Made-in-China.com indexed 483 electric-actuator-for-gate-valve manufacturers offering 1,449 product SKUs as of 24 December 2025, the largest public supplier pool of its kind [S6]. Quarter-turn part-turn actuators for gate and ball valves cluster in a US$500–1,000 per-piece export band, while explosion-proof rotary units and 24V AC/DC modulating actuators for pressure-independent control valves (PICV) sit above that floor [S4][S2].
China-hosted vendor rosters also absorb the linear and OEM-embedded segment: Shanghai Kgg Robots Co., Ltd. alone lists PT120 variable-pitch slide, HST80 linear-motor and ZRIN28 lens-assembly actuators on the platform between January 9 and 23 January 2026 [S2]. The supplier set splits cleanly into three engineering cohorts — process-valve quarter-turn, HVAC/modulating low-voltage, and precision linear — and each cohort carries different certification, signal, and enclosure expectations.
Supplier Pool Size and Product Mix
The Made-in-China.com electric-actuator-for-gate-valve index returns 483 manufacturers and 1,449 SKUs against the single keyword "electric actuator for gate valve" [S6]. Search pages rotate thousands of part-turn listings, of which the Durable Industrial Compact Part Turn Electric Actuator for a Gate Valve is priced US$500–1,000 per piece, a band that recurs across multiple anonymous factory storefronts [S4]. Solidat Applied Technologies Ltd. advertises itself as a "leading" Chinese electric-actuator manufacturer and supplier with in-stock OEM units available directly from its Wenzhou-area factory [S5]. Anshan Puyuan Automatic Control Actuator Co., Ltd., based at Tiexi Shuangtai Street No. 41, Anshan, Liaoning, operates an ISO 9001-certified instruments-and-meters business registered in 2016 [S1].
The platform's sub-category counts tilt heavily toward process-valve mounts: the Shanghai-region product page exposes a six-row front list that already mixes process actuators (24V AC/DC modulating, 0–10 V PICV control, DC12V large-torque motorized ball valves) with linear-rail precision slides [S2]. This breadth is consistent with a 1,449-SKU population for a single valve keyword — implying tens of thousands more SKUs across the wider "electric actuator" taxonomy on the same B2B portal [S6].
Quarter-Turn Versus Linear: Operating Envelope Compared
Quarter-turn TOP-series electric rotary actuators from Tuoerpu are specified for 0–90° rotation valves, covering butterfly, ball, throttle, plug and louver types; the 24 V aluminium-bodied variant accepts 4–20 mA current or 0–10 V DC voltage as control signal [S3]. For 12 V precision variants, the same vendor publishes an angular-stroke rotary actuator aimed at small-torque butterfly and ball valves, with the 1/4-turn on-off product line adding position sensing, torque sensing and electronic protection beyond simple switching [S3]. A useful reference frame for the engineering distinction between rotational and straight-line motion sits in the linear actuator encyclopedia entry.
On the linear side, KGG's PT120 variable-pitch slide targets versatile linear positioning, the HST80/80S integrates a built-in guideway for high-precision motion, and the ZRIN28 combines linear and rotary motion for lens-assembly automation [S2]. The mechanical contrast is best framed against the electric actuator reference, which maps torque, stroke, and signal-protocol envelopes; for rotary valve mounts the electric ball valve encyclopedia page provides the assembly-level sizing context. Where the application is a modulating PICV rather than a manual override, a 24 V AC/DC motorised actuator with 0–10 V control is now a stock SKU on Hengkong Building Technology (Shanghai) Co., Ltd.'s storefront, dated 17 November 2025 [S2].
Signal Protocols, Voltages, and Explosion-Proof Builds
The 24 V aluminium quarter-turn actuator explicitly lists 4–20 mA and 0–10 V DC as the supported control-signal pair, both industry-standard analogue command channels for valve positioners [S3]. The DC12V large-torque electric ball valve with manual operation and position indicator sits in a 2-way, 2-inch PVC body, giving a representative low-voltage residential/light-industrial SKU [S2]. For hazardous-area service, Tuoerpu publishes a dedicated "Electric Rotary Explosion Proof Actuator" product line, signalling Ex-rated housing and terminal sealing as a differentiator from its general-purpose TOP series [S3].
Quarter-turn on-off SKUs in the same vendor's catalogue are described as "far beyond simple switching," with integrated position sensing, torque sensing, and electronic protection features migrating from the smart-actuator tier into mid-market part-turn units [S3]. The pneumatic actuator encyclopedia page gives the comparative baseline — pneumatic units still dominate fail-safe spring-return service, but electric quarter-turn is now the default for on-off and modulating duties where plant air is unavailable. For heavier linear thrust, the hydraulic actuator reference remains the relevant comparison; the electric pallet truck page shows the same 24 V DC architecture scaled into mobile-material-handling OEM designs.
Selection Criteria for a 2026 Buy Decision
Match the actuator to duty class first: part-turn quarter-turn (0–90°) for butterfly/ball/throttle/plug/louver, and linear for sliding-gate or dosing-skid applications [S3][S2]. Voltage follows the plant: 24 V AC/DC and 0–10 V is the dominant signal/rail pair for HVAC PICV and light-industrial retrofits; 12 V DC and DC-motorised drives target OEM embedded and battery-backed use cases [S2]. For hazardous-area service, restrict the shortlist to explosion-proof rotary product lines that explicitly list Ex-rated enclosures and terminal compartments [S3].
For supply-chain risk-spreading, the public 483-factory index on Made-in-China.com is large enough to support three-source qualification per SKU [S6]. In-stock programmes, such as Solidat Applied Technologies' direct-factory offer, reduce the lead-time penalty for small-batch orders [S5]. Anshan Puyuan's ISO 9001 registration, recorded on the platform profile, is the minimum quality-system filter to apply before sampling; larger OEMs should also demand model-specific type-test certificates for the explosion-proof line [S1][S3]. For a parallel reference on how factory floors plan tonnage and throughput, the swing check valve sizing and selection article maps the same DN/pressure-class decision logic onto adjacent fluid-control SKUs.
Failure Modes, Constraints, and Engineering Cautions
Quarter-turn on-off actuators' added position and torque sensing do not eliminate mechanical wear in the gear train; spec sheets still cap duty cycles and ambient temperature, with the 1/4-turn line requiring confirmation of lubrication interval and seal kit availability before order placement [S3]. Linear slides such as the KGG PT120 and HST80 series are positioning-class devices — their published accuracy is for assembly and metrology duty, not for continuous thrust applications where the hydraulic actuator envelope is more appropriate [S2].
12 V rotary units and 24 V AC/DC modulating actuators share the same low-voltage DC-rail architecture as electric pallet truck drives, but the latter are mobile with battery-thermal limits; a stationary PICV actuator does not have the same duty-cycle derating, yet both are constrained by the same brush-and-commutator service-life curves. For modulating service on a pressure-independent control valve, verify that the selected 0–10 V or 4–20 mA input is wired to a true positioner, not a simple on-off relay — a frequent field mismatch in retrofits [S2][S3].
Standards, Certification, and Audit Trail
Supplier-side certification visible on the Made-in-China.com profile pages is limited to ISO 9001 management-system statements, as in the Anshan Puyuan record [S1]. Explosion-proof product lines, such as Tuoerpu's Electric Rotary Explosion Proof Actuator, imply ATEX/IECEx third-party certification, but the specific certificate numbers and notified-body IDs are not in the public source text and must be requested per shipment [S3]. For European chemical-plant and refinery buyers, a separate Ex d/Ex e rating on the nameplate and a valid IECEx Certificate of Conformity remain the non-negotiable purchasing conditions; OEM datasheets should be cross-checked against the IEC 60079 series' equipment-protection-level table before any PO is released.
Public sourcing pages do not disclose full material traceability, torque-test curves, or EMC test reports; sample-evaluation clauses for ingress protection (IP65/IP67) and enclosure salt-spray ratings must be written into the RFQ [S2][S6]. For an adjacent equipment category where standards mapping is more fully documented, the swing check valve selection for automotive service reference illustrates the same body/borel/seat spec discipline applied to a different valve family.
Trackable signals to watch through Q4 2026: the count of explosion-proof rotary SKUs and the public upload of IECEx/ATEX certificate numbers on Tuoerpu's storefront, and any new in-stock listings on Solidat's factory page beyond the current 2026-07-23 update [S5][S3]. For the 1,449-SKU gate-valve cohort, monitor the ratio of part-turn to multi-turn units — a shift toward multi-turn would indicate gate-valve retrofit demand, while a flat part-turn skew confirms quarter-turn as the 2026 default for new process plants [S6][S4].