The actuator on my automated valve operates, but the valve won’t turn. Why?

Most likely the valve stem or actuator coupling is broken.

Why doesn’t my valve open or close completely when the actuator operates it?

The electric actuator limit switches or the pneumatic actuator position stops are not correctly adjusted.

When I energize the solenoid on my pneumatic actuated valve, the valve won’t turn. How come?

Probably because there is no air pressure to the solenoid or dirt has jammed it. Also, debris might be trapped inside the valve. Or, the air pressure is not sufficient to operate the actuator. Remember: measure air pressure at the actuator, not at the compressor.

Can I buy an actuator from one manufacturer and mount it to a valve from another manufacturer?

Maybe. First, be sure that the actuator torque output is sufficient to turn the valve reliably. Second, you will have to fabricate a custom mounting bracket and coupling to connect the actuator to the valve.

What happens if I lose power to my electric actuator in the middle of an actuation cycle?

The valve will stop somewhere between full open and close. When power is reapplied to the original circuit, the actuator will complete the cycle.

I ordered a fail open pneumatic actuated valve by mistake. I needed a fail closed one. What can I do?

To make the change just remove the actuator from the valve and turn it, or the valve stem, 90 degrees and remount the actuator.

I’ve installed my automated valve in the line, but now I don’t know if the valve is in the open or closed position. How can I find out?

Remove the actuator from the valve and check the valve stem. Most ball valves have stem flats at right angles to the flow when the valve is in the off position. On butterfly valves check the stem flow arrow marking.

Do I have to have the solenoid valve that controls the air supply to my pneumatic actuator mounted right on the actuator?

Remove the actuator from the valve and check the valve stem. Most ball valves have stem flats at right angles to the flow when the valve is in the off position. On butterfly valves check the stem flow arrow marking.

How do I wire up my electric actuator?

Check the electric wiring schematic that came with the actuator for the correct hookup. Sometimes a copy is inside the actuator cover. If it is missing, don’t guess about the connections. Call the manufacturer for a schematic.

I’ve just installed an electric actuated valve and when I power it, it turns the valve 360 degrees and won’t shut off. What’s wrong?

The actuator is wired incorrectly (check the schematic accompanying the actuator), or the external control switch is not the correct type for the actuator.

My electric actuators cycle time is way too fast, can I slow it down?

Not unless you bought it with an optional speed control.

I just replaced a solenoid valve with an electric actuated valve and it won’t work. Why?

Actuators and solenoid valves require different types of electrical control switches. SPDT for actuators, SPST for solenoids. Check the actuator wiring schematic for the correct wiring and switch type.

HK59-D-G Series 4 inch Metal Seated Pneumatic Actuator Operated Butterfly Valve

HK59-D-G serije 4 palcev s kovinskim sedežem, ki ga upravlja pnevmatski pogon

Three eccentric butterfly valve is widely used in metallurgy, electric power, petrochemical industry, water supply and drainage, municipal construction and other industrial pipelines with medium temperature ≤ 425 ℃, for regulating flow and breaking fluid. Normally material: cast iron, cast steel, stainless steel. If the stem axis deviates from the disc center and the body center at the same time, and the rotation axis of the valve seat has a certain angle with the channel axis of the valve body, it is called three eccentric butterfly valve

Model: HK59-D-GF
Size Range: 2”~18”
Pressure Range: 1.0MPa to 2.5MPa
Material: Stainless Steel

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COVNA HK59-D-GF Pneumatic three eccentric butterfly valve, the valve body part adopts three eccentric structure, the valve plate and sealing mechanism are unique in design, with excellent cutting performance and durability, as well as dual functions of cutting and adjusting. It is small in size, light in weight, economical and practical, and easy to maintain; Low friction, high efficiency, high thrust and good safety; Simple, eye-catching, reliable and integrated travel indication, combined installation of limit switch and solenoid valve, no external pipeline, reducing leakage point; It can realize bidirectional sealing function, which can be adjusted and cut off

A variety of actuator forms are available for selection to meet the requirements of different users; The design of flexible and combined actuator (manual mechanism) can ensure the free installation and flexible control in all directions

Technical Parameters of Valve Actuator

Double acting	Air to open, air to close, air supplier failure to keep the current position
Single acting N/C	Air to open, interrupt air to close, air failure to close
Single acting N/O	Air to close, interrupt air to open, air failure to open
Optional accessory	Reversing solenoid valve, limit switch box, air filter reducing valve, positioner, handle manual, lock up valve.

