Unison Valves Pvt Ltd manufactures Thermodynamic Steam Trap. Unison Valves Pvt Ltd is an ISO 9001:2000 certified company. Thermodynamic Steam Trap is streamlined and compact. Thermodynamic Steam Trap has only one moving part, therefore minimal maintenance. The size is 15, 20 & 25 MM.NB. The machine has unions or flanges installed on both sides of the trap and that permits easy maintenance. It is advisable to have a larger return line to prevent back pressure build-up. The machine has the condensation of the discharges at steam temperature to prevent water logging. All mating parts have metal to metal seating thereby eliminating sealing material.