a smallshort waste discharge when switching to the‘on’ or ‘inlet’ connected to the ‘common’state. If solenoid operated, the solenoid will beenergized to produce the ‘on’ state. The offstate, ‘outlet’ connected to the ‘common’, willbe noticed by a larger discharge of pressure(water or air). The volume of waste dischargewill be proportional to the size and number ofattached pumpers. There should never be acontinuous waste.

Replacing the Diaphragm.

Remove large and small covers. Separatediaphragm from valve body. Remove nut fromcenter of diaphragm, hold opposite nut, notdiaphragm when removing. Install newdiaphragm assembly so black diaphragm withthree holes is in furthest into body. Tightennut to hold diaphragm onto poppet shaft sothat small holes near outer edge of blackdiaphragms are aligned. DO NOT HOLDDIAPHRAGMS WHILE TIGHTENINGNUTS. DONOT ENGAGE THE SMALLTUBE INTO THE DIAPHRAGMS TO

KEEP THEM IN ALIGNMENT. Tightennut, see how far diaphragms moved. Loosennut, pre-position diaphragms the other way sothat as nut is tightened, the diaphragms willbe in their correct position as the nut becomestight. Insert diaphragm poppet shaft ass’y intobody. DO NOT ENGAGE TUBE INTOSMALL HOLES YET! Now installother side poppet and nut. After both nuts aretight, engage the diaphragms onto the smalltube near the edge. Do not place thediaphragms into any torque stress. Nowreplace the covers. It helps if the screwthreads are coated with an anti-siezelubricant.

Parts identification drawings (6) insert here.



Figure 2. Two pumper manifold using

Honeywell type S pilot valve.



Table 2Troubleshooting the Type S (Honeywell) Pilot Valve



1. No signal eitherexternal pressure orsolenoid action.

1. Verify proper signal is sent. No signal is nota fault of valve.Solenoid can be clogged by dirt.

2. Valve clogged bydirt or trash.

2. Remove large cover. Push diaphragmcenter in about 3/16". It should spring backeasily. If not, Remove small cover oppositeside and clean area. Be sure spring is notbroken.

3 .Diaphragmoperator broken.

3. Replace diaphragm.See Section X.X

Excessivewaste

4. Diaphragm broken. 4. Replace diaphragm, see 3 above

5. Poppet seatdamaged. (smallcontinuous waste)

5. Remove poppet/diaphragm ass’y (3 above).Inspect poppets and their seat area in thevalve body. Damaged bodies cannot berepaired in the field. Contact factory.

6 .Insufficientpressure.

6. Increase pressure.

“Groaning” orchattering

7. Insufficient pressuredifferential

7. On S series Ratio:Feeder®s as unit ages, atsmall flows there is not enough pressure lossacross unit. Increase water flow. RebuildR:F motor section.

8. Broken diaphragm 8 .Replace diaphragm, see 3 above.

9. Clogged or dirtypilot passageways.

9. Remove large cover.Remove external signal connection. Ifsolenoid controlled, the tube from the topof the solenoid to the valve body is thesignal line. Blow compressed air from thesmall tube near the edge of the diaphragmsto the signal connection port. This shouldclear the trash. If not, remove thealuminum cover which screws onto thebody. Clear any trash under this cover.



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Type

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Type B (Bürkert) Valves.Piston operator, external signal and electricsolenoid switched, adjustable orifice, manualoperation button. Two sizes; 1/2" and 3/4".

Coil voltages: 12 VDC; 12, 24, 120, and 240VAC.

Normal operation is a ‘crisp’ switching to the‘on’ state (inlet connected to the common). Aslight amount of water or air will be exhaustedduring the transition from ‘off’ to ‘on’. If wateris used, the amount of waste will be about 50ml for the 1/2" valve and 75ml for the 3/4"valve. There should never be a continuouswaste discharge. The normal discharge on thewaste cycle will be proportional to the sizeand number of attached pumpers.

Troubleshooting.Repair procedures. To remove solenoidarmature remove solenoid and turn upsidedown. Remove actuator seal and backupplate. Note small spring pushing againstarmature lever. Place cloth over lever to catchspring and move lever slightly towards springand pull up and out of coil. Find spring incloth and save. Clean coil and manualoperator button with suitable solvent,WD40® can be used if wiped out aftercleaning. Insert tool you have fashioned from

sheet metal or use a metal nail file the sameapproximate width as lever down into the coiland compress the button spring towards themanual operator button. Now insert the leverbetween the nail file and the coil housing andslide it into position. As it moves intoposition, it will compress the spring out of theway. Now remove the nail file and replace thespring near the exposed end of the lever.

