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Masoneilan SVI2-21123111 SVI2 AP Smart Digital Valve Positioner With Full Valve Diagnostics

1
MOQ
US $1800.00 - 2000.00/ Set
Price
Masoneilan SVI2-21123111 SVI2 AP Smart Digital Valve Positioner With Full Valve Diagnostics
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
Basic Infomation
Place of Origin: china
Brand Name: Masoneilan
Model Number: SVI2-21123111
Payment & Shipping Terms
Packaging Details: Cardboard box/Wooden crate
Delivery Time: 4-6 weeks
Payment Terms: T/T
Supply Ability: 3000 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 zones.
  2. Petrochemical & Chemical: Applied in reactor flow control, hydroprocessing, cracking and fractionation processes, compatible with corrosive process media environments.
  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 loops.
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 regulator.
  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 abnormal.
Replacement Models
  1. SVI2-21113111: Single-acting basic configuration of SVI II AP series, fully interchangeable mounting footprint for direct drop-in replacement.
  2. SVI2-22123121: Double-acting variant with enhanced diagnostic functions, compatible with existing installation brackets and accessorie.
  3. Masoneilan SVI3 Series: Third-generation upgraded digital positioner with optimized control algorithm, backward compatible with SVI II AP mounting interface.
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.
A
Amir Rezaei
United Arab Emirates Jan 6.2026
Helpful (6)
We have been cooperating for 3 years with stable supply and reliable service
Z
zahir mustafa
United States Feb 26.2025
Helpful (6)
Happy to work with them, fast response, hope to do more business with them soon
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Contact Person : Mr. Edward Zhao
Tel : +8615000725058
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edward.zhao@gongboshi.com
+8615000725058
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