1. Product Overview
Structural Design:
Y-Type Body: Constructed from carbon steel, ductile iron, or stainless steel, the Y-shaped housing includes an inlet, filter chamber, and outlet, forming an efficient flow-guiding space.
Filter Assembly: Made of stainless steel (304/316) woven mesh or perforated plate, supported within a filter frame. Mesh sizes range from coarse to fine filtration (18–480 mesh).
Sealing Structure: Sealing rings made of NBR or FKM rubber, hardness 60±5 Shore A (HG/T 2579), oil-resistant and temperature-resistant. Standard range: -40°C to 80°C; for high-temperature steam, FKM is recommended to ensure sealing reliability.
Drain Cap: Removable flange cover or threaded plug located at the bottom of the filter chamber for convenient online cleaning of retained impurities.
Grooved Connection Ports: Both ends use grooved interfaces compliant with GB/T 36019 “Technical Code for Fire Water Supply and Hydrant Systems.” Clamp-type connections allow fast installation without welding or flange bolts.
Operating Principle:
Fluid enters the Y-type chamber through the inlet, where it is diverted and filtered by the mesh. Impurities are deposited at the front of the filter or at the bottom of the drain chamber due to inertia or mesh blockage. Clean fluid passes through the mesh and exits to downstream equipment.
Inclined Filter Design: Gravity assists in sliding impurities toward the drain outlet, reducing surface buildup and extending effective filtration cycles.
Grooved Quick Connection: Rubber sealing rings are compressed by clamp components to form a seal, enabling rapid pipeline disassembly and maintenance.
2. Design and Manufacturing Standards
2.1 Design Specifications
Basic Standards: Complies with HG/T 21637 “Basket-Type Filters for Pipelines” (general filter structure design) or SH/T 3411 “Steel Pipeline Filters for Petrochemical Applications” (strength and process requirements).
Metal strength design follows GB/T 150 “Pressure Vessels” to ensure housing safety under working pressure.
Connection interfaces strictly follow GB/T 36019 for grooved pipe fittings regarding dimensions, tolerances, and sealing performance.
Material Selection:
Housing / Filter Mesh:
Carbon Steel (Q235B): Compliant with GB/T 700, hot-dip galvanized (zinc layer ≥85μm, GB/T 13912) or epoxy-coated. Economical for standard water/oil systems.
Ductile Iron (QT400-15): Compliant with GB/T 1348, highly vibration- and corrosion-resistant. Suitable for underground or vibrating environments.
Stainless Steel (304/316): Compliant with GB/T 1220, internally treated for corrosion resistance. Ideal for sanitary or aggressive media.
Filter Support Structure: Made of stainless steel, compliant with GB/T 4237. Deformation-resistant and abrasion-proof.
Filtration Precision Design:
Mesh size is customized based on media characteristics and downstream equipment sensitivity:
Coarse Filtration (pump/valve protection): 18–30 mesh (aperture 0.6–1.2 mm)
Medium Precision (general control): 40–100 mesh (aperture 0.15–0.4 mm)
Fine Filtration (instruments/nozzles): 100–480 mesh (aperture ≤0.15 mm)
Flow and Pressure Drop Optimization:
Y-type flow diversion reduces right-angle impact. Initial pressure drop is controlled within 0.03–0.1 MPa. (Higher flow rates or impurity buildup may increase pressure drop; filter cleaning required.)
2.2 Manufacturing Process and Quality Control
Production Process Management: Complies with GB/T 19001 Quality Management System, covering raw material inspection, machining, assembly, and final inspection.
Body machining precision follows GB/T 1804 grade m tolerance (for unspecified linear dimensions), ensuring accurate component fit.
Key Process Standards:
Welding Process: Filter frame welded to housing per GB 985.1 “Recommended Weld Groove.” Weld strength ≥ base material. Post-weld stress relief applied. Pressure-bearing welds inspected per JB/T 4730.2 “Radiographic Testing,” Grade I qualified.
Surface Treatment: Carbon steel parts hot-dip galvanized (zinc layer ≥85μm, GB/T 13912) or epoxy-coated. Stainless steel parts pickled and passivated to meet corrosion resistance requirements.
Seal Assembly: Sealing rings are evenly compressed into grooved interfaces to prevent leakage caused by uneven pressure.
Factory Inspection:
Pressure Test: Each unit undergoes hydrostatic testing at 1.5× nominal pressure (30-minute hold, no leakage), compliant with GB/T 13927 “Industrial Valve Pressure Testing.”
Filter Integrity Verification: Random inspection of filter weld strength and deformation to ensure reliable impurity interception.
Operational Flexibility Test: Drain cap opens smoothly without jamming, ensuring maintenance convenience.
3. Technical Specifications and Parameters
Nominal Diameter (DN): DN25 to DN600 mm (standard coverage for industrial and building pipeline systems)
Working Pressure Rating: PN0.6, 1.0, 1.6, 2.5 MPa (custom high-pressure options available upon request)
Applicable Temperature:
Standard media: -40°C to 80°C (NBR seal)
High-temperature steam / thermal oil: ≤250°C (requires FKM seal and heat-resistant housing materials)
Applicable Media: Fresh water, seawater, wastewater, hot/cold water, oils (crude/lubricating), air, coal gas, steam ≤250°C, and particulate/powdered fluids.
Connection Type:
Grooved connection: Both ends comply with GB/T 36019, paired with cast iron or stainless steel clamp components (bolt-tightened)
Optional flange/threaded auxiliary: Small diameters or maintenance ports may include threaded interfaces (NPT/BSPT) or mating flanges.
Filter Mesh Characteristics:
Material: Stainless steel 304/316 double-layer woven mesh or laser-perforated plate
Mesh range: 18–480 mesh (aperture 0.075–1.2 mm), customizable as needed
Installation Length and Dimensions:
Total length determined by DN size (e.g., DN100 ≈ 320 mm), ensuring sufficient space for clamp removal and drain access.
热门标签: Grooved Y-Type Strainer /
