Method of proofing an innerduct/microduct and proofing manifold

A proofing manifold configured to proof a buried innerduct/microduct having a plurality of ducts comprising:

• a manifold comprising a manifold body configured to contain pressurized air;
• a manifold pressurized air inlet configured to provide pressurized air to the manifold;
• a plurality of proofing air jet connectors connected to the manifold;
• and
• a plurality of proofing air jets connected to the plurality of proofing air jet connectors, each proofing air jet comprising:
• a hollow elongated body having an air outlet and a suction inlet, the air outlet opposing the suction inlet:
• a pressurized air inlet into the body between the air outlet and the suction inlet, the pressurized air inlet being angled with respect to the hollow elongated body to flow pressurized air in a direction from the pressurized air inlet to the air outlet and provide a suction at the suction inlet;
• the air outlet having an innerduct/microduct connector for connecting to an opening of the innerduct/microduct;
• and
• the suction inlet having a string inlet configured to accept string, wherein the pressurized air inlet is connected to one of the proofing air jet connectors, and wherein the plurality of proofing air jet connectors are spaced apart on the manifold so that the plurality of proofing air jets can be mounted to the manifold body to match a location and number of the plurality of ducts, and more than one of the proofing air jets can be used simultaneously.