# ANSI/IEEE Solenoid-valve NO auxiliary contact form Canonical URL: https://eloragrid.ai/symbols/ansi-solenoid-valve-no-auxiliary-contact Publisher: Elora Grid Updated: 2026-10-28 Lookup label: HSV21 Drawing use: Schematic Reference families: IEEE / ANSI, Manufacturer ## Symbol convention Convention: IEEE / ANSI Form: Solenoid Valve Auxiliary Normally Open Contact Autodesk IEEE Symbol Preview: Solenoids, block HSV21. Matching functional counterpart linked separately. Independently drawn educational geometry; not a certified IEEE glyph or database identifier. Related representation: [Solenoid-valve NO auxiliary contact](https://eloragrid.ai/symbols/iec-solenoid-valve-no-auxiliary-contact) IEEE-library form of solenoid-valve no auxiliary contact: this form identifies a normally-open auxiliary contact associated with a solenoid valve. ## In plain English ### What does ANSI/IEEE Solenoid-valve NO auxiliary contact form mean? This reference locates solenoid-valve no auxiliary contact in Autodesk's IEEE-oriented solenoids family. This form identifies a normally-open auxiliary contact associated with a solenoid valve. The public library uses HSV21 for its horizontal representation; this is a vendor block name, not an IEEE standards symbol number. ### A simple example Read the operating mechanism and the contact reference state together. Cross-reference every associated contact to the same device and show which movement, signal or reset changes its condition; the symbol alone does not establish the complete switching sequence. ### What the drawings help you do Cross-reference the operating mechanism or valve tag and state which position the contact reports. An auxiliary contact is not the power terminal of the solenoid coil. Cross-reference the operating mechanism or valve tag and state which position the contact reports. An auxiliary contact is not the power terminal of the solenoid coil. The linked functional counterpart explains the same operating role in its own drawing context; agreement of every detailed convention mark is not asserted. ### This particular reference IEEE-library form of solenoid-valve no auxiliary contact: this form identifies a normally-open auxiliary contact associated with a solenoid valve. An auxiliary contact is not the power terminal of the solenoid coil. ### Terms - Normally open / normally closed: The contact state in the normal condition defined for the drawing. - Coil: A wound conductor that can produce a magnetic field when energised. - Terminal: An identified point where a conductor connects. Concept diagram: Identify the device and form → Read the connections and state → Check the equipment reference A guide to reading this reference. The original symbol illustration and its drawing notes appear below; these boxes are not a wiring diagram. - [Autodesk IEEE Symbol Preview: Solenoids](https://help.autodesk.com/cloudhelp/2021/ENU/AutoCAD-Electrical/files/GUID-F7BADF45-D679-4050-BE46-0199A3A76230.htm) ## What it represents This reference locates solenoid-valve no auxiliary contact in Autodesk's IEEE-oriented solenoids family. This form identifies a normally-open auxiliary contact associated with a solenoid valve. The public library uses HSV21 for its horizontal representation; this is a vendor block name, not an IEEE standards symbol number. Read the operating mechanism and the contact reference state together. Cross-reference every associated contact to the same device and show which movement, signal or reset changes its condition; the symbol alone does not establish the complete switching sequence. Cross-reference the actuator or valve tag and state which position the contact reports. An auxiliary contact is not the power terminal of the solenoid coil. Cross-reference the actuator or valve tag and state which position the contact reports. An auxiliary contact is not the power terminal of the solenoid coil. The linked functional counterpart explains the same operating role in its own drawing context; agreement of every detailed convention mark is not asserted. ## How to read it - Cross-reference the actuator or valve tag and state which position the contact reports. - An auxiliary contact is not the power terminal of the solenoid coil. ## Information to show or reference - Identify the associated device, circuit or diagram boundary. - Cross-reference the actuator or valve tag and state which position the contact reports. - Cross-reference the equipment data, terminal mapping or operating-state legend needed to interpret the form. ## Important distinction An auxiliary contact is not the power terminal of the solenoid coil. ## Facts - Convention evidence: Autodesk IEEE Symbol Preview: Solenoids; published form: Solenoid Valve Auxiliary Normally Open Contact. - Public vendor block: HSV21. Vendor library token, not an IEEE symbol number. - Information added: Cross-reference the actuator or valve tag and state which position the contact reports. - Preview: Independent educational concept; consult the publisher and applicable standard for the exact graphic - Artwork scope: Original educational geometry. Exact standard graphics, product ratings and terminal pinouts are not certified. ## Public references - [Autodesk IEEE Symbol Preview: Solenoids](https://help.autodesk.com/cloudhelp/2021/ENU/AutoCAD-Electrical/files/GUID-F7BADF45-D679-4050-BE46-0199A3A76230.htm) — Autodesk. Public IEEE-oriented Solenoids table explicitly lists HSV21 as Solenoid Valve Auxiliary Normally Open Contact. This supports the vendor convention context, not reproduction of the publisher graphic. ## Graphic scope Independent original educational concept illustration by Elora Grid. Not a certified standards graphic or manufacturer footprint. Unitless; not to scale. Original artwork licence: https://creativecommons.org/licenses/by/4.0/. Publisher material is linked only.