Specification

TIANYU Gas Pressure Differential Fabricated Basket Strainer

I. Product Overview

TIANYU Gas Pressure Differential Fabricated Basket Strainer is a high-performance filtration device integrating impurity removal and pressure monitoring functions. As a fabricated (assembled) type strainer, it is mainly composed of a shell, middle cover, filter basket, differential pressure gauge, needle valve, fasteners, and drain plug. Designed for gas and fluid systems, it efficiently removes solid impurities from natural gas, liquefied petroleum gas (LPG), artificial gas, water, oil, and steam, ensuring stable operation of downstream precision equipment such as valves, meters, and compressors. With reliable material selection and precise manufacturing, it serves as a core component in industrial fluid and gas transmission systems, balancing filtration efficiency and operational safety.

II. Key Attribute Parameters

Size Range: Nominal diameter (DN) covers DN15 to DN1000, adapting to both small-caliber gas distribution pipelines (e.g., urban gas branch lines) and large industrial main pipelines (e.g., refinery fuel gas mains).
Pressure Class: 150lb to 900lb, with two main pressure grades: 10K (maximum inlet pressure 15kgf/cm²) and 20K (maximum inlet pressure 30kgf/cm²), meeting medium and high-pressure system requirements.
Applicable Media: Gas (natural gas, LPG, artificial gas), water, oil, and steam, with strong compatibility for diverse industrial fluids.
Temperature Range: 220℃ to 350℃, suitable for high-temperature scenarios such as steam 伴热 pipelines and industrial furnace fuel gas systems.
Connection Mode: 10K/20K RF flanged ends, ensuring tight alignment with pipeline flanges. This design simplifies installation and maintenance, conforming to industrial flange connection standards.
Material Specifications:
- Body & Cover: Fabricated from cast iron, WCB (carbon steel), or stainless steel (S.S.). Cast iron/WCB is cost-effective for general gas systems; stainless steel (e.g., 304, 316) offers enhanced corrosion resistance for humid or mildly corrosive gas environments.
- Filter Basket: 304 stainless steel porous sieve, featuring high tensile strength and corrosion resistance. The mesh size is selectable to match impurity size requirements, ensuring effective interception without excessive pressure loss.
- Sealing Gasket: Asbestos sheet, providing reliable sealing under high temperature and pressure, preventing gas or fluid leakage.
Testing Standards: Complies with CE, SGS, and GMP certifications. Hydrostatic testing is performed at 15kgf/cm² (for 10K) and 30kgf/cm² (for 20K) to verify pressure resistance and leak tightness.

Product Overview

III. Feature Description

Integrated Pressure Monitoring: Equipped with a differential pressure gauge and needle valve, real-time monitoring of pressure differences across the filter basket. When impurities accumulate, the pressure difference increases, prompting timely cleaning—avoiding blind maintenance and reducing the risk of system blockage or pressure drop.
Efficient Filtration with Full-Area Design: The filter basket adopts a full filtration area (larger than the pipeline cross-section), ensuring sufficient contact between gas/fluid and the sieve. This design enhances impurity interception efficiency (≥95% for particles larger than the mesh size) while minimizing pressure loss (≤5% of system pressure), maintaining stable flow rates.
Easy Maintenance: The middle cover features a quick-opening structure; removing the cover allows direct access to the filter basket (equipped with a lifting handle). Impurities trapped in the basket can be removed or cleaned without disassembling the entire pipeline, reducing maintenance time by 40-60% compared to traditional strainers.
Fabricated Structure Advantages: Unlike cast strainers, the fabricated design (assembled via welding pre-cut steel plates/pipes) allows for larger sizes (up to DN1000) and better structural uniformity. This is critical for high-pressure gas pipelines, where casting defects (e.g., pores) could lead to gas leakage or structural failure.

IV. Manufacturing Process

TIANYU Gas Pressure Differential Fabricated Basket Strainer adopts precision fabricated manufacturing, ensuring reliability and consistency:

Material Preparation: Steel plates/pipes (WCB, stainless steel) or cast iron are cut to precise dimensions using CNC cutting machines, ensuring component compatibility during assembly.
Structural Welding: The shell, flange ends, and cover frame are welded using TIG (for stainless steel) or MIG (for carbon steel) welding. Welds are polished to a smooth finish to reduce gas/fluid turbulence and prevent corrosion.
Filter Basket Fabrication: 304 stainless steel sheets are perforated into porous sieves with uniform mesh sizes (customized by impurity size). The sieve is formed into a basket shape and welded to a support frame with a lifting handle for easy extraction.
Pressure Monitoring Assembly: The differential pressure gauge and needle valve are calibrated and installed on the shell, with pressure ports connected to the upstream and downstream of the filter basket to ensure accurate pressure difference measurement.
Quality Inspection: Each strainer undergoes hydrostatic testing (15kgf/cm² for 10K, 30kgf/cm² for 20K) to check for leaks. The filter basket is tested for strength to ensure it does not deform under rated pressure, and the differential pressure gauge is verified for accuracy.

Valve Details

V. Product Advantages

Proactive Equipment Protection: The differential pressure gauge enables predictive maintenance, alerting operators to clean the filter basket before blockages cause pressure drops or equipment damage. This extends the service life of downstream compressors, valves, and meters by 30-50%.
High Filtration Efficiency: The full-area filter basket and 304 stainless steel sieve effectively intercept rust, dust, and solid particles in gas/fluid, reducing equipment wear and unplanned downtime. For gas systems, it ensures gas purity, preventing nozzle clogging in burners or regulators.
Cost-Effective Operation: The quick-opening cover and reusable filter basket lower maintenance costs (labor and replacement parts) by 20-30% annually. Low pressure loss reduces energy consumption of pumps or compressors, saving 3-8% in long-term operational costs.
Wide Adaptability: With diverse materials (cast iron, WCB, stainless steel) and pressure grades, it adapts to harsh environments—from humid LPG pipelines to high-temperature steam systems—without compromising performance.

Application

VI. Product Applications

Gas Transmission & Distribution: In urban natural gas networks, LPG storage and transportation systems, and artificial gas pipelines, it filters impurities to protect pressure regulators, flow meters, and domestic/commercial burners, ensuring safe and efficient gas supply.
Petrochemical Industry: Used in refinery fuel gas lines, chemical synthesis gas systems, and oil pipelines to remove catalyst particles, coke residues, and rust, protecting compressors and reaction vessel inlet valves.
Power Sector: In thermal power plant gas fuel systems and steam pipelines, it intercepts scale and metal debris, preventing turbine nozzle blockages and maintaining heat exchange efficiency in boilers.
Industrial Furnaces & Kilns: Suitable for gas-fired furnaces (e.g., steel, ceramics) to filter fuel gas, ensuring stable combustion and extending burner service life.