PAS series
Liquid-ring self priming stainless steel pump
The PAS series pumps have the following features:
Their resistance to chemical aggression makes them suitable for the chemical, pharmaceutical and textile industry, while their versatility makes them suitable for the wine-food industry.
On request, pumps can be supplied on a stainless steel carriage fitted with a switch/rotation direction inverter.
The pumps can also be supplied with DIN 11851, Garolla or Macon fittings.
Liquid-ring self priming stainless steel pump

Flow rate up to 240 lt/min
Head up to 60 mt
Operating temperature max 110°C
Operating pressure max 7 bar
Motors from 0.3 HP to 6 HP - 1400/2800 RPM
Entirely made of AISI 304/316 high thickness stainless steel
Suitable for aggressive liquids

Self-priming pump
Liquid-ring self priming pump able to handle liquids with dissolved gases and to operate at a depth of up to 6 metresVariable flow rate
The PAS series pumps are fitted with an internal bypass, which can be adjusted to partly reduce the flow rateReduced speed
Some models are supplied with a 1400 RPM motor, which ensures a softer and more gentle pumping action
High thickness pump casing
High thickness steel (3mm) which ensures a higher mechanical and corrosion resistance, and therefore a longer lifeFlammable liquids
For handling flammable liquids, explosion proof motors compliant with Atex standards are suppliedFlow reversibility
On request, a motor that can reverse its direction of rotation is supplied, to ensure full flow reversibilityStainless steel impeller
The impeller is made from microcasting of AISI 304 or 316 stainless steel. Its shape has been optimised to ensure a high hydraulic efficiency

Internal suction filter
The PAS series pumps are the only pumps fitted with an internal filter that allows any impurity in the fluid to be collected. The filter can be easily removed to carry out inspection and cleaning operationsGreater safety
To ensure a greater safety, the pumps with Atex motors are fitted only with motors certified to operate in more hazardous environments (zone 2 category 2G), although the pump is classified for zone 2 category 3G
- Priming at a depth of up to 5 m with the pump filled
- Flow reversibility available on request
- Suction filter fitted to collect any impurity that may be present in the liquid
- Suitable for handling aggressive liquids
- Fitted with a bypass to partly adjust the flow rate/head
- High thickness steel (3mm) which ensures a higher mechanical and corrosion resistance, and therefore a longer life
- High hydraulic efficiency
- Explosion proof motors can be provided to pump flammable liquids
- Microcast impeller from AISI 304/306 stainless steel
- Mechanical seal with NBR, FPM or PTFE elastomers
Their resistance to chemical aggression makes them suitable for the chemical, pharmaceutical and textile industry, while their versatility makes them suitable for the wine-food industry.
On request, pumps can be supplied on a stainless steel carriage fitted with a switch/rotation direction inverter.
The pumps can also be supplied with DIN 11851, Garolla or Macon fittings.
Technical Specifications
MOD | MOTOR | FLOW RATE [lt/min] ± 5% | Ø PORTS | ||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
HP | RPM | TYPE | 0 mt | 5 mt | 10 mt | 12 mt | 15 mt | 20 mt | 22 mt | 25 mt | 30 mt | 35 mt | 40 mt | 45 mt | 50 mt | 55 mt | 60 mt | ||
A-110 | 0.3 | 1400 | Single-phase | 44 | 28 | 13 | 7 | - | - | - | - | - | - | - | - | - | - | - | Ø 1" gas male thread |
0.5 | 1400 | Three-phase | 44 | 28 | 13 | 7 | - | - | - | - | - | - | - | - | - | - | - | ||
0.5 | 2800 | Single-phase | 76 | 64 | 53 | 49 | 42 | 30 | - | - | - | - | - | - | - | - | - | ||
0.75 | 2800 | Three-phase | 79 | 68 | 57 | 53 | 47 | 36 | 32 | 25 | 15 | - | - | - | - | - | - | ||
A-130 | 0.75 | 1400 | Three-phase | 79 | 67 | 53 | 46 | 35 | 5 | - | - | - | - | - | - | - | - | - | Ø 1 ¼" gas male thread |
1.5 | 2800 | Single-phase | 115 | 102 | 88 | 81 | 71 | 50 | - | - | - | - | - | - | - | - | - | ||
2 | 2800 | Three-phase | 124 | 114 | 104 | 100 | 94 | 83 | 79 | 72 | 62 | 51 | - | - | - | - | - | ||
2.5 | 2800 | Three-phase | 129 | 120 | 110 | 106 | 100 | 90 | 86 | 80 | 69 | 58 | 47 | 35 | - | - | - | ||
A-150 | 2.5 | 1400 | Three-phase | 136 | 121 | 102 | 93 | 76 | 34 | 9 | - | - | - | - | - | - | - | - | Ø 1 ½" gas male thread |
4.5 | 2800 | Three-phase | 245 | 231 | 217 | 211 | 202 | 187 | 181 | 172 | 156 | 140 | - | - | - | - | - | ||
6 | 2800 | Three-phase | 241 | 229 | 217 | 212 | 204 | 190 | 185 | 176 | 161 | 144 | 127 | 107 | 86 | 60 | 29 |

