You can send a request for quote for p/n 521-2 to Power Air Consulting using powerairconsulting.com. This part is manufactured by Dresser Industries Inc. The description of it is Valve Gate. The national stock number associated with this part is 4820008834596. This part belongs to part family. An associate from Power Air Consulting will respond within 15 minutes to your query. It is our pleasure to help you with 521-2 part requirements.