The mechanical parts that complete a fixed suppression system beyond the cylinder, valve and nozzle: manifolds that combine multiple cylinders into one discharge path, actuator assemblies that convert the release signal into mechanical action, pressure switches that confirm discharge back to the panel, and the associated fittings.
Every one of these is matched to the system design. Pressure switches in particular are the panel's proof that discharge actually occurred, so a substitution changes what the system reports. Order from the system drawings.

Kidde Fenwal
Kidde Fenwal WK-152356-000 Nut-Hex, 7/8, for 4 CL600 Flanges
Sale price$27.00
Regular price$32.40
Not in stock - available on backorder - lead time on request
Kidde Fenwal
Kidde Fenwal WK-283906-000 Valve Outlet Adapter, 2-1/2 (Availability Limited to Quantity on Hand)
Sale price$1,367.00
Regular price$1,640.40
Not in stock - available on backorder - lead time on request
Kidde Fenwal
Kidde Fenwal 90-140100-000 Kit, 1 1/2" ECS Valve Re Build. Includes 1 of Each of the Following: WK 242461 000 Safety Disc (1 1/2" Valve) WK 294500
Sale price$348.85
Regular price$418.62
Not in stock - available on backorder - lead time on request
Kidde Fenwal
Kidde Fenwal WK-699205-030 Male Elbow, 5/16 Flare X 1/8 NPT
Sale price$87.35
Regular price$104.82
Not in stock - available on backorder - lead time on request
Kidde Fenwal
Kidde Fenwal 81-994706-500 Kit, 1/2" Type I Valve Rebuild With: 81 902048 000 Safety Disc (White) and Washer WK 220034 000 Nut Safety Disc WK 932636
Sale price$516.85
Regular price$620.22
Not in stock - available on backorder - lead time on request
Kidde Fenwal
Kidde Fenwal 82-878737-000 Pressure Operated Control Head
Sale price$249.50
Regular price$299.40
Not in stock - available on backorder - lead time on request
Kidde Fenwal
Kidde Fenwal WK-196648-720 Bolt-Hex, 3/4 X 4-1/2, for 2-1/2 & 3 CL600 Flanges
Sale price$41.20
Regular price$49.44
Not in stock - available on backorder - lead time on request
Kidde Fenwal
Kidde Fenwal 85-220031-001 3 Way Directional Valve, 1 1/4 NPT, Carbon Steel, UL Listed for ECS 500 ADS Fluoro K, ECS 360 3M NOVEC 1230, ECS 500 3M
Sale price$12,397.95
Regular price$14,877.54
Not in stock - available on backorder - lead time on request
Kidde Fenwal
Kidde Fenwal 85-150200-000 Kit, 2" ECS, ADS Valve Re Build. Includes 1 of Each of the Following: 85 237429 001 Piston Assembly WK 566103 350 O Ring
Sale price$754.80
Regular price$905.76
Not in stock - available on backorder - lead time on request
Kidde Fenwal
Kidde Fenwal 85-220032-002 3 Way Directional Valve, 4 GVD, Carbon Steel, UL Listed for ECS 500 ADS Fluoro K, ECS 360 3M NOVEC 1230, ECS 500 3M NOVEC
Sale price$45,722.70
Regular price$54,867.24
Not in stock - available on backorder - lead time on request
Kidde Fenwal
Kidde Fenwal WK-263303-000 Schrader Valve, ADS & WHDR-OL
Sale price$31.60
Regular price$37.92
Not in stock - available on backorder - lead time on request
Kidde Fenwal
Kidde Fenwal 81-934808-000 Stainless Steel Lock-Out Valve, 3"
Sale price$38,603.25
Regular price$46,323.90
Not in stock - available on backorder - lead time on request
Kidde Fenwal
Kidde Fenwal 81-872360-000 Pneumatic Control Head, Tandem 6
Sale price$1,906.80
Regular price$2,288.16
Not in stock - available on backorder - lead time on request
Kidde Fenwal
Kidde Fenwal 85-237429-001 New Piston Assembly with O Rings for 2" ECS, ADS Valve
Sale price$694.20
Regular price$833.04
Not in stock - available on backorder - lead time on request
Kidde Fenwal
Kidde Fenwal 81-890010-000 CO2 Stop Valve, 3 Flanged Brass (Order Flanges Separately)
Sale price$20,799.70
Regular price$24,959.64
Not in stock - available on backorder - lead time on request
Kidde Fenwal
Kidde Fenwal 82-844346-000 Safety Outlet, 3/4 NPT 750-900 psi (51-62 Bars)
Sale price$227.75
Regular price$273.30
Not in stock - available on backorder - lead time on request
Kidde Fenwal
Kidde Fenwal 82-878758-000 Recharge Adapter, 2 ECS, ADS Valve
Sale price$4,604.80
Regular price$5,525.76
Not in stock - available on backorder - lead time on request
Kidde Fenwal
Kidde Fenwal 81-870123-000 CO2 Stop Valve, 1-1/2
Sale price$4,942.90
Regular price$5,931.48
Not in stock - available on backorder - lead time on request
Kidde Fenwal
Kidde Fenwal 81-870022-000 CO2 Stop Valve, 3/4
Sale price$2,482.00
Regular price$2,978.40
Not in stock - available on backorder - lead time on request
Kidde Fenwal
Kidde Fenwal WK-258426-000 Nut, Safety Disc (1-1/2" - 2-1/2" Valve) Retainer
Sale price$73.45
Regular price$88.14
Not in stock - available on backorder - lead time on request
Kidde Fenwal
Kidde Fenwal WK-202804-000 Retainer, Sleeve
Sale price$206.45
Regular price$247.74
Not in stock - available on backorder - lead time on request
Kidde Fenwal
Kidde Fenwal 81-967082-000 Discharge Indicator, 3/4" NPT (Brass)
Sale price$432.45
Regular price$518.94
Not in stock - available on backorder - lead time on request
Kidde Fenwal
Kidde Fenwal WK-220278-000 Schraeder Valve Core
Sale price$22.25
Regular price$26.70
Not in stock - available on backorder - lead time on request
Kidde Fenwal
Kidde Fenwal 85-100000-100 Control Head Monitor (for Retrofitting Existing Systems)
Sale price$410.25
Regular price$492.30
Not in stock - available on backorder - lead time on request