1. Are there essential differences in the design of safety groups?

Boiler parts mainly deal with higher pressure, usually about 3–10 bar, and use seals that can handle high heat. Water heater parts work at lower pressure, around 1–3 bar, and focus more on accurate pressure control. Pressure vessel parts need stronger materials to resist long-term pressure and fatigue.

From jeremy renove

2. Can you customize the safety group valve according to our drawing?

Plumberstar can professionally customize safety group valves based on your drawings. We have a skilled R&D and design team for plumbing valves. We have many years of experience in making combined products. These include safety valves, pressure-reducing valves, check valves, and pressure gauges.

We can understand all technical requirements from your drawings. This includes structure, size, interface, pressure, flow, material, sealing, and appearance. We follow your drawings strictly for development, mold making, sample testing, and mass production. When customizing by drawing, we first do a full technical check. We review your 2D or 3D files. We check structure, size, pressure, material, and production process. We make sure the product meets your drawing and works safely and stably. If some details can be improved, our engineers will give professional suggestions. We won’t change your core functions and appearance. We help improve performance, lower cost, or fit mass production better.

After we confirm the drawings and plan, we make samples for you. You can check size, pressure, sealing, and installation. We only start mass production after you confirm the samples are okay. This makes sure the final products match your drawings completely. Whether you need standard safety group valves for Europe, North America, the Middle East, or Australia, or non-standard models for special working conditions, installation, or pressure, we can produce them exactly to your drawings.

3. What is the seal’s material of the safety group?

Plumberstar Safety Group valves use carefully selected sealing materials. We choose them based on drinking water safety, high temperature resistance, anti-aging, and long-term sealing. All are eco-friendly elastic materials. They meet international plumbing valve standards.

Our standard seal is EPDM. It’s the most common and stable seal in Europe, North America, and other major markets. EPDM works well in all weather. It resists aging, high temperature, and water pressure. It can work stably for a long time. This includes hot water systems, heating systems, and the home water supply. It won’t harden, crack, or lose elasticity. Temperature changes or long use won’t damage it. It’s safe for drinking water contact. It passes relevant hygiene certifications. It’s good for places with strict water quality requirements.

For special working conditions or custom needs, we can use NBR or Silicone seals. We choose based on your actual use environment.

4. Will the price be adjusted according to the fluctuations of safety group materials?

After the first order is confirmed, we will sign a price guarantee agreement. The agreement usually lasts 6 months, and long-term customers can extend it to 12 months. During this time, if you place more orders and the raw material price changes only slightly, the product price will remain the same. If the price of the raw material increases significantly, we will give you at least 15 days’ notice and discuss a new price or order plan.

5. Do you support third-party inspection of the safety group valve?

We accept on-site factory audits from major global third-party labs. SGS, BV, and Intertek can all inspect our safety combo valves freely. We add all inspection requirements to our production schedules ahead of time. Our workshop sets aside half to one full working day for these third-party visits. Auditors get enough time to check finished products, testing equipment, and batch records without hurry.

Auditors can watch full pressure tests run on every production batch. Test pressure follows product standards or your requests. We usually hold pressure at 1.5 times the normal working level for 30 to 60 seconds. We also sample test the safety valve opening pressure at the same time. Opening pressure can only vary ±3% from the set value.

All pressure test records, size check forms, material certificates, and third-party audit papers are filed together. You can look up all full inspection files with your order number or batch code.

6. Is the pressure gauge range in the kit customizable?

Plumberstar Safety Group valve set lets you customize the pressure gauge range. We adjust it easily based on your needs. This includes water supply pressure, heating system pressure, local working conditions, and your specific requirements. It makes the valve fit local use better. In real use, we can change the gauge range as you want. Common ranges are 0-4 bar, 0-6 bar, 0-10 bar, 0-16 bar. You can also choose psi ranges. All are free to select. We also support dual scales on one dial: bar and psi. It’s easy for people with different habits to read.

7. Can we visit Plumberstar factory?

We are a professional brass valve factory. Our factory sits in Taizhou, Zhejiang. The high-speed train takes 3 hours from Shanghai Hongqiao Station. The ride from Ningbo takes less than 1 hour. We welcome all overseas partners, local distributors, big construction buyers, and OEM brand customers to come tour our plant.

Please send over your travel plan three working days early. We will arrange a steady sales staff and an experienced technical engineer to walk you through the whole factory.

You can visit all seven separate production areas. These spots include brass raw material storage, hot forging workshop, CNC precision processing zone, automatic assembly lines, hydraulic test area, finished goods storage, and a third-party certified test lab. You may watch every production step live. Watch brass blank shaping, inner pressure part fitting, leak tests on finished valves, and hydraulic burst damage tests.

Share four simple details with us ahead of your trip. Tell us how many people are coming, your exact arrival day and time, and if you need an interpreter. We can run live pressure tests on sample valves while you visit. We also set aside private meeting rooms for technical discussions and order talks. We hand out free guides for local three to five-star hotels. We also make clear pick-up and drop-off plans for all foreign visitors.