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899/892 Series
 Split Wafer Design
General Service for food and beverage, chemical/petro chemical processing, powered and utilities, pulp and paper.
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SPECIFICATIONS
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FEATURES & BENEFITS
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- Size: 1"-12"
Wafer(899) or Lug(892) style bodies
- Construction: Full cut disc 150psi
PTFE or elastomer covered 100psi
Undercut disc 50psi
- Temperature Range: Dependent on material.
- Operator Options: 5 and 10 position handle,
Gear operator
Electric or Pneumatic Actuators.
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- Total encapsulation of the seat and disc/stem provides the ultimate in contamination free service.
- Four redundant seals
- Easy seat and disc replacement
Stem design prevents blow-out hazard
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MATERIALS
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- Body - Lug style has drilled and tapped lugs meeting ANSI 125/150 flange standards. Two-piece body allows ease of seat replacement. Lug body standard with Ductile Iron. Wafer body standard with Ductile Iron also available in Aluminum and Stainless Steel
- Top Plate Standard ISO 5211 - accommodates handles, gear operators, electric and pneumatic actuators.
- Disc/Stem - The one-piece disc/stem is manufactured as standard in grade 255 stainless steel. Type 255 stainless has almost twice the strength of type 316 stainless steel. This eliminates shaft twisting and water hammer damage while allowing a thin disc design which increases CV ratings. Type 255 stainless provides four times the corrosion resistance as 316 stainless steel. The disc can be encapsulated with various rubber compounds and other chemically compatible materials. Undercut disc for dry powder applications are also available.
- Stem Bushing - Composed of full strength, corrosion resistant ertalyte, stem bushings absorb operator side thrust. Top bushing comes standard in all valves, while bottom bushing comes with all valves sizes 4"-12".
- Stem-Seal - A third seal ensuring leak resistance externally or internally for vacuum or pressure service. Matches seat materials: Buna-N, EPDM, or Viton® .
- O-Seal - Two O-Seals give a sure secondary seal as the O-seal becomes part of the body and encircles the stem before entering the seat and disc area. O-seals are also located at top and bottom of stem entry to form an absolute secondary seal. Seals are of the same material except for silicone.
- Seat - The seat fully encapsulates the valve body thereby preventing corrosion of the body or contamination of the flowing product. The only wetted parts are the seat and disc. Seats are available in EPDM (food grade), black Nitrile (food grade), white Nitrile, PTFE/Buna-N, PTFE/EPDM, Silicone, Viton®.
- Hub Seal or Primary Seal - Occurs when contact is made between the disc hub and the flat surface of the seat. Hub/seat seals prevent product from attacking stem or body.
- Flange Seal - Sealing O-Ring of resilient seat which provides an absolute seal to all flanges within specifications. No other gaskets required.
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PART NUMBER
AABBBCCCDDDEEE
AA=Size, BBB=Series,
CCC=Body/Disc Trim, DDD=Seat,
EEE=Operator
Size (inches): 01, 1.5, 02, 2.5, 03,
04, 05, 06, 08, 10, 12
Series:
899 - Split body wafer style
892- Split body lug style
Body/Disc Trim:
828 - Aluminum/No Coat/Stainless
497 - Aluminum/EPDM/Stainless
437 - Aluminum/Buna-N/Stainless
788 - Aluminum/Teflon/Stainless
755 - Stainless/No Coat/Stainless
435 - Stainless/Buna-N/Stainless
495 - Stainless/EPDM/Stainless
705 - Stainless/Teflon/Stainless
822 - Ductile Iron/No Coat/Stainless
712 - Ductile Iron/No Coat/4140 Steel
434 - Ductile Iron/Buna-N/Stainless
498 - Ductile Iron/EPDM/Stainless
508 - Ductile Iron/Teflon/Stainless
Add "U" for undercut disc
Seat:
514 - EPDM (White)
515 - EPDM (Black)
525 - Chlorobutyl
540 - Vitron
561 - Silicone
650 - PTFE/EPDM
652 - PTFE/Buna-N
700 - Nitrile (All Season Black)
701 - Nitrile (All Season White)
Operator:
H10 - 10 position ductile iron
handle
H09 - 10 position stainless handle
HGI - Gear operator
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Repair Parts
