
PQ41F Blowdown Ball Valve
• Adopts new type sealing material with high temperature & corrosion resistance
• Stable performance, reliable sealing and low friction
• Light operation, wear-resistant and long service life
• Supports installation in any direction for easy assembly
• Specially designed for industrial sewage discharge pipeline systems
Gaoshan Valve PQ41F Blowdown Ball Valve
Professional Ball Valve with New Sealing Material for Sewage & Blowdown Systems
Product Brief Highlights
- New Advanced Sealing Material: Specially developed sealing components designed exclusively for blowdown service pipelines.
- Stable & Reliable Operation: Consistent performance and tight sealing under long-term working conditions.
- Low Friction & Easy Operation: Optimized internal structure ensures smooth, labor-saving opening and closing.
- Multi-Resistance Performance: Excellent resistance to high temperature, abrasion and corrosion.
- Durable Structure: High-quality accessories extend the overall service life greatly.
- Flexible Installation: Simple assembly and supports multi-directional installation on pipelines.
1. Product Overview
The PQ41F blowdown ball valve adopts a new type of high-performance sealing material, which is professionally manufactured for various sewage and industrial blowdown systems. This valve features stable operation and dependable sealing performance. With low friction coefficient, it can be switched on and off effortlessly. In addition, it has outstanding advantages of high temperature resistance, wear resistance and corrosion resistance, and boasts a long service life, perfectly adapting to complex and harsh working environments of blowdown pipelines.
2. Key Features
- Premium Sealing Ring: The high-quality sealing ring is made of special formula material, with superior high temperature resistance and anti-corrosion capability.
- Universal Installation: Compact and reasonable structure enables easy installation, and the valve can be mounted in any direction on pipelines without affecting performance.
- Light Switch Action: Minimized internal friction ensures flexible and smooth operation even after frequent use.
- Strong Environmental Adaptability: Integrated wear-proof, high-temperature resistant and anti-corrosion properties for industrial blowdown applications.
- Long Service Lifespan: Strict production process and reliable raw materials reduce maintenance frequency and extend service cycle.
3. Technical Specifications
| Parameter | Specification |
|---|---|
| Model | PQ41F |
| Nominal Diameter | DN15 ~ DN150 |
| Nominal Pressure | PN16 / PN25 / PN40 |
| Working Temperature | -10℃ ~ 200℃ |
| Applicable Media | Sewage, Waste Water, Water, Oil |
| Connection Type | Flanged |
| Operation Mode | Manual |
4. Materials of Construction
| Part Name | Material |
|---|---|
| Valve Body | Ductile Iron / Cast Steel |
| Ball & Stem | Stainless Steel |
| Sealing Ring | New High-temperature Resistant Composite Material |
| Stem Packing | PTFE |
| Handle | Carbon Steel |
5. Structure Drawing & Dimensions

PQ41F Blowdown Ball Valve External Structure & Dimension Diagram
| DN(mm) | L(mm) | D(mm) | D1(mm) | D2(mm) | n-φd | H(mm) | b(mm) |
|---|---|---|---|---|---|---|---|
| 15 | 130 | 95 | 65 | 45 | 4-14 | 85 | 14 |
| 20 | 150 | 105 | 75 | 55 | 4-14 | 95 | 16 |
| 25 | 160 | 115 | 85 | 65 | 4-14 | 103 | 16 |
| 32 | 180 | 135 | 100 | 78 | 4-18 | 105 | 18 |
| 40 | 200 | 145 | 110 | 85 | 4-18 | 120 | 18 |
| 50 | 230 | 160 | 125 | 100 | 4-18 | 195 | 20 |
| 65 | 290 | 180 | 145 | 120 | 4-18 | 195 | 20 |
| 80 | 310 | 195 | 160 | 135 | 8-18 | 215 | 22 |
| 100 | 350 | 215 | 180 | 155 | 8-18 | 253 | 24 |
| 125 | 400 | 245 | 210 | 180 | 8-18 | 285 | 26 |
| 150 | 480 | 280 | 240 | 210 | 8-22 | 320 | 28 |
6. Installation & Maintenance Guidelines
- Clean the pipeline thoroughly before installation to prevent hard impurities from scratching the sealing surface.
- This valve supports installation in any direction, please follow the flow direction arrow marked on the valve body.
- Do not use the valve handle as a lifting point to avoid structural damage.
- Tighten flange bolts evenly in diagonal sequence after installation to ensure uniform sealing pressure.
- Regularly check sealing performance and operating flexibility during daily operation.
- Replace aged or worn sealing parts timely to maintain stable long-term operation.
7. Typical Applications
PQ41F blowdown ball valves are widely applied in various pipeline systems for sewage discharge and industrial blowdown service:
- Municipal sewage treatment and discharge projects
- Industrial factory wastewater discharge pipelines
- Boiler blowdown and auxiliary pipeline systems
- Chemical, textile and food processing industries
- Building drainage and fluid supporting pipelines
Request a Quote Today
Gaoshan Valve provides high-quality PQ41F blowdown ball valves with reliable performance for municipal and industrial blowdown systems. We offer complete specifications, stable quality and competitive prices to meet your project demands.
Email: sales@gaoshanvalves.com | Tell us your required size, quantity and delivery requirements!