Sell pump unit, the pump 1D 1250-125

Horizontal centrifugal two-way entry single stage pump 1D 1250-125 and similar pumps are used for pumping of water and liquids similar to water in viscosity and chemical activity density 1100 kg/cm3, a temperature of up to K (95° C), with content of solid inclusions not exceeding by weight of 0.05%, and the maximum size is 0.2 mm, micro hardness not more than 6,5 GPA (650 kgs/mm2).

Pump 1D 1250-125 refers to the recovered product General purpose according to GOST 27.003-90 and manufactured in climatic version and location category UHL 3.1, U2 and T2 according to GOST 15150-69.

The pump D, which is the index of performance "E" and equipped with explosion-proof motors are designed for installation in explosive and flammable locations. Classes of explosive zones 1,2 GOST R.9-99.

The symbol of the pump:

Pump 1D 1250-125 a-t-a-E-2 THE 26-06-1510-88 where
1 - the first modernization of the pump;
D - pump bilateral input;
1250 - flow, m3/h;
125 head, m,
a, b, m indexes the turning of the impeller;
a and b is reduced impeller diameter;
m - increased diameter of the impeller;
t - single mechanical seal shaft, without refer - a double seal;
And - performance material flow part,
A - carbon steel (steel 25L);
K - chromium-Nickel steel type HT;
B - impeller made of bronze;
Without designation of gray cast iron (SCH 25);
control panel - grey cast iron with anti-corrosive coating flow area of the housing and the cover;
E - designed for operation in explosive and flammable production facilities, without symbols for pumps not designed for use in explosive and flammable production facilities.
U - climatic version;
2 - category placement during operation.

The parameters of intended use parameters in the nominal regionswere Flow, m3/h (m3/s) Head, m input pump power, kW speed,
s-1 (rpm)
in nominal mode, the maximum working range
Pump 1D 1250-125 1250 (0.350) 125 560 610 24.2 (1450)
Pump 1D 1250-125 1150 (0.319) 102 410 455
Pump 1D 1250-b 1030 (being 0.286) 87 340 375
Pump 1D 1250-125 800 (0.222) 56 165 185 16.3 (980)
Pump 1D 1250-125 750 (0.208) 48 140 150
Pump 1D 1250-b 700 (from 0.194 b) 40 110 120


Notes
The values specified for the pump on the water with a temperature of 293K (20° C) and a density of 1000 kg/m3.
Valid production variance of pressure ±5%, supply ±8%.
The pressure at the inlet to the pump - 0.3 MPa (3 kgf/cm2), not more, for pumps with flow part of grey cast iron, - 0.4...0.6 MPa (4...6 kgf/cm2), not more, for pumps with machined impellers.
Power consumption - the value of reference and are subject to tolerance.

The technical indicators and energy effectivelymanage speed, s-1 (rpm) pump efficiency, % Permissible positive suction head, m, no more Leaks through the packing, m3/h (l/h) PN, MPa (kgf/cm2)
Ref. o.
Pump 1D 1250-125 24.2 (1450) 82 5.5 (0.05...1)X10-2
(0.5...10) 0.6 (6) 1.6 (16)
16.3 (980) 80 5.3


Notes
Efficiency is specified for the optimum mode in the operational range of characteristics for the impellers basic version and variants "m". The maximum permissible deviation for efficiency or minus 5%. For pumps with a reduced diameter impellers Pets reduction efficiency for options a - 3% b - 5%.
The leakage of the pumped fluid through each end seal is not more than 30 cm3/h (0.03 l/h).