Based on the search results, I couldn’t find specific information about “SDV70 sectional valve” or “SDV40 control valve” from Chinese manufacturers. However, I did find some related products that might be of interest:

1. • Type: Direct-acting pressure reducing valve

   • Maximum working pressure: 250 bar (3,625.9 psi)

   • Flow rate: 265 l/min (70.01 us gal/min)

   • Temperature range: -40°C to +120°C

   • Features hardened, precision-ground components and compact design

2. SDV Series Electric Actuators by Suzhou Deyo Valve Co., Ltd. 2

   • Compact design (35% smaller than similar products)

   • Lightweight (1/3 the weight of similar products)

   • Multiple protection features: electrical limit, mechanical limit, overheating protection, etc.

   • Various speed options available (5-100 seconds)

   • Intelligent control with digital setting and self-diagnosis

directional control valve is a segment type design that can be stacked together in parallel. It consists of three elements – an inlet Section valve, work sections with a wide choice of spool configurations and an outlet section, all bolted together as a single unit. The number of work sections in the valve unit are determined by the number of hydraulic elements to be operated. The valves are mounted on equipment at one location to meet the requirements of controlling multiple hydraulic elements from a single point by a single operator.

Simple, compact and heavy duty designed sectional valve having parallel work sections with individual load ports for both open center, closed center and power beyond

applications. Spring center is standard. Detent options available on request. Work port relief valves and anti-cavitation check valves are available. Spool end caps, lever end or protected from dust by bellows inlet and outlet ports with threading options for UNF, BSP, NPTF. Load check valves for all spools to prevent back flow from pump. Work Port Relief valve provision to limit the pressure in each spool section.