QUADRANT ASME B16.34 / API 608 BALL VALVE

🔧 Product Description: Quadrant Ball Valve (ASME B16.34 / API 608)

Overview

This is a high-performance, quarter-turn—floating or trunnion-mounted—ball valve designed in accordance with ASME B16.34 and API 608 standards to ensure robust pressure containment and leak-tight operation. Built for demanding industrial environments, its rugged construction meets strict safety and performance benchmarks.

Key Specifications

• Standards Compliance:

  • ASME B16.34: Governs pressure–temperature ratings, shell/thickness requirements, materials, and strength testing 

  • API 608: Covers metal ball valves used in on–off service, defining bore types (full/reduced), seat testing, and metal seat requirements 

  • Additional certifications commonly found: API 607 fire-safe design, NACE MR0175 for sour service compatibility 

• Body & Trim:

  • Material options: WCB (carbon steel), CF8/CF8M stainless steel, etc.

  • Trim: Typically 316 stainless steel for internal components

  • Seats & seals: PTFE variants (R‑PTFE, PEEK) or polymer seats (Delrin, R‑TFM), graphite packing, metal seats for elevated temperatures

• Pressure & Temperature Ratings:

  • Pressure classes range from Class 150–2500 (approximately 285 psi to over 5,000 psi)

  • Temperature tolerance spans from –29 °C to 700 °C depending on material and seat choice 

• Bore Types:

  • Full-bore for minimal pressure drop and piggable pipelines

  • Reduced-bore variants for lower cost/weight in non-critical applications 

• End Connections:

  • Flanged (ASME B16.5), threaded (NPT/BSP), socket-weld, butt-weld, wafer-style options

• Fire-Safe Features:

  • Seat and body-to-seat fire integrity per API 607

  • Graphite-packed stems to seal and protect under high-temperature exposure 

• Actuation Options:

  • Manual lever or gear

  • Pneumatic spring-return or double-acting actuators

  • Electric or hydraulic actuation available for automation

Applications

• Petrochemical, oil & gas (on–off service in pipelines, storage, skids)

• Power generation

• Chemical processing (compatible with sour gas, corrosive fluids)

• High-pressure utility and industrial systems requiring dependable shutoff

Benefits

• Superior strength & safety: Thick-walled, tested shell per ASME B16.34

• Tight shutoff: Compliant with seat leakage limits in API 608

• Versatile integration: Wide range of materials, connection types, bore sizes, and actuators

• Fire-safe and sour-service ready: Ideal for critical industrial applications demanding high reliability

This type of valve is highly versatile and robust, suitable for harsh or regulated environments—especially where standards compliance is mandatory. If you have specific size, material, pressure class, or actuation needs, I can help narrow down to the right configuration.