Ball Valves

Product Overview

Alphex Engineers designs and manufactures high-precision Ball Valves engineered for the most demanding flow control environments. These quarter-turn valves provide a definitive bubble-tight shut-off, ensuring zero leakage in high-pressure and critical service applications. Adhering strictly to API 6D and ASME B16.34 standards, the Alphex Engineers ball valve range is the preferred choice for upstream, midstream, and downstream operations within the Oil & Gas and Petrochemical industries. Whether handling volatile hydrocarbons or corrosive process fluids, Alphex Engineers ensures structural integrity and operational longevity.

Design & Construction Features

The engineering team at Alphex Engineers incorporates a comprehensive suite of features to ensure safety, reliability, and regulatory compliance:

Ball Design Configuration :
- Floating Ball Design : Optimized for low-pressure sealing where the ball is pushed against the downstream seat.
- Trunnion Mounted Design : Fixed ball axis with spring-loaded seats, ideal for high-pressure and large-diameter services to reduce operating torque.
- Bore Profiles: Full Bore (FB) for piggable lines and minimal pressure drop; Reduced Bore (RB) for economical flow control.
Body Construction :
- One-Piece Body : Compact and robust
- Two-Piece Split Body : Facilitates easier maintenance.
- Three-Piece Bolted Body : Modular design allowing for center-section removal.
- Fully Welded Body : Eliminates potential external leak paths; ideal for buried service.
- Entry Types : Side Entry for standard maintenance; Top Entry for in-line repairability.
Sealing & Safety Systems :
- Blow-out Proof Stem : Internal entry design to prevent stem ejection under pressure.
- Anti-static Device : Ensures electrical continuity between ball, stem, and body.
- Fire Safe Design : Certified to API 607 / API 6FA to maintain sealing during fire events.
- Fugitive Emission Control : Low emission packing compliant with ISO 15848.
- Live Loaded Packing : Utilizes Belleville springs to maintain constant gland pressure.
Seat & Cavity Management :
- Bi-directional Sealing : Reliable shut-off from both flow directions.
- Cavity Pressure Self-Relief : Automatic venting of overpressure to the pipeline.
- Soft Seats : PTFE, RPTFE, PEEK, or Devlon for superior sealing.
- Metal Seated Option : Hard-faced for abrasive or high-temperature services.
Specialized Options :
- Sealant injection systems for emergency seat/stem lubrication.
- Extended bonnets for Cryogenic service.
- NACE MR0175/ISO 15156 compliance for sour gas environments.

Operation Options

Alphex Engineers provides versatile automation and manual control interfaces:

Manual : Lever operated or heavy-duty Worm Gear operated.
Automation : Pneumatic (Scotch Yoke/Rack & Pinion) or Electric Actuation with smart positioning.

Material of Construction (MOC)

Alphex Engineers utilizes premium-grade materials sourced from approved mills:

Body / Bonnet : ASTM A105, A350 LF2 (Low Temp), A182 F304/F316, A182 F51/F53/F55 (Duplex/Super Duplex), A216 WCB/WCC, A351 CF8/CF8M, A995 4A/5A/6A.
Exotic Alloys :Inconel 625/718, Monel 400, Hastelloy C276, Nickel Aluminium Bronze (C95800).
Ball & Stem :SS316, 17-4 PH, Duplex, or Inconel with hard coatings like Electroless Nickel Plating (ENP), Chrome Plating, or Tungsten Carbide (TCC).