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Masoneilan SVI II AP Digital Valve Positioner SVI2 21123111 HART Smart Positioner 4-20mA

1
MOQ
US $1700.00 - 1950.00/ Set
Price
Masoneilan SVI II AP Digital Valve Positioner SVI2 21123111 HART Smart Positioner 4-20mA
Features Gallery Product Description Ratings & Review Request A Quote
Features
Specifications
Signal - Communication: HART 5 Or 7 Over 4-20mA
Diagnostics: Standard Diagnostics
Construction / Materials: Copper-free Aluminum Housing
Valve Size: 1/4NPT
Highlight:

Masoneilan SVI II AP digital valve positioner

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HART smart positioner 4-20mA

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pneumatic control valve positioner
Basic Infomation
Place of Origin: China
Brand Name: Masoneilan
Model Number: SV II
Payment & Shipping Terms
Packaging Details: Cardboard box/Wooden crate
Delivery Time: 4-6 weeks
Payment Terms: T/T
Supply Ability: 6000 sets per year
Product Description
Masoneilan SV II AP Advanced Performance Digital Valve Positioner (Model: SVI2-21123111)
Product Overview
  1. 32-bit microprocessor-powered smart valve positioner with 2-wire 4-20mA control signal and bi-directional HART protocol communication for remote configuration and real-time monitoring
  2. Adopts non-contact position sensing technology with no internal moving parts, delivering high positioning accuracy and strong resistance to vibration, temperature fluctuation and corrosion
  3. Universal modular design fits both single/double-acting pneumatic actuators and linear/rotary valves, enabling direct retrofit for Masoneilan and third-party valve assemblies.
Technical Specifications
Parameter Specification
Input Signal 4-20 mA with HART 5/7 Protocol
Supply Pressure Single-acting: 1.4–6.9 bar (20–100 psig); Double-acting: 1.4–10.3 bar (20–150 psig)
Positioning Accuracy ±0.5% of full span
Repeatability ±0.3% of full span
Flow Capacity 280 SLPM @ 30 psi
Operating Temperature -50°C to +85°C
Enclosure Rating IP66
Housing Material Copper-free aluminum with epoxy coating
Certifications ATEX, IECEx, FM, CSA (hazardous area approved)
Actuator Compatibility Single-acting & double-acting pneumatic actuators (linear / rotary)
Application Industry
  1. Oil & Gas: Deployed in upstream production, midstream pipelines and refinery distillation units, certified for safe operation in explosive hazardous zonesBaker Hugh....
  2. Petrochemical & Chemical: Applied in reactor flow control, hydroprocessing, cracking and fractionation processes, compatible with corrosive process media environmentsMade-in-Ch....
  3. Power Generation: Used for steam turbine systems, heat recovery steam generators and balance-of-plant valve automation, ensuring stable regulation of water and steam loopsBaker Hugh....
Common Problems & Solutions
  1. Position drift / calibration offset: Trigger auto-stop and auto-tune function via local buttons or ValVue software; verify stable supply air pressure and clean filter regulatorBaker Hugh....
  2. No pneumatic output / signal non-response: Inspect 4-20mA input wiring and power supply; check for blockage in air supply path and I/P converter module.
  3. Fault alarm activation: Record error code via HART communicator; check magnet mounting alignment; restore factory default settings if parameter configuration is abnormalBaker Hugh....
Replacement Models
  1. SVI2-21113111: Single-acting basic configuration of SVI II AP series, fully interchangeable mounting footprint for direct drop-in replacementAlibaba.co....
  2. SVI2-22123121: Double-acting variant with enhanced diagnostic functions, compatible with existing installation brackets and accessoriesMade-in-Ch....
  3. Masoneilan SVI3 Series: Third-generation upgraded digital positioner with optimized control algorithm, backward compatible with SVI II AP mounting interfacesMade-in-Ch....
Why Buy From Us
  1. 100% original authentic Baker Hughes Masoneilan products with full factory quality certificates and 12-month standard warranty.
  2. Dedicated technical team with certified flow control engineers, providing pre-sales model selection and after-sales commissioning troubleshooting support.
  3. Rich overseas trade experience, supporting EXW, FOB, CIF and other trade terms with complete export customs clearance documents.
Stock & Delivery Time
  1. Standard model SVI2-21123111 is kept in local warehouse stock, can be dispatched within 2 working days upon payment confirmation.
  2. Bulk orders (10 units and above): 7–10 working days preparation lead time with reinforced export packaging.
  3. International logistics: Express delivery (DHL/FedEx/UPS) takes 5–7 working days to most global regions; sea freight available for large volume orders.
Ratings & Review

Overall Rating

5.0
Based on 50 reviews for this supplier

Rating Snapshot

The following is the distribution of all ratings
5 stars
100%
4 stars
0%
3 stars
0%
2 stars
0%
1 stars
0%

All Reviews

D
Daulet Nurgazin
Kazakhstan Mar 19.2026
Helpful (3)
I purchased the Flowserve 3821 and am very satisfied with the overall transaction. The item arrived in good condition, matched the specifications accurately, and performed as expected. The seller demonstrated strong professionalism, provided a reasonable price, and ensured the delivery schedule was met. A dependable supplier that I would confidently work with again.
L
leyla kh
United Arab Emirates Sep 12.2025
Helpful (10)
We purchased 20 units of valve positioners for a refinery project in UAE. Delivery was fast and technical support was very professional.
A
Anggoro Fikri
Indonesia Jan 31.2025
Helpful (2)
good quality
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