Tehnični parametri telesa ventila

Body		Sestavni deli ventilov
Size range	DN50~DN400	Material za tesnjenje	Iz nerjavečega jekla
Body material	Stainless tseel	Core material	Iz nerjavečega jekla
End conection	Wafer, Flange	Stem material	Iz nerjavečega jekla
Operating pressure	1.0, 1.6MPa	Veljavni mediji	Water, oil, Gas, Liquid, steam, powder, anti-corrosive base
Struktura	Midline Structure/ A-type	Veljavni mediji	Water, oil, Gas, Liquid, steam, powder, anti-corrosive base

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Technical Parameters of Valve Actuator

Double acting	Air to open, air to close, air supplier failure to keep the current position
Single acting N/C	Air to open, interrupt air to close, air failure to close
Single acting N/O	Air to close, interrupt air to open, air failure to open
Optional accessory	Reversing solenoid valve, limit switch box, air filter reducing valve, positioner, handle manual, lock up valve.

Tehnični parametri telesa ventila

Body		Sestavni deli ventilov
Size range	DN50~DN400	Material za tesnjenje	Iz nerjavečega jekla
Body material	Stainless tseel	Core material	Iz nerjavečega jekla
End conection	Wafer, Flange	Stem material	Iz nerjavečega jekla
Operating pressure	1.0, 1.6MPa	Veljavni mediji	Water, oil, Gas, Liquid, steam, powder, anti-corrosive base
Struktura	Midline Structure/ A-type	Veljavni mediji	Water, oil, Gas, Liquid, steam, powder, anti-corrosive base

Pogon na mojem avtomatiziranem ventilu deluje, vendar se ventil ne obrne. Zakaj?

Najverjetneje je zlomljeno steblo ventila ali sklopka pogona.

Zakaj se moj ventil ne odpre ali zapre v celoti, ko ga pogon upravlja?

Končna stikala električnega pogona ali pnevmatski omejevalniki položaja pogona niso pravilno nastavljeni.

Ko vklopim elektromagnet na svojem pnevmatskem ventilu, se ventil ne zavrti. Kako to?

Verjetno zato, ker v elektromagnetu ni zračnega tlaka ali pa se je v njem zataknila umazanija. V ventilu so lahko ujete tudi nečistoče. Ali pa zračni tlak ni zadosten za delovanje aktuatorja. Ne pozabite: zračni tlak izmerite na aktuatorju in ne na kompresorju.

Ali lahko kupim pogon enega proizvajalca in ga namestim na ventil drugega proizvajalca?

Morda. Najprej se prepričajte, da je izhodni navor pogona zadosten za zanesljivo vrtenje ventila. Drugič, izdelati boste morali montažni nosilec in spojko po meri za povezavo pogona z ventilom.

Kaj se zgodi, če električno gonilo izgubi napajanje sredi cikla sprožitve?

Ventil se ustavi nekje med popolno odprtostjo in zaprtostjo. Ko se v prvotni tokokrog ponovno dovede električna energija, bo aktuator dokončal cikel.

Po pomoti sem naročil pnevmatski ventil, ki se odpira po pomoti. Potreboval sem neuspešno zaprtega. Kaj lahko storim?

Za spremembo samo odstranite aktuator z ventila in ga ali steblo ventila obrnite za 90 stopinj ter ponovno namestite aktuator.

V linijo sem namestil samodejni ventil, vendar zdaj ne vem, ali je ventil v odprtem ali zaprtem položaju. Kako lahko to ugotovim?

Odstranite pogon z ventila in preverite steblo ventila. Pri večini krogelnih ventilov je steblo plosko pod pravim kotom glede na tok, ko je ventil v izklopljenem položaju. Pri metuljnih ventilih preverite oznako puščice za pretok na steblu.

Ali mora biti elektromagnetni ventil, ki krmili dovod zraka v pnevmatski pogon, nameščen neposredno na pogon?

Kako priključim električni pogon?

Pravilno priključitev preverite v shemi električnega ožičenja, ki je priložena aktuatorju. Včasih je kopija v pokrovu aktuatorja. Če je ni, ne ugibajte o priključkih. Za shemo pokličite proizvajalca.

Pravkar sem namestil ventil z električnim pogonom in ko ga vklopim, se ventil obrne za 360 stopinj in se ne izklopi. Kaj je narobe?

Pogon je napačno ožičen (preverite shemo, ki je priložena pogonu) ali pa zunanje krmilno stikalo ni pravilnega tipa za pogon.

Čas cikla mojega električnega pogona je prehiter, ga lahko upočasnim?

Ne, razen če ste ga kupili z dodatnim nadzorom hitrosti.

Pravkar sem zamenjal elektromagnetni ventil z električnim ventilom in ne deluje. Zakaj?

Aktuatorji in elektromagnetni ventili zahtevajo različne vrste električnih krmilnih stikal. SPDT za aktuatorje, SPST za elektromagnetne ventile. Za pravilno napeljavo in tip stikala preverite shemo napeljave aktuatorja.

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HK59-D-G serije 4 palcev s kovinskim sedežem, ki ga upravlja pnevmatski pogon

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HK59-D-G serije 4 palcev s kovinskim sedežem, ki ga upravlja pnevmatski pogon

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