The D-MP□ series operation manual can be found here.
For details on the MRHQ-X103, refer here.
Model: VP500, Body Type: Base Mounted, Pilot Type: External Pilot, Voltage: 24VDC, Electrical Entry: DIN EN-175301-803C Terminal w/Connector, Light/Surge Voltage Suppressor: None, Manual Override: Non-locking Push Type, Port Size: 3/8 Base Mounted, Thread: NPTF, Actuation: N.C.; Normally Closed, Bracket: -
Part Number Description: CHECK VALVE Product Line: V Product Line Description: VALVE Family Code: 366 Family Description: AK CHECK VALVE Class Code: EN Part Code: 1 Reference Code: E PDF Documentation: Datasheet Click here to report information errorImage shown may not match exact part number
VEX1□0□ series regulator valves (3-port large exhaust capacity regulator valves)
・An external pilot solenoid type and an air operated type are available.・The pressure can be controlled remotely, and pipes of up to 2 inches are supported.
https://www.smcpneumatics.com/Part-Builder-Links_ep_2458-1.html?https://smccatalog.partbuilder.smcpneumatics.com/support/faq/en-jp/?ca_id=directional-control-valves&fa_id=10039
Body Size: 40, Type: A (Electro-Pneumatic Regulator Type), Pipe Thread: H (without Attachments), Port Size: 00 (without Attachments), Normally Open, Closed: D (N.O., Normally Open, Protocol: PN [PROFINET, OPC UA (When Wireless Adapter is Connected: Wireless Base)], Unit: K (EXA1/ITV: Units Selection Function), Manual Override: G (Non-locking Push Type)
Body Size: 60, Type: A (Electro-Pneumatic Regulator Type), Pipe Thread: H (without Attachments), Port Size: 00 (without Attachments), Normally Open, Closed: D (N.O., Normally Open, Protocol: PN [PROFINET, OPC UA (When Wireless Adapter is Connected: Wireless Base)], Unit: K (EXA1/ITV: Units Selection Function), Manual Override: G (Non-locking Push Type)