{"product_id":"tsurumi-ktze31-5-cast-iron-automatic-submersible-drainage-pump-for-excavation-dewatering-with-semi-open-impeller","title":"Tsurumi KTZE31.5 Cast Iron Automatic Submersible Drainage Pump for Excavation Dewatering with Semi-open Impeller","description":"\u003cp\u003eAutomatic excavation dewatering becomes energy-efficient with this submersible pump's integrated level detection system. An innovative electrode type relay unit automatically manages start and stop cycles based on water level contact, eliminating dry-running and excessive mechanical stress. This mechanism is ideal for construction environments where maintaining a clear site under fluctuating levels is critical.\u003c\/p\u003e\u003cp\u003ePowered by a 1.5 kW \/ 415v motor, the unit produces up to approximately 670 L\/Min flow and up to approximately 14.4 m of head through its 80 mm bore. The combination provides consistent horizontal displacement and stable vertical lift for automatic excavation dewatering. The system handles drainage fluids with up to 10% dry matter and operates reliably in varied chemical runoff across a pH range of 5 to 9.\u003c\/p\u003e\u003cp\u003ePumping performance is supported by a high-chromium cast iron semi-open impeller that resists the erosive impact of high-velocity abrasive particles. The pump maintains smooth passage for solids up to 8.5 mm, ensuring site debris is moved through the housing without settling or causing performance drop-off. This design ensures that abrasive particles are carried through the pump with minimal casing impact, extending the service life of the pump housing.\u003c\/p\u003e\u003cp\u003eDual inside mechanical seals with silicon carbide faces are isolated in an oil chamber featuring Tsurumi's original Oil Lifter. A top discharge design and side flow cooling mechanism ensure effective motor heat dissipation. An anti-wicking cable entry block and circle thermal protector built into the 1.5 kW motor housing guard against moisture and thermal stress.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFEATURES\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eIntegrated electrode relay unit provides reliable automatic operation to prevent dry-running and reduce power costs.\u003c\/li\u003e\n\u003cli\u003eHigh-chromium iron semi-open impeller provides superior abrasion resistance compared to standard ductile iron.\u003c\/li\u003e\n\u003cli\u003eSide flow discharge design maintains effective motor cooling even when the unit operates exposed to air.\u003c\/li\u003e\n\u003cli\u003eSelectable discharge orientation prevents discharge hose folding and simplifies installation on site.\u003c\/li\u003e\n\u003cli\u003eDouble-face silicon carbide mechanical seals provide ultimate durability against abrasion and chemical corrosion.\u003c\/li\u003e\n\u003cli\u003eTsurumi's original Oil Lifter ensures seal lubrication even down to one-third of the normal oil level.\u003c\/li\u003e\n\u003cli\u003eAnti-wicking cable block protects the motor from moisture ingress through the electrical cable sheaths.\u003c\/li\u003e\n\u003cli\u003eBuilt-in circle thermal protector proactively monitors motor temperature and interrupts the circuit during overload.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Tsurumi","offers":[{"title":"Default Title","offer_id":50933811085559,"sku":"KTZE31.5","price":0.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0927\/0116\/3767\/files\/tsurumi-ktze31-5-cast-iron-automatic-submersible-drainage-pump-for-excavation-dewatering-with-semi-open-impeller.png?v=1783914259","url":"https:\/\/foundationpumps.com.au\/products\/tsurumi-ktze31-5-cast-iron-automatic-submersible-drainage-pump-for-excavation-dewatering-with-semi-open-impeller","provider":"Foundation Pumps","version":"1.0","type":"link"}