1. Simple orifice valve \ PN40 DN150 20 × 316 with straight pipe section 2. Simple orifice valve \ PN40 DN80 20 × 316 with straight pipe section 3. Simple orifice valve \ PN40 DN50 20 × 316 with straight pipe section 4. Advanced orifice valve \ PN40 DN300 20 × 316 with straight pipe section 5. Advanced orifice valve \ PN40 DN100 20 × 316 with straight pipe section TAG：