Description

Product Technical Data Sheet

Product Name: Electric Modulating Gate Valve
Model / Size: 42″ – 600LB – RF / API 600 / Limitorque SMC-5 Actuator

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1. General

This product is a large-diameter, electric motor-operated gate valve designed for modulating control service. The valve features a bolted bonnet, outside screw and yoke (OS&Y) construction with a rising stem. The Limitorque SMC-5 multi-turn electric actuator provides precise modulating control with 4-20mA position feedback. Suitable for critical applications in oil & gas transmission, pipeline systems, power generation, water treatment, and industrial process control where large flow rates require accurate throttling capability.

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2. Basic Parameters

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3. Design & Manufacturing Standards

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4. Main Valve Component Materials

*Note: For sour gas service (H₂S), NACE MR0175 compliant materials with Trim 12 configuration are available. For high-temperature steam applications up to 454°C, Trim 5 or Trim 8 with full Stellite hardfacing is recommended .*

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5. Dimensions & Weight (Approximate)

*Note: Dimensions and weight are approximate and subject to final engineering confirmation. 42″ Class 600 gate valves are typically custom-engineered items requiring manufacturer-specific dimensional data.*

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6. Limitorque SMC-5 Electric Actuator Specifications

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7. Operating & Performance Data

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8. Features

1. API 600 Compliant Design
   Heavy-duty cast steel gate valve meeting the rigorous requirements of API 600 for petroleum and natural gas industry applications. Designed for long service life and reliable performance .

2. Flexible Wedge Design
   The flexible wedge compensates for thermal expansion and prevents binding under varying temperature conditions. Wedge is fully guided to prevent dragging and seat damage .

3. Stellite Hardfaced Seating Surfaces (Trim 8)
   Both seat rings and wedge facing are hardfaced with cobalt-chromium alloy (Stellite), providing exceptional wear resistance and erosion protection for high-temperature steam and severe service applications .

4. OS&Y (Outside Screw & Yoke) Construction
   Stem threads are positioned outside the valve body, protected from media contact, ensuring smooth operation and extended stem life. Non-rotating rising stem design provides visual position indication .

5. Backseat Facility
   Integral backseat allows packing replacement under full line pressure, facilitating in-line maintenance without system shutdown.

6. Limitorque SMC-5 Modulating Actuator

   • Precise Positioning: 4-20mA control with ±0.5% accuracy ensures reliable throttling performance.

   • Non-Intrusive Commissioning: All settings and diagnostics accessible without removing actuator covers.

   • Integral Torque and Position Limiting: Protects valve and actuator from damage due to over-travel or excessive torque.

   • Manual Override: Handwheel for emergency operation during power loss.

7. Blow-out Proof Stem
   Stem retention design prevents blowout under pressure, ensuring operator safety.

8. Anti-Static Design (Optional)
   Electrical continuity between stem, wedge, and body prevents static charge accumulation.

9. Fire-Safe Design (Optional)
   Available with secondary graphite packing for fire-safe certification per API 607 / API 6FA.

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9. Optional Features & Upgrades

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10. Ordering Information

Please confirm the following when placing an order:

1. Valve Size & Pressure: 42″ – 600LB Class;

2. Body Material: WCB (carbon steel) / LCB (low temp) / WC6 (high temp) / Stainless steel;

3. Trim Selection: API Trim 1, 5, 8, or 12 ;

4. Seat Material: Soft seat (PTFE) / Metal seat (Stellite hardfaced);

5. End Connections: Flanged RF (ASME B16.5) / Butt-weld ends / RTJ;

6. Face-to-Face Dimension: ASME B16.10 long pattern;

7. Actuator Model: Limitorque SMC-5 with modulating control (4-20mA);

8. Actuator Power Supply: 480V/60Hz / 380V/50Hz / other;

9. Control Signal Type: 4-20mA modulating with position feedback;

10. NACE Compliance: Yes / No – specify MR0175 or MR0103;

11. Fire-Safe Certification: API 607 / API 6FA required;

12. Special Requirements: High-temperature service, cryogenic service, by-pass valve, communications protocol, explosion-proof rating.

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Version: V1.0
Date: 2026