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Fig. 4925 - Butterfly Valve Fully Lugged

Verified by manufacturer 1 month ago

DN50: Fig.4925

Hattersley Variant:

A fully-lugged, lever (Fig. 4925) or gearbox (Fig. 4925G) operated butterfly valve.

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Application

Suitable for Medium: Group 2 liquids.

Description

A fully-lugged, lever (Fig. 4925) or gearbox (Fig. 4925G) operated butterfly valve.


Features and benefits:

  • Robust, ductile iron valve bodies for long service life.
  • Stainless steel disc for improved strength and a wide range of applications.
  • Suitable for wide temperature range (DN50–300 - -10°C to 110°C).
  • Fully lugged for secure installation.
  • Rated PN25 for higher pressure applications.
  • Lever (4925) and Gearbox (4925G) options available.
  • Extended size range for application requirements.

General information

Color

Blue

Guidance for specification option:

Body, shaft covering, lever and handwheel.

Yellow

Silver

Guidance for specification option:

Stainless steel shaft and disk.

Black

Guidance for specification option:

NBR O-ring.

Material

Cast iron

Guidance for specification option:

Gearbox.

Length

Bespoke

Width

Bespoke

Height

Bespoke

Uniclass

Pr_65_54_95_08 Butterfly valvesPrimary
Pr_65_54_33_35 Gas butterfly valves

Specification data - Butterfly valves

Standard

To BS EN 593: 2009, BS EN 558, ISO 5211-2001 and BS EN 1092-2.

DN rating

DN50.

Manufacturer guidance

Nominal.

PN rating

Temperature: -10 to +120°C: 25 bar.

Manufacturer guidance

Test and inspection standard: BS EN 12266-1.

Working conditions

-

Maximum working pressure

Above 16 bar.

Materials

-

Body

Ductile iron.

Guidance for specification option:

  • DI (EN-GJS-400-15) to ASTM A536 65-45-12: DN50 to DN300.
  • To EN-GJS-450-10: DN350 to DN600.

Shaft

Stainless steel type 431.

Guidance for specification option:

  • DN50 to DN300.
  • To ASTM A276 431.

Manufacturer guidance

  • Pin: Stainless steel type 431 to ASTM A276 431 (DN50 to DN300).
  • Pin: Stainless steel type 630 to ASTM A564 630 (DN350 to DN600).
  • Top cap and bolt: Carbon steel to ASTM A194 Grade 2H.

Disc

Stainless steel type 304.

Guidance for specification option:

To ASTM A351 CF8.

Seat

Ethylene propylene diene monomer (EPDM).

Guidance for specification option:

  • O-ring: NBR.
  • Short and long bushing: Aluminium bronze to ASTM B148-952A.

Operation

-

Manual

Lever.

Guidance for specification option:

Fig. 4925: Malleable iron to ASTM Grade 32510.

Dimensions

138 x 65 x 43 x 125 x 32 x 216 mm.

Guidance for specification option:

a° = 45°.

Manufacturer guidance

  • Lever: Nominal A x B x C x ØD x H x L.
  • Geared: Nominal A x B x C x ØD x ØDD x L1 x L2.

Flow capacity

91 Kv.

Thread size

4 x M16.

Manufacturer guidance

Number x thread size.

Sustainability data

Material

Cast iron

Guidance for specification option:

Gearbox.

Recyclability

Recycle locally

Expected Life

20 year

Literature

CPD Leflet

CPD Leflet

General Valves Catalogue

General Valves Catalogue

Hattersley Valves Product Directory

Hattersley Valves Product Directory

Fig. 4925 - Butterfly Valve Fully Lugged - TM65-HATTERSLEY-FIG. 4925-DN50

Fig. 4925 - Butterfly Valve Fully Lugged - TM65-HATTERSLEY-FIG. 4925-DN50

Fig. 4925 - Butterfly Valve Fully Lugged - TM65-HATTERSLEY-FIG. 4925-DN65

Fig. 4925 - Butterfly Valve Fully Lugged - TM65-HATTERSLEY-FIG. 4925-DN65

Fig. 4925 - Butterfly Valve Fully Lugged - TM65-HATTERSLEY-FIG. 4925-DN80

Fig. 4925 - Butterfly Valve Fully Lugged - TM65-HATTERSLEY-FIG. 4925-DN80

Fig. 4925 - Butterfly Valve Fully Lugged - TM65-HATTERSLEY-FIG. 4925-DN100

Fig. 4925 - Butterfly Valve Fully Lugged - TM65-HATTERSLEY-FIG. 4925-DN100

Fig. 4925 - Butterfly Valve Fully Lugged - TM65-HATTERSLEY-FIG. 4925-DN125

Fig. 4925 - Butterfly Valve Fully Lugged - TM65-HATTERSLEY-FIG. 4925-DN125

Fig. 4925 - Butterfly Valve Fully Lugged - TM65-HATTERSLEY-FIG. 4925-DN150

Fig. 4925 - Butterfly Valve Fully Lugged - TM65-HATTERSLEY-FIG. 4925-DN150

Case studies

Bellatrix Bio Medical Campus

Bellatrix Bio Medical Campus

Leadenhall

Leadenhall

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