Overview

The Bettis Multiport Flow Selector is a specialized valve designed for selecting and diverting well fluids from multiple wells to a single test outlet or loop. It is widely used in oil, gas, and process applications, particularly suited for multiphase meters. The device supports up to eight flow lines and offers a compact, cost-effective solution for fluid selection and isolation.

Key Features

• Manufactured according to ASME B16.34 standards.
• Field-adjustable seal with stainless steel scraper for extended service life.
• Fire tested to API 6FA.
• Operable manually or electrically with options for AC or DC motors.
• Compact manifold design reduces size and weight.
• Electric operators include mechanical limit switches or the Bettis Multiport Electronic Controller (MEC).
• Optional push button station, digital display, and third-party certifications (e.g., DNV).

Specifications

• Body and bolting materials vary by application (see material data).
• Seal materials and internal coatings available for sour service and enhanced abrasion/corrosion resistance (e.g., Nickel Plate, Inconel, Stellite, Impreglon).
• Motor specifications: 1/4 HP–1/3 HP, 115/230 VAC or 24 VDC, 1725 RPM, TEFC.
• Gear reducer: double reduction worm, oil bath, 1200:1 ratio, 1.4 RPM plug rotation.
• Plug position accuracy within ±2°.
• Switchpak model SW28D-BCT certified for hazardous locations (CSA, Class I, Div 1, Groups C & D).

Material Construction

Materials conform to ASME B16.34 and include options for standard, NACE, low temperature, and stainless steel trims. Key components such as body, bonnet, plug, seat ring, and seals are made from materials like A216-WCB, A351-LCC, A351-CF3M, PTFE seat inserts, and AFLAS O-rings to suit various service conditions.

Dimensional and Performance Data

The selector is available in multiple sizes and pressure classes (150 to 1500 ASME), with flange sizes ranging from 2x4 inches up to 6x16 inches. Typical weights range from approximately 193 kg to 1880 kg depending on size and rating. Performance data includes maximum shell pressure ratings, static and dynamic seat differential pressures, breakaway torque, and flow coefficients (Cv). Seat leakage meets ANSI/FCI 70-2 Class IV standards (≤0.01% Cv leakage).

Seat Design and Assembly

The valve features a resilient seat insert with backup plates and O-ring seals, dual stem seals, and a stainless steel scraper to maintain seal integrity and reduce maintenance.

Multiport Electronic Controller (MEC)

The MEC is a microprocessor-based controller designed to precisely position and monitor the Multiport Flow Selector rotor. It uses an absolute optical encoder for accurate rotor position tracking and memory retention without power. Communication protocols include ASCII and Modbus RTU via RS232 or RS485. The controller compensates for torque changes, supports disabling unused ports, and reduces installation wiring complexity.

• Supports remote and local operation modes with jog, step, move, and stop commands.
• Diagnostic features include equipment failure detection, communication timeout handling, and port change counting.
• Optional digital display for valve position indication.
• Certified for hazardous locations (Class 1 Div. 1, Groups C & D, CSA certified).
• Operating temperature range: -40°F to +212°F (-40°C to +100°C).

Electrical and Wiring Details

The MEC supports input voltages from 48–240 VAC or 6–100 VDC with solid-state relays and transformers/regulators. The board operates at 8–30 VDC or 9–20 VAC with a maximum current of 0.5 A and includes lightning protection and conformal coating. Communication is at 9600 baud, 8-bit, no parity, 1 stop bit.

Installation and Operation Notes

• Switchpak rotary position indicating switch model SW28D-BCT is supplied with 8 adjustable switches for shaft rotation indication.
• Command and indication circuits must use the same voltage.
• Specific wiring instructions for plug rotation and port selection are provided.

Ordering and Certification

The product is ISO 9001 certified and available with various options including third-party certifications such as DNV. Emerson Process Management reserves the right to modify specifications and designs without notice.

Contact Information

Manufactured and supported by Bettis, part of Emerson Process Management, with offices in the USA, UK, Canada, France, and international sales offices in Canada, India, and Singapore.