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The double flanged design is suitable for high pressure loading and is excellently suited for use in haevy industry, shipbuilding and waterworks.

Flanged Butterfly Valve R41

(Double Flange Butterfly Valve)

(Double Flange Resilient Butterfly Valve)

(Centerline Flanged Resilient Butterfly Valve)

(Concentric Flanged Resilient Butterfly Valve)

Rubber Lined / EPDM Coated Flanged Butterfly Valve)

Long Pattern Double Flange Butterfly Valve


Standard Applicable
Face-to-face:
EN 558 Series 13

ISO 5752 Series 13
API 609 Table 2c
BS 5155 short
NF E 29-305.1

Flange accommodation:
DIN 2501 PN 6/10/16/25
ANSI B 16.5, Class 150
MSS SP44 Class 150
AWWA C 207
AS 2129 Table D and E
BS 10 Table D and E
JIS B 2211-5 K
JIS B 2212-10 K
Flange Surface Design: DIN 2526, Form A-E, ANSI RF
Top flange:  EN ISO 5211  NF E 29-402
Marking:  DIN EN 19
Tightness check:
EN 12266 (Leakage Rate A)
ISO 5208, Category 3
API 598 Table 5
ANSI B 16-104, Class VI

Specification
Pressure Rating: PN6,10,16
Size Range:   DN50~DN2000
Seat Ring:    PTFE, EPDM, NBR, SILICON, VITON

Operator:   Lever, Gear, Electric, Pneumatic, Hydraulic
Materials:    Cast Iron, Cast Steel, Alloy Steel, Duplex Steel
Standard:  C22.8 (1.0460) / GP240GH (1.0619/GS-C25),
Low temperature: TSTE355 (1.0566)
High temperature:  16Mo3 (1.5415) / GS-22Mo4 (1.5419),13CrMo4-5 (1.7335) / GS-17CrMo55 (1.7357)
Stainless steel1:  .4401 / 1.4404 / G-X6CrNi18.9(1.4308),G-X6CrNiMo18.10 (1.4408)

Application: Steam, gases, hot water, thermal oil, process water, Water, Chemical Industry, ammonia etc.


The double flanged design is suitable for high pressure loading and is excellently suited for use in haevy industry, shipbuilding and waterworks.