CAMTOP Model M Threaded End Gate Valve

Key Features & Advantages

Technical Specifications

Figure 1 — CAMTOP Model M Gate Valve dimensional reference showing measurement points A, B, C, and D

— Dimensional Data

The CAMTOP Model M Gate Valve is engineered with precise dimensional standards across three pressure classes. All dimensions are measured per API 6A specifications.

Dimension Reference Guide

Oilfield Applications

The CAMTOP Model M Gate Valve is widely deployed across upstream oil and gas operations requiring reliable fluid isolation:

• Wellhead isolation and primary flow control systems
• Christmas tree (Xmas tree) installations and kill wing valves
• Manifold systems, choke manifolds, and flowline headers
• Production testing and high-pressure fluid handling
• Drilling rig floor equipment and workover operations
• Safety system integration and emergency shut-off circuits

Materials & Construction Standards

Operating Principle

The CAMTOP Model M operates as a wedge-type rising stem gate valve. The gate moves perpendicular to the flow path, seating against precision-ground seat faces to achieve a metal-to-metal seal.

Opening Procedure

Rotate the handwheel counterclockwise (CCW). The rising stem assembly translates rotary motion into linear travel, retracting the wedge gate from between the seats. Continue until the gate is fully retracted into the bonnet area — indicated by the stem reaching its upper travel limit. At this point, the full-bore opening provides unrestricted flow with minimal pressure drop.

Closing Procedure

Rotate the handwheel clockwise (CW). The stem descends, driving the wedge gate into the tapered seat cavity. Apply sufficient torque until firm resistance indicates the gate has bottomed and achieved a bubble-tight metal-to-metal seal. Avoid excessive over-torque that may damage seat surfaces or deform the gate body.

Maintenance & Inspection Guidelines

• Packing Inspection: Check stem packing for leakage at every maintenance interval. Re-tighten gland follower nuts incrementally, or replace the complete packing set if leakage persists after retightening.
• Handwheel Lubrication: Verify smooth rotation without binding. Apply anti-seize lubricant to handwheel nut threads and yoke bushings at scheduled intervals.
• Visual Inspection: Examine body flanges, bonnet connection, and end threads for signs of corrosion, stress cracking, mechanical damage, or thread galling before each installation.
• Pressure Testing: Conduct hydrostatic shell test at 1.5× working pressure and low-pressure seat test per API 6A / API Spec 6FA fire-safe requirements annually or after major service events.
• Seat Replacement: Replace worn gate and seat assemblies when seat leakage exceeds acceptable limits. Always replace matched sets together to maintain sealing integrity.
• Storage Protocol: When not installed, store valves in a clean, dry, climate-controlled environment with internal cavities coated with rust-preventive compound and end openings capped.

Quality Assurance & Compliance

All CAMTOP Model M Gate Valves are manufactured under a comprehensive quality management system conforming to ISO 9001:2015 and API Q1 specifications. Each valve undergoes:

• Full hydrostatic shell and seat testing at factory-rated pressure
• Dimensional inspection per API 6A tolerance requirements
• Material traceability with certified mill test reports (MTR)
• NACE MR0175 compliance available upon request for sour service environments
• Fire-safe design testing per API Spec 6FA where specified

Ordering Information

To ensure accurate fulfillment, please specify the following parameters when requesting quotation for CAMTOP Model M Gate Valves: