Welded Diaphragm Accumulators type AMS

Description

The welded type diaphragm accumulators cannot be repaired, as they are specially designed for high quantity and economical applications, where it is more practical to replace the unit rather than refurbishing it. These accumulators consist of a shell manufactured with a high strength alloy steel and a welded electron-beam.
The flexible diaphragm provides excellent gas and fluid separation. Dia- phragm are available in two compounds: - “P” nitrile (NBR) - “Y” hydrin (ECO)
– “B” = Butyl (IIR) - “V” = Fluorocarbon (FKM) The button closes the fluid port when the accumulator is fully discharged to prevent diaphragm extrusion. The fluid port is available provided with two types of connections: - “G” BSP UNI228 female - “W” BSP UNI228 female and external metric male The gas valve is available in two versions: - “VT” fixed pre-charge -“VM” metric M28x1.5 gas valve and leak-free. It offers flexibility of chec- king or charging the accumulator (see charging kit type PCM).
This rugged gas valve features an internal hexagonal locking screw with sealing washer. Diaphragm accumulators type AMS are then preferably used as shock absorbers and pulsation dampeners in the following sectors: industrial, machine tools, furniture and agriculture.
Compared to other accumulator types, the diaphragm ones have the hi- ghest energy density (energy content / mass). This feature is due to the spherical shape of the accumulator shell. For the diaphragm accumulators, you can choose any type of installation. The preferred assembly is, however, the vertical one.

Technical data

MAX OPERATING PRESSURE (PS):

(carbon steel) 100 – 160 – 210 – 250 – 350 bar (stainless steel) 100 bar (other, upon request)

PRESSURE TEST (PT): 1,43 x PS NOMINAL CAPACITIES: litres

0.075 – 0.16 – 0.25 – 0.32 – 0.5 – 0.75 – 1 – 1.4 – 2 – 2.8 – 3.5 WORKING TEMPERATURE: -40 ÷ +80 °C

COMPRESSION RATIO (Po : P2): max 1 : 8; see Tab.5.3e FLUID VISCOSITY RANGE: 10 ÷ 400 cSt RECOMMENDED VISCOSITY: 36 cSt
FLUID CONTAMINATION DEGREE:

class 21/19/16 according to ISO 4406/99

BODY MATERIAL: – carbon steel shell painted with a black rust inhibitor coat – stainless steel AISI 316L

FILLING VALVE MATERIAL (internal screw):

– galvanized carbon steel in compliance with Directive 2002/95/CE (RoHS) to resist to corrosion

– stainless steel AISI 316L

DIAPHRAGM MATERIAL:

– P = Nitrile rubber (NBR)
– Y = Epichlorohydrin (ECO) – B = Butyl (IIR)
– V = Fluorocarbon (FKM)

See Table 5.3c and /or Chapter 1.5

FILLING VALVE CONNECTION: FLUID PORT CONNECTION:

See Table 5.3e
FLOW RATE: see Table 5.3e

WEIGHT: see Table 5.3e

– M28 x 1.5
– without and closed – internal thread: