How long is your delivery time?

For normal products in 7-10 days; For bulk order, in 15-25 days. It depends.

What is the warranty time?

3 years warranty for all of our stainless steel products. Gaskets or the easy broken parts are not included due to the different application for customers.

14 years in this industry. It makes us professional. Good credit in this market. All of our machines are the assurance of our responsibility.

Do you provide free samples?

Free samples can be provided for first cooperation under sincere cooperation.

1PCS MOQ is welcome for starting cooperatoon

Can you provide material certificates?

Material certificaite, mill certificate, pressure testing certificate, roughness certificate, measure certificate, RT certificate, ...Can be available, please declare when inquiry us.

Stainless Steel Adjustable Boiler Pressure Air Relief Regulating Valve

Name: Stainless Steel Adjustable Boiler Pressure Air Relief Regulating Valve
Brand: Wenzhou Joneng Valves Co., Limited
SKU: 690974041

Zhejiang, ChinaWenzhou Joneng Valves Co., Limited

US$60.00

1-9 Pieces

US$58.00

10-49 Pieces

US$55.00

50-99 Pieces

US$50.00

100+ Pieces

Sample price:US$60.00/piece.Request sample

Product profile

Customization

Available

Size

Dn6-Dn100

Body Material

SS304, SS316L

Model NO.

JN-SV1002

Sealing Material

Silicone, EPDM, Viton, PTFE, or NBR

Qualified Certificate for Seal

FDA

MOQ

1PCS

Raw Material

Forging or Casting

Processing Machine

LG Mazak CNC Machine

Standard

SMS, ISO, as, BS, Bpe, Rjt, 3A, Idf

Acting Mode

Manual or Pneumatic or Electrical

Inner Surface Finish

Ra 0.5

External Surface Finish

Ra 0.8

Connection

Weld, Clamp, Male, Female, Union, Flange

Transport Package

Carton/Wooden Case

Specification

Dn6-Dn100

Trademark

JONENG

Origin

Wenzhou, China

HS Code

8481804090

Production Capacity

3000PCS/Year

Key features

3-Year Warranty Coverage: Comprehensive 3-year warranty on stainless steel components, excluding gaskets and fragile parts.

Food-Grade Sanitary Design: FDA and 3A compliant SS304/316 construction with smooth surfaces for hygienic food and pharma use.

Automatic Pressure Control: Automatically releases trapped air and excess pressure to prevent overpressure damage and vacuum formation.

Low MOQ for Trials: Accepts orders starting from just 1 piece, ideal for testing and small-scale project requirements.

Fast Delivery Service: Standard products delivered in 7-10 days; bulk orders in 15-25 days for urgent project needs.

Versatile Connection Options: Supports Weld, Clamp, Male, Female, Union, and Flange connections for easy pipeline integration.

High Precision Manufacturing: Produced with LG Mazak CNC machines ensuring Ra 0.5 inner and Ra 0.8 outer surface finishes.

Global Certification Standards: Certified by ISO 9001, CE, SGS, PED, and FDA, meeting international SMS, AS, BS, and BPE standards.

Company profile

High Repeat Buyers ChoiceIn-stock CapacityQuality AssuranceR&D Capabilities

Wenzhou Joneng Valves Co., Limited

Zhejiang, China

Business Type: Manufacturer/Factory CertifiedCustomization Options: Customization from Samples, Customization from Designs, etc. CertifiedExport Year: 9 Years CertifiedNearest Port: Ningbo Port, Shanghai PortAverage Response Time: ≤0.92h CertifiedTerms of Payment: LC, T/T, D/P, etc.

AI-Powered supplier vetting

SummaryThe supplier is an export-oriented manufacturer with stated production capacity for valves, pipe fittings, unions, and manhole covers, supported by two production lines, CNC turning equipment, and six to ten quality-control staff. It holds ISO 9001:2015 and ISO 14001:2015 certifications, and reports documented procedures for corrective and preventive actions and customer complaints. The supplier offers broad customization from samples and designs, but reports no new products in the past year, no ODM service, no SDK, and only one year of R&D-engineer experience. It has inventory capability and contracts with associated subcontractors, but no overseas warehouse, showroom, agent, or branch. Financial information is limited to year references, so financial credibility cannot be determined. No customer cases are provided.

Supplier typeThe supplier presents itself as a manufacturing company producing manhole covers, butterfly valves, pipe fittings, unions, and diaphragm valves. It operates two production lines, uses a CNC lathe, has inventory capability, and holds valid manufacturing contracts with associated subcontractors; its exports account for 51%–70% of total sales and it has nine years of export experience.

CertificationsThe supplier reports ISO 9001:2015 and ISO 14001:2015 certificates. These certifications cover quality and environmental management systems, and the supplier also reports a sustainable-development management system certification listing the same standards.

After-Sales capabilityThe supplier has documented and followed procedures for corrective and preventive actions and for handling customer complaints. It also reports in-stock service capability, but has no overseas warehouse, overseas showroom, agent, or branch, and lists zero countries with overseas services; therefore, documented support exists while overseas service coverage is limited.

R&D capabilityThe supplier reports no new products during the past year, no ODM service, no available SDK, and total R&D-engineer experience of one year. These statements indicate limited demonstrated innovation resources and output in the provided evidence.

Production capacityThe supplier reports product-specific annual capacities of 12,000 manhole covers, 50,000 butterfly valves, 150,000 pipe fittings, 150,000 unions, and 15,000 diaphragm valves, supported by two production lines, CNC turning equipment, six to ten quality-control staff, inventory capability, and valid subcontractor contracts. However, finished products are checked by packing staff, which describes the inspection arrangement but does not by itself establish a deficiency.

Customization capabilityThe supplier explicitly offers customization from samples, designs, full customization, flexible customization, and minor customization. This capability is stated consistently in both the R&D/design-service information and the production information.

Product Q&A

Q:Are you a trading company or a factory?

We are a manufacturer factory and we also have our own exporting license.

Q:What certifications do you have?

Yes, ISO, FDA, LFGB, CE, PED certificate. We also have some patents in design.

Q:How do you control the quality?

In quality control, the most important is to avoid material mixing. In our factory, 3 spectro PMI machines are used in raw material warehouse, production plant, dispatch plant. Pressure inspecting machine, PMI machines, RA roughness spector, hardness testing machine...All machines help in inspection. 2 staff inspect during production in different sections 5 staff inspect the finished productions to avoid shortage, poor quality, mixing chemical...

Q:How many factories do you have?

Under the esteemed Joneng enterprise, we proudly operate three specialized manufacturing facilities. Jiayuan excels in producing elbow, tee, and reducer fittings in both sanitary and schedule grades; Lingdong focuses on precision-engineered ferrules, unions, sight glasses, and butterfly valves using advanced CNC technology; while Ezo specializes in designing high-quality manhole covers and small tanks to meet diverse industrial needs.

Q:If there is any quality problem, how do you solve it?

We are very proud that we never make one customer leave us. We are not 100% perfect, there is some quality problem. Normally replacement, or compensation, or resend goods to customers as per the condition. To be discussed as per condition.