Description
Buy Ball Valve Q44M PN4.0MPa Cast Steel Flanged Manual Operated
The Q44M ball valve by VALVEHU is a high-performance industrial valve engineered for use in coke oven gas systems, ammonia water, and low-pressure switching processes in chemical and refining industries. This specialized three-piece flanged valve is optimized for durability, easy maintenance, and superior sealing, even under demanding temperature and pressure conditions.
With a nominal pressure rating of PN4.0MPa, this valve ensures structural integrity under shell test pressure of 6.0MPa and reliable tightness during liquid and gas sealing tests at 4.4MPa and 0.6MPa, respectively. Designed to operate efficiently in temperatures up to ≤350°C, it is ideally suited for handling water, thermal oils, and similar media.
The internal ball is crafted from 1Cr18Ni6Ti stainless steel for corrosion resistance, while the stem uses 2Cr13 hardened steel for strength and longevity. The sealing elements are made of PPL (polyphenylene), offering enhanced wear resistance, thermal stability, and sealing life.
This industrial ball valve features a blow-out-proof stem structure and optimized PTFE-enhanced sealing packing to ensure high leak protection. Its compact body and streamlined flow path simplify installation and reduce maintenance costs. With flange ends for reliable pipeline integration and a manual lever operation, it provides engineers with dependable shut-off capabilities in continuous or high-cycle applications.
Whether you are replacing an outdated globe valve or upgrading a steam circuit, this Q44M valve is a trusted option for industrial plants requiring safe and efficient flow control. For tailored assistance or technical consultation, contact our expert team at VALVEHU in China — we’re here to support your valve solution needs.
Technical Specifications
- Model: Q44M
- Pressure Rating: PN4.0MPa
- Shell Test Pressure: 6.0MPa
- Liquid Seal Test: 4.4MPa
- Gas Seal Test: 0.6MPa
- Operating Temperature: ≤350°C
- Body Material: Cast Steel (25)
- Ball Material: Stainless Steel 1Cr18Ni6Ti
- Stem Material: Hardened Steel 2Cr13
- Sealing Material: PPL (Polyphenylene)
Main Technical Specifications
| Nominal Pressure PN (MPa) | Nominal Diameter DN (mm) | Test Pressure – Shell (MPa) | Test Pressure – Seal (Liquid) (MPa) | Test Pressure – Seal (Gas) (MPa) | Operating Temperature (°C) | Applicable Media |
|---|---|---|---|---|---|---|
| 4.0 | 2.5 | 6.0 | 4.4 | 0.6 | ≤350 | Water, Oil-Based Fluids |
Materials of Main Valve Components
| Component | Material |
|---|---|
| Body, Flange, Handle, Bonnet | 25 |
| Ball | 1Cr18Ni6Ti |
| Stem | 2Cr13 |
| Seat, Packing, Sealing Ring | PPL |
FAQ
What industries commonly use the Q44M ball valve?
It’s widely used in chemical, coke oven gas systems, water treatment, and oil circulation lines.
Can the Q44M valve handle high-temperature applications?
Yes, it operates reliably in temperatures up to 350°C with thermal-resistant PPL seals.
What makes the sealing system of this valve reliable?
It uses reinforced PPL seats and blow-out-proof stem design for superior leak prevention.
Is this valve suitable for both water and oil media?
Yes, it’s compatible with water, oil-based fluids, and low-corrosive gases.
Does the Q44M valve reduce maintenance costs?
Absolutely. Its compact body, three-piece structure, and easy disassembly make servicing fast and economical.
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