Hygienic Stainless Steel Hinged Hatch Manhole Cover with Sight Glass

• Customization: Available
• After-sales Service: 24 Hours Online
• Warranty: 13 Months
• Model NO.: SYMC-4
• Connection: Welding
• Shape: Equal
• Head Code: Equal
• Wall Thickness: 3mm
• Material: Stainless Steel
• Technics: Casting
• Certification: DIN, 3A/ISO9001
• Color: Silver
• Type: Manhole Cover
• Product Name: Sanitary Manhole Cover
• Body Material: Stainless Steel 304/316L
• Usage: Tank Vessel
• Customized Support: OEM, ODM,
• Transport Package: Carton Box
• Specification: DN150-DN800
• Trademark: Sanying
• Origin: Zhejiang, China
• HS Code: 7307290000
• Production Capacity: 5000/Month
• Package Size: 26.00cm * 26.00cm * 20.00cm
• Package Gross Weight: 7.000kg

Product Description

 

Pressure type manhole cover with sight glass

Material	AISI304/316L
Maximum pressure	2-5bar
Surface	Ra0.8μm-0.5μm
Size	300,350,400,450,500,600,800
Height	100/120/150

Application

Customer feedback

had the pleasure of working with Miss Daisy Gu, and l can confidently say that she is exceptionallycooperative and helpful. Throughout our interactions, she consistently demonstrated a high level ofprofessionalism and dedication. Miss Daisy Gu was always prompt in her responses, addressing all mygueries and concerns with great patience and clarity. The quality of the material provided was alsooutstanding, it met all my expectations and reauirements, reflectina the excellent standards of thecompany. The products were well-packaged and delivered on time, ensuring that there were no issuesupon arrival. Overall, l am extremely satisfied with the service and support provided by Miss Daisy Gu. Helassistance made the entire process smooth and hassle-free. l highly recommend her and look forward tofuture collaborations.

 

just what I needed and fast delivery
★★★★★ Full star Review!!!

 

★★★★★ Full star Review!!!

 

Company Profile

Packaging & Shipping

FAQ

1. Are you a trading company or factory? 
We are a manufacturer factory and we also have our own exporting license. 

2. Do you have certificate? 
Yes, ISO, FDA,SGS certificate. We also have some patents in design(Such as 3A Certificate which is similar as BPE/ASME certificate). 

3.Do you offer customization?
Yes. We provide tailored solutions including:  
- Custom dimensions (e.g., flange face-to-face lengths as per DIN/ISO).  
- Material upgrades (e.g., Hastelloy body for highly corrosive media).  
- Laser-marked logos/batch numbers for traceability

4.Why choose your valves over competitors?
Our valves are specifically designed for pharmaceutical applications with zero dead space(per EHEDG guidelines), FDA-compliant EPDM membranes, and full traceability from raw material to delivery. 90% of clients report reduced contamination risks post-installation

5.How do you ensure zero dead legs in valve design?  
Our patented "Radius-Seal" diaphragm technology reduces crevices by 80% compared to traditional designs. View our 3D sectional drawings for details

6. How do you control the quality? 
In quality control, the most important is to avoid material mixing. 
In our factory, 3 spectro PMI and MTC machines are used in raw material warehouse, production plant, dispatch plant. 
Pressure inspecting machine, PMI and MT 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...

7.Can you provide material traceability documentation?
Yes. Each valve comes with a Material Traceability Report (MTR)/Material Testing Certificate(MTC) including melt batch numbers and heat treatment records

8. 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 online 24 hours (Response rate >95%)and then the clients can contact with us full time for sloving well with some quality problem. 

9. How long is your delivery time? 
For normal products in 7-10 days; For bulk order, in 15-25 days. It depends. 

10. Warranty time? 
13 monthes warranty for all of our stainless steel products. Gaskets or the easy broken/wear parts are not included due to the different application for customers.