Product Overview

Newway DN20 Thin Type Flanged V-Type Stainless Steel Ball Valve

I. Technical Overview

Newway DN20 thin type flanged V-type stainless steel ball valve is specially designed for industrial pipelines with limited space. Made of 304 stainless steel, with a diameter of DN20 (3/4″) and nominal pressure PN16 (1.6MPa), it operates at -20℃~232℃, suitable for on/off and regulation of water, gas, and weak acidic media. The thin flanged structure shortens the installation length by 30% compared to traditional valves. The combination of V-type ball core and PTFE seal achieves bubble-tight sealing, widely used in chemical, water treatment, food & pharmaceutical, and building water supply/drainage systems to meet lightweight and high-corrosion resistance requirements.

II. Core Product Features

(A) Compact Thin Structure Design

Space Optimization: The valve body thickness is only 60% of traditional flanged ball valves, saving 35% installation space, ideal for 夹层 pipelines (sandwich pipelines) and compact equipment;

Low Flow Resistance: Full bore design with resistance coefficient ≤0.8, improving media flow efficiency by 20%, saving ~1,200kWh annual pumping energy;

Quick Operation: 90° rotation for full open/close, manual operation torque ≤50N·m, suitable for emergency shut-off.

(B) Advantages of V-Type Sealing System

(C) Corrosion-Resistant Material System

The 304 stainless steel body undergoes solution treatment with ASTM No.7+ grain size, lasting over 8 years in weak acidic media (pH 4-10). The PTFE seat with carbon fiber reinforcement improves creep resistance by 50%, preventing hardening and deformation in long-term use.

III. Key Technical Attributes

IV. Manufacturing Processes & QC

(A) Precision Forging & Machining

Body Forming:

4000-ton friction press forging of 304 stainless steel billet, forging ratio ≥4:1, ultrasonic testing (UT) for internal defects (sensitivity ≥Φ1.2mm);

Thin flange machined by CNC lathe with parallelism error ≤0.05mm for sealing surface precision.

Core Processing:

V-shape cut by 5-axis CNC milling, angle error ≤±0.5°, surface roughness Ra≤0.8μm;

Ball and seat paired grinding with fit gap ≤0.01mm for zero leakage.

Surface Treatment:

Body passivated (ASTM A967), 1000-hour salt spray test without corrosion;

Electropolishing (Ra≤0.4μm) for food-grade applications, compliant with FDA 21 CFR 177.2600.

(B) End-to-End Quality Control

Pressure Test: 1.5x nominal pressure (2.4MPa) hydrostatic test for 30 minutes without leakage;

Air Tightness Test: 1.1x pressure (1.76MPa) helium detection, leakage rate ≤5×10⁻⁹Pa·m³/s;

Life Test: Sampled for 50,000 cycles with ≥95% sealing retention (industry standard: 30,000 cycles).

Valve Details

VI. Newway Customization Advantages

Newway provides end-to-end customization based on 20 years of valve manufacturing experience and Zhejiang intelligent production base:

Technical Customization: Non-standard flanges (DIN/GOST/JIS), high-temperature (350℃)/low-temperature (-46℃) types, explosion-proof handles (ATEX certification), with 3D modeling and fluid simulation;

Flexible Delivery: 31-day standard lead time, 15-day expedited for small batches (MOQ 100 units), 24-hour emergency channel;

Global Service Network: 12-month warranty, 24/7 response from 3 major service centers (APAC/Europe/NA), 48-hour airfreight for spare parts, with installation training and digital manuals.

Application

V. Application Scenarios

Chemical Pipeline: On/off control for weak acidic media (e.g., 10% citric acid), 304 stainless steel ensures ≥5-year leak-free service;

Building Water Systems: Flow regulation in high-rise buildings, thin design saves ceiling space, PN16 suits municipal water supply;

Food & Beverage: Juice/drinking water pipeline control, electropolished body meets 3A sanitary standards, preventing media contamination;

Gas Systems: Safety shut-off for natural gas inlet pipelines, V-type seal prevents (trace leakage), ensuring safety.