FAQs of Stainless Steel PPR Ball Valve

1. What are the process advantages of the PPR Ball Valve?

304/316 stainless steel body. Yanshan Petrochemical PPR1120 hot-melt interface. Stainless steel polished ball core. EPDM/PTFE seals. Ergonomic handle. Plumberstar uses an integrated injection molding process. The welding strength between the PPR and stainless steel interface is greater than or equal to 2.5 MPa. The ball core polishing accuracy is Ra ≤ 0.8 μm. The opening and closing torque is ≤15N·m. This is 40% better than traditional bonding. The opening and closing service life can reach 100,000 times (the industry average is 30,000 times). It can operate normally within a temperature range of -10℃ to 95℃.

2. How about the sealing performance of the stainless steel PPR ball valve?

Bidirectional elastic seal structure is adopted, and the compression rate of the seal is accurately controlled at 35%±5%; under PN16 pressure, the leakage rate of the valve is ≤1×10 Pa·m³/s, reaching the industrial sealing standard; 100% water pressure test is carried out before delivery (1.5 times working pressure for 30 minutes), and the pressure drop is ≤0.01MPa, to eliminate quality problems such as “sweating” and “leakage”.

3. How to track the production progress of the PPR ball valve?

After the contract is signed and the advance payment is received, our foreign trade specialist will send a production schedule within 3 working days.

Visual updates: We share real photos and short videos from the factory. These may include raw material arrival checks, injection molding in progress, hydraulic testing, and finished product packing. Customers can see the production status clearly.

Issue notice: If there are delays or equipment problems, we will inform customers within 24 hours. We explain the reason, the solution, and any change in delivery time.

Raw material arrival: We provide material test reports, so customers can confirm the materials meet order requirements.

Finished product inspection: We send key test results, such as hydraulic and sealing tests. Customers can check product quality remotely.

Packing and storage: We provide packing photos with box numbers and quantities clearly marked. After customer confirmation, we arrange shipment.

4. How is the quality traceability system of the PPR ball valve?

Establish a traceability system for the whole process, and each product has a unique identity:

•  Each batch of products is assigned a unique batch number, associated with the raw material furnace number, production equipment number, inspector number, and date of manufacture.
• Customers can inquire through the official website or contact a foreign trade specialist for the following documents: spectrum test report, water pressure test curve, salt spray test data, and life test records.
• If a quality problem occurs, the issue can be quickly identified, and a solution will be provided within 24 hours.

5. Can you customize a brand logo for the PPR ball valve? 

Customizing the customer brand logo is supported. Customizing methods: Laser engraving of valve body (free, limited to 10 characters); Color printing of outer packaging (plate making fee is charged, and batch orders can be returned); MOQ of conventional models: DN20-DN50 is 1000 pieces/specification, DN63-DN110 is 500 pieces/specification; MOQ of customized logo orders is 2000 pieces, and the delivery cycle is ≤25 days.

6. What is the PPR ball valve’s sample application process?

The sample application process is convenient:

• customer sends sample requirements (material, specification, model);
• customer service confirms feasibility and quotation within 1 working day;
• customer pays sample fee + express fee (regular sample fee 50-200 yuan/piece);
• delivery within 24 hours;
• Batch order (≥2000 pieces). After placing an order, the sample fee is fully refunded. The international express delivery time limit is 3-5 days, and the logistics tracking information is available.

7. Why choose Plumberstar’s PPR ball valve?

There are three core reasons for choosing Plumberstar:

1） factory hard strength: 15 years of valve manufacturing experience, 6 automated production lines, annual production capacity of 8 million sets, stable supply of large orders, to avoid the risk of out-of-stock.

2） quality controllable: 10 full inspection procedures, factory pass rate ≥99.9%, warranty period of 2 years, far exceeding industry standards, and after-sales guarantee.

3） foreign trade service professional: 15-person foreign trade team, supports multi-language communication, provides a complete set of customs clearance documents, cross-border logistics, and timely after-sales response. It has served over 200 customers worldwide, with mouth-watering verification strength.

8. How is the Stainless steel PPR ball valve cost-effective?

The performance of Plumberstar PPR ball valves boils down to “higher upfront cost, greater long-term gains”.
Procurement cost: It’s 20%–30% more expensive than all-plastic PPR ball valves. But its service life is more than twice as long.
Maintenance cost: The seal replacement cycle is no less than 3 years. Low maintenance frequency helps save labor costs.
It resists pressure and impact well. Bursting, leakage, and other failures are rare. This avoids production losses caused by water supply interruptions and maintenance work.
Based on 10 years of household use, the average annual cost of stainless steel PPR ball valves is 40% lower than all-plastic PPR ball valves. It offers much better cost performance.

9. What manufacturing processes are used for the stainless steel body?

Nowadays, our new stainless steel process has been changed from die-casting to forging, significantly reducing both cost and mold expenses. Both the ball and valve body have been updated to this new process, which is applicable for stainless steel 304 and 316. The product density is now higher, the yield rate has increased, and the appearance is more aesthetically pleasing. With soaring and unpredictable copper prices, an increasing number of customers are switching to stainless steel ball valves.

10. Are automated testing machines used for QC of ball valves?

Our automated inspection equipment includes a projector and a coordinate measuring machine for dimensional checks, a spectrometer for material analysis, and a pressure testing machine for leakage detection. Simultaneously, we must complement these with manual inspections, such as using thread go/no-go gauges, performing drop tests on packaging, and verifying measurements with calipers, among other procedures.