VP Flanges
Similar to the SF Flange, the Valve Performance (VP) Flange provides a connection to valves or flanges with slotted drilling and a consistent internal diameter.
VP flanges combine proven special flange technology with design innovations that reduce installation complexity and cost. The PE100 welding neck collar pairs with a stainless steel AS4087 PN16 flange. Slotted holes in the collar enable easier assembly and alignment. The integrated spring effect maintains permanent bolt pretensioning after tightening. The result is lower installation effort, reduced project costs, and reliable performance at the same nominal diameter as your fittings.
Reinert-Ritz can also provide torque calculations for your application and provide a manufacturer-backed flange connection, removing risk from an area of pipeline design that is often the most problematic in PE pipelines.
The specialist and rated connection for valve connections and transition to steel/cast flanges.
Key Properties
| Specifications | Details |
| Collar material | PE100 welding spiogt |
| Backing flange material | Stainless Steel 316 |
| Hole pattern | AS4087 PN16 (other patterns on request) |
| Collar holes | Slotted holes for perfect alignment |
| Spring function | Integrated disc spring maintains bolt pretensioning |
| Intergrated seal | EPDM O-ring |
| Welding methods | Butt fusion or Electrofusion |
| Pressure capacity | Full pressure load capacity |
| Connection type | Positive engagement; flange supports collar from outside |
| Weight | Low weight reduces installation effort |
| Optional versions | Flat sealing without groove and O-ring – you then use a gasket |
| Standards | DIN EN 12201, DIN EN 1092–1, DVS 2207, DVS 2210, DIN EN 10204, DIN EN ISO 9001, DIN EN ISO 50001, DVGW W 400–2, DVGW GW 335, AS4087 PN16 |
| Approvals/certificates | DVGW: DV-8606BT0423 and DV-8611BT0424; DIN EN 10204 inspection certificate 3.1 on semi-finished product with MFR and OIT; PE100 material per PE100+ Association |
| Manufacturing | PE100+ Association compliant; DIN EN ISO 9001 quality assurance; single-piece homogeneous injection-moulded PE bodies; DIN EN 10204 certificates included; manufacturer certified to ISO 9001:2015 and ISO 50001:2011 |
Applications
VP flanges address the practical challenges of installing large-diameter flange connections. Slotted holes eliminate alignment problems and reduce on-site fitting time. The integrated spring function maintains bolt preload without rechecking after installation, ensuring consistent performance over time. Low weight and simplified assembly reduce labour and project cost.
Use VP flanges when you need:
Same nominal diameter connections with simplified assembly
Integrated spring function for permanent bolt pretensioning
Slotted holes for easier field alignment
Corrosion-free backing flange
Reduced installation labour and project costs
Full pressure capacity with lower maintenance burden
Valve and steel flange connections without oversizing
