Positive Displacement Pumps

Positive displacement pumps are speciality pumps that provide an approximate constant flow of fluid at the fixed speed. Pump trap a fixed amount of the fluid and then force it into a discharge pipe. Positive displacement pumps can produce the same flow at a given speed (RPM) no matter what the discharge pressure is. These type of pumps cannot operate against the closed valve because they have no shutoff head like centrifugal pumps. Positive displacement pumps constantly produce flow and the pressure built within the blocked line will damage the line, pump or both.
The positive displacement pumps can be divided into two main categories:
A. Rotary pumps are very efficient because they can operate even with highly viscous fluids but require a slow steady speed rotation. If the mechanism rotation is too fast, the fluid can cause erosion, which eventually causes enlarged clearances that liquid can pass through and reduce pressure.
Rotary pumps can be divided into three main types:
• Gear pumps: the simplest pump type that pumps liquid using 2 gears.
• Screw pumps: more complicated pump type where the two screws are positioned against each other to pump the liquid.
• Rotary vane pumps: these pumps have a cylindrical rotary engine. As the rotor circulates, vans trap fluid between the rotor and the engine housing, pushing the liquid through the pump.

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총 138개 제품 중 1번째-20번째 제품을 조회 중
한장내 검색 결과 수
제품설명 단가 Pump Type Drive Type Maximum Flow Rate Maximum Head Maximum Working Pressure Input Connection Output Connection IP Rating Series Maximum Fluid Temperature Body Material Supply Voltage Input Power Wetted Materials
RS 제품 번호 705-6687
제조사 부품 번호AU R2550015 RS1
제조사Verderflex
₩291,723.95
Each
수량
Peristaltic Electric 0.03L/min 10m 1 bar - - - R2550 +40°C ABS, PC 12 V dc 6VA -
RS 제품 번호 705-6671
제조사 부품 번호AU R2550120 RS1
제조사Verderflex
₩286,052.50
Each
수량
Peristaltic Electric 0.24L/min 10m 1 bar - - - R2550 +40°C ABS, PC 12 V dc 6VA -
RS 제품 번호 705-6659
제조사 부품 번호AU ES3R16
제조사Verderflex
₩173,347.35
Each
수량
Peristaltic Electric - 20m 1 bar - - - ES3R1 +40°C Polyamide - 20W -
RS 제품 번호 705-6656
제조사 부품 번호AU EZ3R16
제조사Verderflex
₩173,347.35
Each
수량
Peristaltic Electric - 20m 1 bar - - - EZ3R1 +40°C Polyamide - 20W -
RS 제품 번호 702-6894
제조사RS PRO
₩74,607.70
Each
수량
Diaphragm Electric 150ml/min - 1 bar - - IP50 D200 +100°C Nylon 1.5 → 4.5 V 0.48W Nitrile, Nylon, Silicone
RS 제품 번호 705-9321
제조사 부품 번호RLFP122202D
제조사Xylem Flojet
₩131,323.75
Each
수량
Diaphragm Electric 3.8L/min 21m 2.5 bar 3/8 in Hose Barb 3/8 in Hose Barb - RLF122 +43°C PP 12 V dc 30W EPDM, PP, Santoprene, Stainless Steel, Viton
RS 제품 번호 667-9194
제조사 부품 번호TEP50PTWD
제조사Tecnomatic
₩1,178,544.05
Each
수량
Diaphragm Air 53L/min 70m - 1/2 in G 1/2 in G - TE53-PTW - PP - - -
RS 제품 번호 705-6675
제조사 부품 번호AU R2550060 RS1
제조사Verderflex
₩287,413.40
Each
수량
Peristaltic Electric 0.12L/min 10m 1 bar - - - R2550 +40°C ABS, PC 12 V dc 6VA -
RS 제품 번호 121-8598
제조사 부품 번호DF2A0208P00A10W1
제조사ProMinent
₩481,197.50
Each
수량
Peristaltic Electric 0.8L/h - 1.5 bar - - IP65 DF2a +20°C - 230 V 5 (Consumption)W -
RS 제품 번호 705-9333
제조사 부품 번호R3711132A
제조사Xylem Flojet
₩228,173.95
Each
수량
Diaphragm Electric 5.5L/min 69m 6.9 bar 3/8 in BSP 3/8 in BSP - R371 +60°C Glass Fibre Reinforced Nylon 12 V dc 108W -
RS 제품 번호 702-6898
제조사RS PRO
₩98,807.85
Each
수량
Diaphragm Electric 380ml/min - 11 psi - - IP50 D250 +100°C Aluminium 1.5 → 5 V 0.48W Anodized Aluminium, Nitrile, Silicone, Stainless Steel
RS 제품 번호 667-9182
제조사 부품 번호TEP130-PX
제조사Tecnomatic
₩1,418,347.65
Each
수량
Diaphragm Air 132L/min 80m - 1 in Push Fit 1 in Push Fit - TEP132 - PP - - -
RS 제품 번호 705-6678
제조사 부품 번호AU EV EZ
제조사Verderflex
₩1,878,812.35
Each
수량
Peristaltic Electric 0.6L/min 20m 1 bar - - IP40 EV-EZ +40°C Polyamide 100 → 120 V, 220 → 240 V 100VA -
RS 제품 번호 446-3483
제조사 부품 번호416989
제조사Xylem Flojet
₩493,726.15
Each
수량
Diaphragm Electric 3L/min 89m 20 bar - - IP44 AD4/90 +77°C - 230 V 55W -
RS 제품 번호 705-9327
제조사 부품 번호RLF222201D
제조사Xylem Flojet
₩159,243.90
Each
수량
Diaphragm Electric 3.8L/min 21m 2.5 bar 3/8 in Hose Barb 3/8 in Hose Barb - RLF222 +43°C PP 24 V dc 30W -
RS 제품 번호 667-9097
제조사 부품 번호R4300242A
제조사Xylem Flojet
₩401,169.45
Each
수량
Diaphragm Electric 12L/min 40m 2.1 bar 1/2 in Hose Barb 1/2 in Hose Barb IP44 R4300 +54°C Glass Fibre Reinforced PP 230 V ac - -
RS 제품 번호 619-4432
제조사 부품 번호156993
제조사Burkert
₩299,670.80
Each
수량
Diaphragm Electric 5ml/min - 200 mbar - - IP40 7604 +60°C PEEK 24 V dc 1.5W FFKM, PEEK
RS 제품 번호 705-6665
제조사 부품 번호AU EZ3R16 060 02
제조사Verderflex
₩482,062.40
Each
수량
Peristaltic Electric 0.225L/min 20m 1 bar - - - EZ3R1 +40°C Polyamide 12 V dc 17W -
RS 제품 번호 144-844
제조사 부품 번호BL 5/D
₩293,542.10
Each
수량
Diaphragm Electric 5L/h - 101.5 psi - - IP65 BL5/D - Glass Fibre Reinforced PP 220 V, 240 V 200W -
RS 제품 번호 144-850
제조사 부품 번호BL 10/D
₩301,324.65
Each
수량
Diaphragm Electric 10.8L/h - 43.5 psi - - IP65 BL10/D - Glass Fibre Reinforced PP 220 V, 240 V 200W -