SPADES
Spades and Ring Spacers are basically the same as Spectacle Blinds, except that both are not attached to each other.
Spades and Spacers be applied in systems where maintenance is often not necessary, or in applications with large pipe sizes. Depending on the flange size and the Pressure Class, Spades can weigh hundreds of pounds. To prevent unnecessary weight to a flange connections, usually will be chosen not for a Spectacle Blind, but for 2 separate parts
RING SPACER
So as for the Spectacle Blind already described, maintenance on a pipesystem can be a reason to temporarily replace a Ring Spacer for a Spade. By loosening of all bolts, and half of the bolts temporarily remove, the Spade or Spacer can be placed. After replacing the gaskets (new gaskets are to recommend), the bolts can be re-assembled and tightened.
A small problem is that we basically can not see, or a Spade or a Spacer mounted between the flanges. Therefore the handles are often specially marked, or both have a different design; a customer often provides its own specification.
What should never lack is, that in the handle, the diameter and the Pressure Class of a Spade or Spacer is engraved; this applies also for the Spectacle Blind.
Standard
1.ASME
ANSI B16.5,ASME B16.5,ASME B16.47,ASME B16.36,ASME B16.48,AWWA C-207,API 605,API590,MSS SP44,API6A
2.DIN
DIN2527,DIN2566,DIN2573,DIN2576,DIN2627,DIN2628,DIN2629,DIN2630,DIN2631,DIN2632,
DIN2633,DIN2634,DIN2635,DIN2636,DIN2637,DIN2638,DIN2641,DIN642,DIN2655,DIN2656,
DIN2673,DIN28030,DIN28031,DIN28032,DIN28036,DIN28038,DIN86029,DIN86030,DIN11864-2
3.EN
EN1092-1,EN1759-1
4.BS
B.S 3293,B.S 4504,B.S 10
5.ISO
ISO 7005-1
6.AS
AS2129,AS4087, AS, NZS 4331.1
7.JIS
JIS B2220,JIS B2238,JIS B2290,JIS G3443-2,JPI-7S-15,JPI-7S-43
8.UNI
UNI2253,UNI2254,UNI2276,UNI2277,UNI2278,UNI2280,UNI,2281~2286,UNI6091~6094
Size
1/8”~160”,DN10~DN4000
Pressure
PN1,PN2.5,PN6,PN10,PN16,PN25,PN40,PN64,PN100,PN160,PN250,PN320,PN400
CLASS75,CLASS150,CLASS300,CLASS400,CLASS600,CLASS900,CLASS1500,CLASS2500
2K,5K,10K,16K,20K,30K,40K
Specification
Plate Flange,Slip-On Welding Flange,Welding Neck Flange,Threaded Flange,Socket Welding Flange,Blind Flange,Long Welding Neck Flange,Lap Joint,Loose Plate Flange,Orifice Flange,Reducing Flange,Integral flange,Figure-8,Paddle Blank,Paddle Spacer,Specatcle Blind,Squre Flange,Reducing Flange, Orifice Flange
Material
1.Carbon Steel
A105,A350 LF1,A350 LF2,A350 LF3
2.Stainless Steel
ASTM SA-182/SA-182M F304,F304H,F304L,F316,F316H,F316L,F321,321H,F316Ti,317,F317H,F347,F904L,F310
3.Duplex Stainless Steel
F51,F53,F60
4. Hastelloy
Hastelloy B,Hastelloy B-2,Hastelloy B-3,Hastelloy C-4,Hastelloy C-22,,Hastelloy C-276,Hastelloy C-2000,Hastelloy G-35,Hastelloy G-30,Hastelloy N,Hastelloy S,Hastelloy X
5. Haynes
Haynes 188,Haynes 230,Haynes 556
6. Incoloy
Incoloy 020,Incoloy 800,Incoloy 800H,Incoloy 800HT,Incoloy 825,Incoloy 925,Incoloy A-286,
7. Inconel
Inconel 600,Inconel 601,Inconel 617,Inconel 625,Inconel 718,Inconel X750
8. Monel
Monel 400,Monel 401,Monel 404,Monel K-500
9. Nickel
Nickel 200,Nickel 201
