Detailed explanation of WILDEN Wilton diaphragm pump coding system

Air System/Model-Inlet

A or P.025 = 1/4"

P.050 = 1/2"

A,T or P1 = 1/2"

A,T or P2 = 1"

A,T,P or PV4 = 1 1/2"

A,T,P or PV8 = 2"

A,T,P or PV15 = 3"

A,T20 or VC4 = 4"

VC6 = 6"

VC8 = 8"

Wetted part

A = aluminum alloy

G = carbon-filled acetal

H = Nickel-based alloy

K = polyvinylidene fluoride

P = polypropylene

S = stainless steel

T = Teflon®

W = cast iron

air cavity

A = aluminum alloy

C = Covered with Teflon®

G = Carbon-filled acetal (A.025, P.025, A1, T1)

K = Polyvinylidene fluoride (only for P.050)

L = Acetal

M = medium carbon steel (A4, T4)

N = Nickel plated

P = polypropylene

S = stainless steel

V = Halar coating

W = cast iron

Y = Nylon

Intermediates

A = aluminum alloy

C = Covered with Teflon®

G = carbon-filled acetal

K = polyvinylidene fluoride

L = Acetal

N = Nickel plated

P = polypropylene

S = stainless steel

Y = Nylon

air valve

A = aluminum alloy

B = Brass

C = Covered with Teflon®

D = Brass W (comes with oil bottle)

L = Acetal

N = Nickel plated

P = polypropylene

Q = conductive plastic

S = stainless steel

A = Oil-free lubrication

diaphragm

BN = Butadiene Rubber®

ET = Teflon® composite membrane

FG = Sani-Flex™

ND = ternary rubber

NE = Neoprene

PU = polyurethane

TF = Teflon®

TX = Teflon® (with outer splint) A.025, P.025, P.050

VT = Viton

WF = Wil-Flex™

valve ball

BN = Butadiene Rubber®

FG = Sani-Flex™

FV = Food Grade Teflon®

ND = ternary rubber

PU = polyurethane

SS = stainless steel

TF = Teflon®

VT = Viton

WF = Wil-Flex™

valve seat

A = aluminum alloy

BN = Butadiene Rubber®

FG = Sani-Flex™

H = Nickel-based alloy

K = polyvinylidene fluoride

L = Acetal

M = medium carbon steel

ND = ternary rubber

NE = Neoprene

P = polypropylene

PU = polyurethane

S = stainless steel

T = Teflon® (PFA)

VT = Viton

WF = Wil-Flex™

Super elastic diaphragm

UB = Buna-N Rubber®

UE = Elastomer®

UN = Neoprene

UV = Fluorinated rubber

Valve seat O-ring

BN = Butadiene Rubber®

CR = Chemraz(UP)

FG = Sani-Flex™

FS = Fluoride seal (metal pump)

ND = Tri-rubber®

PU = polyurethane

TF = Teflon® PTFE (metal pump)

TV = Viton lined with Teflon®

WF = Wil-Flex™