Check for proper operation of the lever,depress the manual button and lever shouldmove. Replace the plate and actuator seal andreassemble the coil to the valve.

Figure 3. Two pumper manifold using

Bürkert type B pilot valve.



Table 3Troubleshooting the Type B (Bürkert) Pilot Valve



1. No pressure signal 1. Not a fault of valve. Fix signal.

2. No pressure in line. 2. Pilot operated valves do not work unlessmain line is pressurized.

3. Manual operatordoes not produceany action.

3. Check armature in solenoid or externaloperator pivot arm P/N 05067. If lever isbroken, replace. On solenoid types, entiresolenoid must be replaced. Orifices may beout of adjustment. “P” side startingadjustment is 2 turns in from flush. “R” sideis 1 1/4 turns in from flush. Dirt or trashmay be preventing piston operator frommoving. Remove solenoid or valveoperator. Clean area in and around pistonby flushing with water. Move piston andflush again. Re-assemble and test. If valvestill does not work, disassemble valve andrepair or replace piston ring and seals andsleeve.

Valve leaks

4. Excessive wastefrom exhaust.

4.Valve not switching completely. Clean as in3 above. Be sure you have 15 psig minimumpressure. Damaged orifice seat. Cannot berepaired in the field.

5. Small continuousleak.

5.Damaged orifice seat. Disassemble andinspect. Cannot be repaired in the field.

6. Leak from or nearsolenoid.

6.Actuator seal damaged. Replace.

Valve buzzesor solenoidgets hot.

7. Solenoid armaturedirty.

7. Remove solenoid and armature see repairprocedures and clean.

8. Electric signalfaulty.

8. Repair controller output. Usually outputtriac has failed.

9. Insufficient power.. 9. Check controller, replace triacs.

SMB-2Ec 4/00 H.E. Anderson Co.

05124 PISTON SLEEVE 1/2

05131 PISTON 1/2

05190 POPPET SEAL 1/2

05207 POPPET RETAINER 1/2


05215 POPPET CAP 1/2

05223 WASHER A5.3

05231 LOCK WASHER A5.3

05249 NUT M5X0.5

05116 VALVE BODY 1/2

05471 TERMINAL

ASSEMBLY

17598 SCREW M4X74

05455 SCREW M4X55

05943 BV GASKET BACKUP PLATE

05257 ACTUATOR SEAL

05265 ACTUATOR BLOCK

05314 O-RING

05322 O-RING

05281 ACTUATOR PLATE

05299 ACTUATOR GASKET

05954 BV ORIFICE

BLOCK ASSY

05330 ACTUATOR

ORIFICE

05322 O-RING

05314 O-RING

05273 O-RING

05446 TERMINAL

BLOCK SEAL

ORIFICE ADJUSTING PROCEDURE

Refer to Part number 05954 BBLOCK ASSY and the

0265 ACTUATOR BLOCK. On the ‘R’ side the

05330 ACTUATOR ORIFICE screws in 1¼ turns

from flush. The ‘P’ side adjusts 2 turns in from level

or flush with the block.

05439 CONDUIT

ADAPTOR

(NOT INCLUDED WITH

05471 ASSEMBLY)

05348 COIL OPERATOR ASSY 24VAC

05489 COIL OPERATOR ASSY 12VDC

05306 SEAL KIT 1/2

Contains:

1 ea. 05025* 1 ea. 05158

1 ea. 05166 1 ea. 05174

2 ea. 05190 1 ea. 05257

3 ea. 05273 1 ea 05299

* Not used with electric valve

MANIFOLD VALVE PARTS

For ½" Type B Valve

24 VAC, P/N 06510

12 VDC, P/N 06502

SMB-2Wc 1/02 H.E. Anderson Co.

