High-Flow ASME Code Filter Vessels (Compatible With 303/383 Series)

In critical industrial machinery, maintaining fluid cleanliness is not negotiable. Ayater Filtration presents our premium line of Simplex L-Ported Filter Assemblies, designed to fully replicate the dimensional and functional performance of the industry-standard 303 and 383 series. These vessels are specifically manufactured for high-flow, low-pressure to medium-pressure applications commonly found in power generation turbines, steel mill lubrication systems, and pulp and paper hydraulic units.

Unlike standard off-the-shelf housings, Ayater's assemblies are constructed in strict accordance with ASME Boiler and Pressure Vessel Code Section VIII, Division 1. This ensures that safety and structural integrity are never compromised, even under significant cyclic loading.

Ayater Filtration is a premier global manufacturer of industrial filtration solutions, headquartered in the "Filtration City of China," Xinxiang. With over 15 years of dedication to fluid purity, we specialize in producing high-quality alternatives to major international filter brands. Our facility is equipped with state-of-the-art testing laboratories where every batch of filter media is tested for Beta Stability and Dirt Holding Capacity according to ISO 16889 standards.

We do not just sell filters; we provide fluid management solutions. Ayater's engineering team analyzes your specific hydraulic parameters to recommend the most cost-effective, high-efficiency replacement assemblies. By choosing Ayater, you benefit from factory-direct pricing, significantly shorter lead times compared to OEM manufacturers, and a product that meets or exceeds the original performance specifications.

Maximum Working Pressure: Class 150 (260 psig / 18 bar); Class 300 (675 psig / 46.5 bar) at 200°F (93°C)

Temperature Range: -20°F to 200°F (-29°C to 93°C)

Filtration Precision: 3μm coalescing rating (liquid and solid particle removal)

Flow Rate Capacity: Up to 300 GPM (1135 LPM)

Port Sizes: 3", 4" ANSI flange connections (custom configurations available)

Housing Materials: Carbon steel (zinc primer finish) or 316 stainless steel

Seal Material: Buna-N (standard); Viton® / EPDM (optional)

Duplex Configuration: Dual housings with 316 stainless steel transfer valve (ball and stem)

Special Features: Built-in reservoir, Posi-Sealoc II quick-opening cover, pressure warning device (PWD)

Certifications: ASME BPVC Section VIII, Division 1; optional 'U' stamp

Key Features & Ayater Advantages

Continuous Operation: Duplex design with transfer valve allows element replacement without system shutdown-reducing downtime by 100% compared to simplex filters, a testament to Ayater's focus on operational efficiency.

Patented Quick-Opening Cover: Posi-Sealoc II technology simplifies maintenance, cutting element change time from 30 minutes to 5 minutes-developed based on Ayater's analysis of client maintenance pain points.

Triple-Phase Separation: Coalescing media removes solids (3μm+), liquids, and aerosols in a single pass, eliminating the need for multiple filtration stages and reducing system complexity.

Global Compliance: ASME certification and optional 'U' stamp ensure adherence to international safety standards, reflecting Ayater's commitment to quality across 50+ global markets.

Durable Construction: 316 stainless steel valve components and corrosion-resistant housings withstand harsh chemicals and extreme temperatures, backed by Ayater's 5-year product warranty.