CENTRIC WAFER BODY
BUTTERFLY VALVE
Series 1000W
A centric wafer body butterfly valve is a compact, quarter-turn flow control valve where the disc shaft is centered (concentric) with the valve body, designed to sit between pipe flanges (wafer style) for simple installation, offering low torque and cost-effective flow regulation
1. STEM BUSHING:
STEM Precision double “D” disc to stem connection drives the disc without the need for screws or pins. The close tolerance, double “D” connection that drives the valve disc is an exclusive feature of the Pascal valve.
Disassembly of the Pascal stem is just a matter of pulling the stem out of the disc.
2. STEM RETAINING :
The stem is retained in the body by means of a unique stainless steel Spirolox retainil 2 ing, manufactured from stainless steel as standard
3 . Top plate drilled to fit iso 5211 dimensions. All handles, gear operators and pneumatic actuators are designed to mount directly.
4. STEM BUSHING :
An upper stem bushing, retained by a stainless steel ring, is provided to absorb actuator side thrusts and is PTFE as standard.
5. STEM SEAL:
Double “U” cup seal design is self-adjusting and gives positive sealing in both directions. Keeps environmental contaminants from entering the stem bore.
6. BODY:
One piece wafer or lug style allows for ease of assembly and maintenance.
7. SEAT:
Pascal’s Replaceable tongue and groove seat design provides complete isolation of flowing media from the body. The seat also features a moulded o-ring which eliminates the need of flange gaskets.
8. DISC/STEM:
One piece design. The disc edge is spherically machined and hand polished to produce a bubble tight shut off, minimum torque, and longer seat life. For erosion and abrasion resistance
Design & Manufacturing Standards :
API 609/BS EN-593/IS13095/ ASME B16.5/ ISO 7005
Testing Standard :
API 598/ API6D/ BSEN 12266-1
Valve face to face Dimension:
Category A API 609/ IS13095/ EN593/ ISO5752Tab5
TOP Flange Drilling:
ISO 5211
Class 150, BS10
Tab D&E, IS6392, Tab 11/17, JIS 5K/10K
Flang Standard:
DIN EN 1092-PN6, PN10, Class 150, BS10
Tab D&E, IS6392, Tab 11/17, JIS 5K/10K
TOP Flange Drilling:
ISO 5211
Flang Standard:
DIN EN 1092-PN6, PN10, Class 150, BS10
Tab D&E, IS6392, Tab 11/17, JIS 5K/10K
BODY: Cast Iron ASTM A126 Class B IS 210 FG 260, Ductile Iron ASTM A 395 (60-40-18), WCB (CS) ASTM A 216, Stainless Steel (CF8M/CF8) ASTM A 351M/351.
DISC: Cast Iron ASTM A126 Class B IS 210 FG 260, Ductile Iron ASTM A 395 (60-40-18), WCB (CS) ASTM A 216, Stainless Steel (CF8M/CF8) AST 351M/351 Alluminium Bronze, Duplex, Super Duplex (*DISC also available with Rubber Lining in EBBONITE/EPDM/NBR/NYLON/HYPLON (with Gurranted Spark Test Pass)
SEAT: EPDM/White EPDM (FOOD GRADE) BUNA-N/White- BUNA N (Food Garde) (NITRILE – NBR) VITON, HYPLON, BUTYLE, SILICON, NEOPRENE, NATURAL RUBBER.
Special Material are also work on request for Body/Disc/Stem/ Seat.
STEM: Stainless Steel ASTM A 479 TYPE 410 Stainless Steel ASTM A 276 TYPE 316 Stainless Steel ASTM A 276 TYPE 304 Duplex, Super Duplex, Monel, Bronze. any other
STEM BUSHING : PTFE, ACETAL .
OIL SEAL (Stem Seal) : EPDM
WASHER: SS304.
RETAINING CIRCLIP : SPRING STEEL
Note : All Body and Disc are IC Cast from 1.5″(DN40) To 24″ (DN600) Available. any other Special Material are also work on request for Body/Disc/Stem/ Seat.
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