Pumps 2VV, 2VG twin-screw oil, for Viscous media

(Equipment / Material)

Condition: New

Location or Storage Country: Russia

Service Engineering Support: Yes

Warranty: Yes

Price: Call for price

Description:

PURPOSE Twin-screw pumps of the 2VV, 2VG type and electric pump units based on them are intended for pumping liquids in a wide range of viscosities (1-1500 cSt)1), chemically inactive with respect to the materials used, of various hazard classes. Twin-screw pumps of the 2VV, 2VG type and electric pump units based on them, provided that they are equipped with the appropriate components, can be used in various zones (general industrial, fire hazardous, explosion and fire hazardous)2). Notes: 1) Upon agreement with the manufacturer, it is allowed to use pumps of the 2VV and 2VG type on liquids having a viscosity different from that given above. 2) Pumps of type 2BB (manufactured according to TU3632-094-05747979-2002) of series A1, A5 and pumps of type 2BB (manufactured according to TU 3632-064-05747979-99) are equipped with a single mechanical seal - are not allowed for pumping explosive liquids when used in explosion hazardous areas. Pumps of type 2BB (manufactured according to TU3632-094-05747979-2002) of series A2, A6 are equipped with a double mechanical seal, pumps of series A8 are equipped with a single mechanical seal with an additional one - are allowed for pumping explosive liquids. Pumps of type 2VG (manufactured according to TU 26-06-1596-90) can be equipped with a single, single with auxiliary or double mechanical seal. Depending on the type of seal used, pumps of type 2VG can pump fire and explosive liquids. Pumps included in the units are classified as general-purpose products (ION) type I (repairable) according to GOST 27.003-90, manufactured in climatic version U, placement category 2 according to GOST 15150-69. At the customer's request, it is possible to manufacture pumps in a different climatic version. When developing the pumps, the safety requirements according to OST26-06-2028-96, as well as the norms and rules of Rostekhnadzor according to PB08-624-03, PB09-540-03, PB09-563-03 were taken into account. The pumps can be used in explosion-hazardous zones B-1a, B-1b, B-1g, according to the Electrical Installation Code with environments of explosion hazard category IIA, IIB according to GOST R 51330.11-99, flammability group T1, T2, T3, T4 according to GOST R 51330.5-99. DESIGN The pump unit consists of a twin-screw pump and an electric motor mounted on a common foundation frame. The motor and pump are connected via a coupling sleeve. The pump is a positive-displacement, horizontal pump. Two synchronously rotating rotors with a special screw thread are placed in the bores of the pump collar. The replaceable collar is inserted into the welded pump casing. Rotation from the leading rotor to the driven one is transmitted via synchronizing gears. The rotors rest on bearings located outside the hydraulic part of the pump. The pump body in the heating version (2VG) has a chamber designed for heating (cooling) the body with a coolant. The working cavity of the pump is closed at the ends by bearing housings, and the shafts are sealed with mechanical seals or packing. The units can be equipped with a soft starter, frequency converter, control and management system at the customer's request.

Overview:

Stamps	Feed, m³/h, not less than	Pump outlet pressure, kgf/cm² no more than	Rotation speed, rpm	Efficiency, %	Seal type
2BB 1.6/16	1.6	4	2900	23	T
2BB 2.5/16	2.5	4	2900	28	T
2BB 4/16	4	4	2900	38	T
2BB 6.3/16	6.3	4	2900	40	T
2BB 10/16	6	6.3	1450	41	T
2BB 16/16	16	4	1450	48	T
2BB 25/16	23	5	1450	50	T
2ВГ25/16	18	16	1450	35	TD
2ВГ40/16	35	16	1450	50	TD
2ВГ63/16	55	16	1450	50	TD
A1 2BB 50/25	50	25	1450	50	T
A1 2BB 63/25	63	25	1450	50	T
A1 2BB 80/25	80	25	1450	50	T
A1 2BB 125/25	125	25	1450	50	T
A1 2BB 160/25	160	25	1450	50	T
A1 2BB 320/25	320	25	1450	60	T
A1 2BB 400/20	400	20	1450	60	T
A5 2BB 16/25	16	25	1450	50	T
A5 2BB 25/25	25	25	1450	50	T
A5 2BB 50/25	50	25	1450	50	T
A5 2BB 63/25	63	25	1450	50	T
A5 2BB 80/25	80	25	1450	50	T
A5 2BB 125/25	125	25	1450	50	T
A5 2BB 160/25	160	25	1450	50	T
A5 2BB 320/25	320	25	1450	60	T
A5 2BB 400/20	400	20	1450	60	T
A2 2BB 80/25 ^new	80	25	1450	50	TD
A2 2BB 160/25 ^new	160	25	1450	50	TD
A2 2BB 50/40 ^new	50	40	1450	55	TD
A2 2BB 80/40 ^new	80	40	1450	55	TD
A2 2BB 125/40 ^new	125	40	1450	55	TD
A2 2BB 320/25	320	25	1450	60	TD
A2 2BB 400/20	400	20	1450	60	TD

