posi-flate butterfly valves
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Design features for
reliable performance

A. ACTUATOR MOUNTING FLANGE: Flange is designed for direct actuator mounting.

B. RETAINING RING: Retaining ring simplifies bearing and seal removal and ensures positive bearing retention.

C. BEARINGS: Multiple bearings substantially reduce operating friction and torque requirements eliminating any metal-to-metal contact, thus preventing shaft galling and freezing.

D. SHAFT SEALS: O-ring shaft seals insure positive sealing under the most adverse conditions.

E. SHAFT: Corrosion resistant, high strength steel shaft is easily replaceable.

F. SEAT O-RING SEAL: O-ring provides long lasting positive seal of seat inflation pressure.

G. MATERIAL SEAL: Land seal prevents material contamination of seat o-ring seal.

H. DISC/SHAFT: Integral disc and shaft with smooth, contoured surface provides minimum resistance to flow and reduces material buildup.

I. AIR INLET PORT: Oversized inlet port allows quick valve pressurization/
depressurization.

J. DISC: Smooth contoured surface assures extended seat life and disc is easily replaceable.

K. DISC SCREWS: Self-locking screws of high tensile steel provide strong link between disc and shaft, yet allow easy disassembly.

L. HOUSING: Rugged one-piece body fits standard 125/150 class ANSI flat-faced flanges and PN 10 metric flanges.

M. HOUSING GASKET: Die cut elastomeric gasket assures leakproof housing.

N. HOUSING BOLTS: High strength steel bolts maintain structural integrity of housing under the most adverse conditions.

O. SPLIT HOUSING: Rugged two-piece body fits standard 125/150 class ANSI flat-faced flanges and PN 10 metric flanges. Minimizes assembly time and allows for integral shaft and disc.

P. RESILIENT SEAT: Easily replaceable, the inflatable molded seat has a smooth contour locking design to minimize stress and hold the seat in place, eliminating any need for flange gaskets. 

 

Series 585 Cutaway 

Series 585
Single piece housing with two piece disc and shaft. Sizes 4" (100mm)* to 24" (600mm).

* Series 585 4" valve features a split housing for ease of assembly.

Series 586 Cutaway 

Series 586
Split housing with one piece disc and shaft. Sizes 2" (50mm) to 24" (600mm). 


Inflatable Seated Butterfly Valves
Heavy Duty Series 585, 586
Bulletin - English


膨胀式蝶阀
重载系列
585, 586
公告 - 中文

Vannes Papillon à Siège Gonflable
Usage Sévère
Séries 585, 586
Bulletin - Français

Válvula Borboleta
com Sede Serviço
Pesado Inflável
Séries 585 e 586
Bulletin - Portuguese

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