REF
DESCRIPTION
MATERIALS
1
Flange
Stainless Steel
2
By-Pass Cap Screw
Stainless Steel
3
Washer
Stainless Steel
4
By-Pass Cap
Stainless Steel
5
Piston
Stainless Steel
6
Piston O-Ring
NBR or FPM
7
Spring
Stainless Steel
8
Valve
Stainless Steel
9
Casing Suction Side
AISI 304 or 316 Stainless Steel
10
Body Seal Ring
NBR or FPM
11
Impeller Screw
Stainless Steel
12
Impeller Screw O-Ring
NBR or FPM
13
Impeller
AISI 304 or 316 Stainless Steel
14
Seal Rotating Part
Graphite, Stainless Steel, NBR or FPM or PTFE
15
Seal Fixed Part
Ceramic, NBR or FPM or PTFE
16
Compensation Ring
Steel
17
Casing Delivery Side
AISI 304 or 316 Stainless Steel
18
Spacing Ring
AISI 304 or 316 Stainless Steel
19
Electric Motor
-------
21
Washer
Steel
22
Filter Cap
AISI 304 or 316 Stainless Steel
23
Filter Cap Seal
NBR or FPM or PTFE
24
Filter
AISI 304 or 316 Stainless Steel
25
Tie Rod
Stainless Steel


MOD | MOTOR | Dimensions [mm] | α [deg] |
Ø | ||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
HP | RPM | A | B | C | D | E | F | G | H | I | L | M | N | O | P | |||
A-110 | 0.3 | 1400 | 345 | 182 | 72 | 75 | 90 | 50 | 130 | 101 | 8 | 27 | 58 | 112 | 137 | 10 | 25° | 1" |
0.5 | 1400 | 188 | ||||||||||||||||
0.5 | 2800 | 182 | ||||||||||||||||
0.75 | 2800 | 188 | ||||||||||||||||
A-130 | 0.75 | 1400 | 400 | 208 | 80 | 87 | 100 | 55 | 158 | 122 | 10 | 30 | 74 | 125 | 155 | 10 | 25° | 1 ¼" |
2 | 2800 | 410 | 225 | 90 | 90 | 100 | 62 | 158 | 125 | 10 | 30 | 74 | 140 | 175 | 12 | 25° | ||
2.5 | 2800 | 435 | 225 | 90 | 90 | 125 | 62 | 158 | 150 | 10 | 30 | 74 | 140 | 172 | 13 | 25° | ||
A-150 | 2.5 | 1400 | 485 | 255 | 100 | 97 | 140 | 73 | 175 | 170 | 12 | 41 | 71 | 160 | 198 | 13 | 25° | 1 ½" |
4.5 | 2800 | 518 | 280 | 112 | 108 | 140 | 95 | 175 | 172 | 13 | 41 | 71 | 190 | 227 | 17 | 25° | ||
6 | 2800 | 520 | 280 | 112 | 110 | 140 | 95 | 175 | 172 | 13 | 41 | 71 | 190 | 227 | 17 | 25° |