05124 PISTON SLEEVE 1/2

05131 PISTON 1/2


05207 POPPET RETAINER 1/2




05223 WASHER A5.3

05231 LOCKWASHER A5.3

05249 NUT M5X0.5

18798 ACTUATOR

BODY

05108 DOW PIN

18787 ACTUATOR

PIVOT ARM

05257 ACTUATOR

SEAL

05330 ACTUATOR

ORIFICE

05322 O-RING

05314 O-RING

05265 ACTUATOR

BLOCK

05273 O-RING

05281 ACTUATOR

PLATE

05299 ACTUATOR

GASKET

05083 SCREW M4X70

05091 SCREW M4X45

03781 SPRING

05041 ACTUATOR

CAP

05075 SCREW 8-32X7/8

09721 1/4X1/8 ELBOW

05314 O-RING

05322 O-RING

05330 ACTUATOR ORIFICE

05025 ACTUATOR

DIAPHRAGM

17210 HOLE PLUG ¾“ CLEAR

07246

BRASS

INSERT

17254 BV OPERATOR ASSY W/ORIFICE BLK

04367 NUT 1/4

03947 PLASTIC SLEEVE

18776 ACTUATOR SLIDE

PRESSURE ACTUATED


For ½" Type B Valve

P/N 06536

05306 SEAL KIT 1/2

Contains:

1 ea. 05025 1 ea. 05158

1 ea. 05166 1 ea. 05174

2 ea. 05190 1 ea. 05257

3 ea. 05273 1 ea. 05299

05124 PISTON SLEEVE ½

05662 PISTON 3/4

05688 PISTON RING 3/4

05696 PISTON O-RING ¾

05703 PISTON SEAL ¾

05737 POPPET

SEAL 3/4

05745 POPPET

RETAINER 3/4



05597 WASHER A7.4


05612 NUT M5X.075


05471 TERMINAL

ASSEMBLY

05439 CONDUIT

ADAPTOR

(NOT INCLUDED WITH

05471 ASSEMBLY)

05943 BV GASKET BACKUP PLATE

05257 ACTUATOR SEAL

05265 ACTUATOR BLOCK

05314 O-RING

05322 O-RING

05330 ACTUATOR

ORIFICE

05620 SCREW M4X12

05901 ACTUATOR PLATE 3/4

05894 ACTUATOR GASKET 3/4

05954 BV ORIFICE

BLOCK ASSY

05330 ACTUATOR

ORIFICE

05322 O-RING

05314 O-RING

05273 O-RING

05330 ACTUATOR

ORIFICE

05446 TERMINAL

BLOCK SEAL

17598 SCREW M4X74

05455 SCREW M4X55

05348 COIL OPERATOR ASSY 24VAC

05489 COIL OPERATOR ASSY 12VDC

SMB-3Ea 9/97 H.E. Anderson Co.

SERIES SMC


For ¾" Type B Valve

24 VAC, P/N 06528

12 VDC, P/N 07914

05703 SEAL KIT 3/4

Contains:

1 ea. 05025* 1 ea. 05688

1 ea. 05696 1 ea. 05703

2 ea. 05737 1 ea. 05257

3 ea. 05273 1 ea. 05894

* Not used with electric valve

SMB-3Wc 1/02 H.E. Anderson Co.



05597 WASHER A7.4


05612 NUT M5X.075

05124 PISTON SLEEVE ½

05662 PISTON 3/4

05688 PISTON RING 3/4

05696 PISTON O-RING ¾

05703 PISTON SEAL ¾

05737 POPPET

SEAL 3/4

05745 POPPET

RETAINER 3/4


05017 ACTUATOR

BODY

05108 DOW PIN

05067 ACTUATOR

PIVOT ARM

05943 BV GASKET

BACKUP PLATE

05257 ACTUATOR

SEAL

05330 ACTUATOR

ORIFICE

05322 O-RING

05314 O-RING

05265 ACTUATOR

BLOCK

05273 O-RING

05901 ACTUATOR

PLATE 3/4

05894 ACTUATOR

GASKET 3/4

05083 SCREW M4X70

05091 SCREW M4X45

03947 PLASTIC SLEEVE

17210 HOLE PLUG ¾“ CLEAR

07246

BRASS

INSERT05025 ACTUATOR

DIAPHRAGM

05041 ACTUATOR

CAP

09721 1/4X1/8 ELBOW

05075 SCREW 8-32X7/8

05314 O-RING

05322 O-RING

05330 ACTUATOR ORIFICE

05620 SCREW M4X12

SERIES S MULTI-HEAD


For ¾" Type B Valve

Pressure Operated, P/N 06544

17532 SEAL KIT 3/4

Contains:

1 ea. 05025 1 ea. 05688

1 ea. 05696 1 ea. 05703

2 ea. 05737 1 ea. 05257

3 ea. 05273 1 ea. 05894

03781 SPRING

18776 ACTUATOR SLIDE

04367 NUT 1/4

h.e. anderson co. - pilot valve and manifold …pilot valves & manifolds pv-10 12/99 5 h.e....

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