Looks like a mq to me.
What Type of Valve Do I Have and Where Can I Find Troubleshooting and Technical Information?
I now have two separate pages for the mQ and MQ2 valves. These pages are largely duplicates, with certain wording and details changed to reflect the different valves.
PBX mQ-Valve - Identified by either blue or silver aluminum parts, with an exposed silver colored solenoid in the pilot, and an o-ring on the front of the poppet.
MTX Designs MQ2-Valve - Identified by red aluminum parts, a totally enclosed pilot assembly, and a urethane disk on the front of the poppet.