Grooved flange
Rapid & Efficient Installation: Features a grooved connection design that eliminates the need for complex butt welding. Simply slide the flange onto the pipe, align the groove, and secure with a coupling—reducing installation time by 50% compared to welded flanges, ideal for emergency repairs and large-scale pipeline projects.
No Damage to Pipe Integrity: Grooved connection avoids high-temperature welding, preventing pipe material deformation, internal corrosion, or structural weakening. Maintains the original mechanical properties of the pipe, ensuring long-term system stability.
Superior Sealing Performance: Integrates a rubber gasket (EPDM, NBR, Viton) with the grooved structure, forming a triple-seal effect (mechanical compression + medium pressure self-sealing + gasket elasticity). Effectively resists leakage of water, oil, gas, and moderately corrosive media, even under vibration or pressure fluctuations.
1. Overview
Grooved flange (grooved end flange) is an efficient piping connector with pre-machined grooves and mechanical coupling fixation. It replaces traditional welding/threading, complying with ANSI/AWWA C110, EN 1092-1, GB 5135.11. Widely used in fire protection, water supply, HVAC, chemical, oil & gas fields, especially for pipelines ≥80mm (per fire sprinkler codes).
Parameter Type | Details |
|---|---|
Size Range | Standard: 1½" - 48" (DN40 - DN1200); Customizable up to 60" (DN1500) for large-diameter pipelines. |
Pressure Ratings | - ANSI/AWWA: Class125/150, 250 psi (ductile iron); - GB/EN: PN6-PN40; - High-pressure: Up to PN250 for special scenarios. |
Material Options | - Ductile Iron: ASTM A536 70-50-05; - Carbon Steel: 20#, A105; - Stainless Steel: 304, 316L; - Cast Iron: ASTM A48. |
Temperature Range | -20℃ - 230℃ (standard gaskets); -40℃ - 280℃ (special Viton gaskets). |
Compliance Standards | - International: ANSI/AWWA C110, EN 1092-1; - Domestic: GB 5135.11, GB/T 9119. |
Quick Installation: No welding; 50% faster than welded flanges, ideal for emergencies.
Pipe Protection: Avoids welding damage, maintaining pipe mechanical properties.
Reliable Sealing: Rubber gasket forms triple seal, resisting leakage under vibration.
