Sanitary Weld Check Valve
KINGMAN supplies sanitary welded check valve. This one‑way sanitary valve adopts butt‑weld connection. Body and internal components are CNC precision‑turned from 304 / 316L stainless steel to meet international standards.
It enables one‑direction medium flow and effectively blocks reverse flow to protect pipeline systems from back‑flow damage. Dead‑leg‑free flow path supports CIP cleaning. Compliant with 3A, SMS, DIN, ASME BPE standards, the products are exported worldwide, widely used in food, pharmaceutical and liquid‑cooled data‑center fluid systems.
Specifications
| Parameter | Value |
|---|---|
| Product Type | Sanitary Check Valve |
| Size Range | DN15‑DN100 (approx. 1/2"‑8") |
| Body & Disc Material | 304 / 316L stainless steel (AL6XN, Hastelloy, Alloy 22 available on request) |
| Seal Material | EPDM (standard) /Silicon (optional — please confirm) |
| Working Temperature | 130 °C |
| Max. Working Pressure | 1000 kPa (10 Bar) for DN15‑DN100; 800 kPa (8 Bar) for DN125‑DN150 |
| Min. Working Pressure | Full vacuum (with EPDM seal) |
| Connection Standard | 3A / SMS / DIN / ISO / RJT / IDF / ASME BPE |
| Connection Type | Tri‑Clamp / Weld / Threaded / Flange (please confirm) |
| Operation Type | Manual handle / Pneumatic actuator |
| Certification | ISO 9001, 3A,CE,EAC,health wading license |
Dimensions
DIN Standard
| Material Code | Size | B2 | D | A |
|---|---|---|---|---|
| CV01DINWWEP04015 | DN15 | 87.0 | 18.0 | 75.0 |
| CV01DINWWEP04020 | DN20 | 87.0 | 22.0 | 75.0 |
| CV01DINWWEP04025 | DN25 | 87.0 | 28.0 | 75.0 |
| CV01DINWWEP04032 | DN32 | 87.0 | 34.0 | 75.0 |
| CV01DINWWEP04040 | DN40 | 87.0 | 40.0 | 75.0 |
| CV01DINWWEP04050 | DN50 | 100.0 | 52.0 | 80.0 |
| CV01DINWWEP04065 | DN65 | 130.0 | 70.0 | 110.0 |
| CV01DINWWEP04080 | DN80 | 155.0 | 85.0 | 115.0 |
| CV01DINWWEP04100 | DN100 | 165.0 | 104.0 | 120.0 |
SMS Standard
| Material Code | Size | B2 | D | A |
|---|---|---|---|---|
| CV01SMSWWEP04019 | 19 | 87.0 | 19.1 | 75.0 |
| CV01SMSWWEP04025 | 25 | 87.0 | 25.4 | 75.0 |
| CV01SMSWWEP04032 | 32 | 87.0 | 31.8 | 75.0 |
| CV01SMSWWEP04038 | 38 | 87.0 | 38.1 | 75.0 |
| CV01SMSWWEP04051 | 51 | 100.0 | 50.8 | 80.0 |
| CV01SMSWWEP04063 | 63 | 115.0 | 63.5 | 100.0 |
| CV01SMSWWEP04076 | 76 | 130.0 | 76.2 | 115.0 |
| CV01SMSWWEP04089 | 89 | 155.0 | 89.0 | 115.0 |
| CV01SMSWWEP04102 | 102 | 165.0 | 101.6 | 120.0 |
ISO Standard
| Material Code | Size | B2 | D | A |
|---|---|---|---|---|
| CV01ISOWWEP04019 | 19 | 87.0 | 19.0 | 75.0 |
| CV01ISOWWEP04025 | 25 | 87.0 | 25.4 | 75.0 |
| CV01ISOWWEP04032 | 32 | 87.0 | 32.0 | 75.0 |
| CV01ISOWWEP04038 | 38 | 87.0 | 38.1 | 75.0 |
| CV01ISOWWEP04045 | 45 | 100.0 | 45.0 | 75.0 |
| CV01ISOWWEP04051 | 51 | 100.0 | 50.8 | 80.0 |
| CV01ISOWWEP04057 | 57 | 100.0 | 57.0 | 80.0 |
| CV01ISOWWEP04063 | 63 | 115.0 | 63.5 | 100.0 |
| CV01ISOWWEP04076 | 76 | 130.0 | 76.2 | 115.0 |
| CV01ISOWWEP04089 | 89 | 155.0 | 88.9 | 115.0 |
| CV01ISOWWEP04102 | 102 | 165.0 | 101.6 | 120.0 |
| CV01ISOWWEP04108 | 108 | 165.0 | 108.0 | 120.0 |
Features
- Integral butt-weld structure eliminates loose connectors and gasket leakage points, providing high structural rigidity and stable sealing performance for long-term sanitary pipeline operation.
- Adopts high-precision CNC one-piece machining with uniform internal tolerance, ensuring stable opening and closing sensitivity and consistent anti-backflow effect under long-cycle operation.
- Optimized full-bore smooth flow path without dead corners effectively avoids medium residue, fully adapts to CIP online cleaning, and meets strict hygienic production requirements.
- Pure pressure-difference automatic operation requires no external power or manual control, realizing fast and sensitive one-way flow interception to prevent pipeline backflow and cross-contamination.
- Equipped with multiple optional sealing materials to adapt to different temperatures, media and vacuum environments, ensuring reliable sealing in diverse sanitary process conditions.
- Manufactured in accordance with international sanitary standards, with stable quality and wide applicability, supporting stable supply and project matching for global export markets.
Working Principle
Driven purely by fluid differential pressure, this stainless-steel sanitary welded check valve requires no external power or manual intervention. When upstream forward pressure acts on the internal disc inside the welded-end pipeline, the valve opens to allow smooth medium passage. When the pump shuts down or flow reversal generates back-pressure, the disc is forced firmly against the sealing surface, cutting off reverse flow automatically. This safeguards upstream process equipment such as pumps and meters from backflow impact and prevents cross-contamination of process media within sanitary piping circuits.
Why Choose KINGMAN
±0.005 mm Precision
Precision machining down to ±0.005 mm supports customized components where mating surfaces, connection geometry or equipment interfaces require tighter dimensional control than conventional standard products can provide.
Multiple Standards
Sanitary components can be manufactured around 3A, SMS, DIN, CE, BFD and ISO requirements, giving buyers more options when matching different piping systems, equipment specifications and international projects.
Lifetime Support
Our technical team remains available beyond delivery for questions involving product specifications, installation interfaces, replacement requirements and applications, giving you a continuing technical contact throughout subsequent product use.
