Brand: KoshinLtd — Robust, industrial-grade diesel water pump built for high-pressure applications. The SERH-50DHRS is the diesel-driven high-pressure member of the SERH-50 family, designed for reliable field performance and portable heavy-duty use.

The SERH-50DHRS pairs a Koshin high-pressure centrifugal pump end with a Hatz diesel engine (Hatz 1B30) and a recoil start configuration, supplied on a full crash frame with wheels for transportability. Typical performance for this diesel variant is high flow with maximum heads around the 60–62 m range and flow rates reported up to approximately 550–570 L/min depending on configuration and tuning. The unit uses a 2½" (suction) × 2" (discharge) connection layout common to 2" class high-pressure pumps.

• Model: SERH-50DHRS
• SKU: 050-044HR
• Engine: Hatz 1B30 diesel (recoil start)
• Max Flow: up to ~550–570 L/min
• Max Head: ~62 m
• Inlet / Outlet: 2½" BSPM suction / 2" BSPM discharge
• Features: high-pressure self-priming centrifugal pump end, robust crash frame, wheel kit option

This pump is engineered for demanding tasks including irrigation, agricultural water transfer, dewatering, pond and tank filling/draining, and emergency firefighting support. Its high-pressure design and durable construction make it well suited for long-distance water delivery, sprinkler systems, and site dewatering on construction or remote agricultural sites.