Notes:

Type of shaft seal structurally installed in pumps: T - single mechanical seal, TV - single mechanical seal with auxiliary seal, TD - double mechanical seal.
External leakage through the seal is no more than 0.15 l/h.
The permissible pressure at the pump inlet is given in the operating documentation.
The weight and overall dimensions of the pump (unit) are given in the operating documentation.
The pump performance is given for pumping liquids with viscosity:
- - for pumps of type 2ВВ according to TU 3632-064-05747979-99 – 1 cSt;
- - for pumps of type 2VG according to TU 26-06-1596-90 and pumps of type 2VV according to TU 3632-094-05747979-2002 – 75 cSt;

SYMBOL

Pump A6 2BB 80/40-K-TD4-R1-E U2 TU 3632-094-05747979-2002 , where:

Pump – equipment type
A6 – pump design
2ВВ – pump type (two-screw, with remote bearings)
80 – nominal pump flow, m3/h;
40 – maximum pump pressure, in MPa, increased by 10 times;
K – material design of the pump:
K-chromium-nickel steel,
E – chromium-nickel-molybdenum steel,
A-steel 09G2S,
St3, steel 20 – no designation;
TD – seal type:
T - single end,
TV - single end with auxiliary,
TD - double end,
TT - tandem type end face
4 – Seal manufacturer:
1 – JSC “HMS Livgidromash”;
2 – Burgmann;
3 – Graflex;
4 – Tram;
5 – Sealants;
6 – John Crane;
7 – AESSEAL;
8 – Megatechcom
P1 – type of rubber compound used in rubber products:
P1 - 3826,
P2 - 1314,
R3 - SB-26,
P4 - other
E – explosion-proof design of the pump;
U – climatic version;
2 – accommodation category;
TU 3632-094-05747979-2002 – technical conditions for delivery.

Unit A6 2BB 80/40-80/40-K-TT4-R2-250-E U2 TU 3632-094-05747979-2002 , where:

Unit – type of equipment
A6 – pump design
2ВВ – pump type (two-screw, with remote bearings)
80 – nominal pump flow, m3/h;*
40 – maximum pump pressure, in MPa, increased by 10 times;*
80 – pump flow rate in the unit, m3/h;**
40 – maximum pump pressure in the unit, in MPa, increased by 10 times;**
K – material design of the pump:
K-chromium-nickel steel,
E – chromium-nickel-molybdenum steel,
A-steel 09G2S,
St3, steel 20 – no designation;
TD – seal type:
T - single end,
TV - single end with auxiliary,
TD - double end,
TT - tandem type end face
4 – Seal manufacturer:
1 – JSC “HMS Livgidromash”;
2 – Burgmann;
3 – Graflex;
4 – Tram;
5 – Sealants;
6 – John Crane;
7 – AESSEAL;
8 – Megatechcom
P1 – type of rubber compound used in rubber products:
P1 - 3826,
P2 - 1314,
R3 - SB-26,
P4 - other
250 – power of the electric motor, kW;
E – explosion-proof design of the pump;
U – climatic version;
2 – accommodation category;
TU 3632-094-05747979-2002 – technical conditions for delivery.

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Company Profile

JSC "GMS Livgidromash"

Main Products/Services: Pumping equipment