Girdlestone 980 - API 610 Pump

The Amarinth equivalent of the Girdlestone 980 API 610 7th edition Process Range consists of single stage, end suction, centrifugal pumps with centre-line mounting. In addition to the standard back pull out facility all pumps, except 1″ outlet types, include the unique 900 Series front access feature, which allows the impeller and seal assembly to be withdrawn from the suction end. These practical design features enable routine maintenance to be carried out with minimal downtime.

The modular construction provides a high degree of interchangeability and commonality of parts with other pumps in the 900 Series.

All 980 pumps are of a robustly designed construction to comply with API 610 standards. Pumps are available to cover maximum working pressures of either 25 bar (medium duty) or 40 bar (heavy duty). In accordance with the material codes listed in API 610. Alternatively, any castable and machinable alloy can be used.

The 900 Series design provides the optimum shaft seal environment and allows most types of single , double or tandem seals to be fitted.

Using modern computer aided design software the pumps are designed as a heavy duty, minimal wear, long life pump. Conceived as a modular design, with a number of options available, ensures full compliance with a customer's exact requirements and specifications. A heavy duty baseplate helps achieve low vibration and noise levels which in turn extends the pump's life and ensures maximum running time.

The pumps can be fitted with a variety of proprietary components (i.e. seals, motors and couplings) from all the major manufacturers to cater for customers site preferences. Double mechanical seal arrangements can be fitted with a seal support system attached. This can be supplied by Protect System, which is designed and manufactured by Amarinth, or if required another manufacturers' seal support system can be provided for Amarinth to install and fit.

To complete the package a full range of standard material options from cast iron and stainless steel, to super duplex and hastelloy are available to match your process fluid. NACE and NORSOK compliant materials are also available. Standard documentation packs including manufacturing data books, material certification, installation and operating manuals are available to suit the application. Performance testing to API 610 / ISO 13709 and various NDE (non destructive examination) and NDT (non destructive testing) options are offered to ensure full compliance to our customer's specifications. Alternative bespoke packages can be tailored to fit your exact requirements.

For more information about this product please get in touch using one of the methods below.

Hydraulic Performance


General description

A range of single stage centrifugal end suction pumps with centreline discharge manufactured in a variety of alloys.


Front and back pull out design with metal to metal fits

Design methodology

Advanced computer techniques including 3D modelling, FEA & CFD

Design standards

API 610 / ISO 13709
ATEX EC-Directive 94/9/EC

Design pressure rating

25 bar g at 40°C (medium duty)
40 bar g at 40°C (heavy duty)

Suction pressure rating

16 bar g (long coupled)

Temperature rating

-40°C to 200°C (long coupled)
-40°C to 250°C (long coupled with heat sink and fan)

Flow rate

Up to 1500³/h

Differential head

Up to 300m


Up to 3600 rpm


Long coupled pump
Bareshaft pump
Rotating assembly

Frame sizes

040x025x145 to 250x200x510

Design life

20 years (2 years uninterrupted operation)


Amarinth N Series pumps are available in a variety of materials as standard which include the following pump / impeller combinations.

Other alloys, including NACE compliant materials are available on request and our foundries are NORSOK approved.

In addition we offer specific NDT and component documentation to ensure compliance to your exact requirements.

Materials Casing Impeller
A8 - SS 316L / SS 316L ASTM A351 CF 3M ASTM A351 CF 3M
I1 - Cast iron / Cast iron ASTM A278 Class 30 ASTM A278 Class 30
S8 - Carbon Steel / SS 316L ASTM A216 WCB ASTM A351 CF 3M
S6 - Carbon Steel / 12% Cr SS ASTM A216 WCB ASTM A217 Gr CA15
D1 - Duplex SS / Duplex SS ASTM A890 Gr 4A (UNS J92205) ASTM A890 Gr 4A (UNS J92205)
D2 - Super Duplex SS / Super Duplex SS ASTM A890 Gr 6A (UNS J93380) ASTM A890 Gr 6A (UNS J93380)
Hastelloy B / Hastelloy B ASTM A494 Gr N 7M ASTM A494 Gr N 7M
Hastelloy C / Hastelloy C ASTM A494 Gr CW 12MW ASTM A494 Gr CW 12MW
Monel / Monel ASTM A494 Gr M35 1 ASTM A494 Gr M35 1
Titanium / Titanium ASTM B367 Gr C-2 ASTM B367 Gr C-2