FOAM

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The tank heads shall be 2 to 1 ellipsoid to ensure strength while reducing overall tank weight.

All tank openings larger than 1 inch (2.5 cm) diameter shall be divided to prevent bladder blow-out. There shall be a water channel, permanent and non-movable, between the water inlet opening and water drain opening to establish a water path between the tank shell interior and the bladder.

The tank interior shall have all welds and edges ground smooth. It shall be cleaned, san blasted to a near white surface, and immediately coated with an epoxy sealer. The tank data plate shall be of material compatible with the tank shell and must be seal welded with appropriate procedure and material to the tank. (This ensures that the data plate will reflect the overall condition of the tank and that no corrosion occurs undetected behind the data plate.) The data plate shall contain a minimum ASME code stamp: year of manufacture, working pressure, board number, material thickness, temperature, and type of head. The tank shall also have a label specifying the type of foam concentrate the system was designed to use, the quantity of concentrate, and any other pertinent warnings.

The vertical tank assembly shall be supported by a continuous skirt of a diameter equal to the tank with four feet drilled for anchoring. The horizontal tank assembly shall be supported by two saddles permanently welded to the tank and drilled for anchoring. These supports provide maximum stability and a maximum amount of bearing area which protects against horizontal and vertical forces such as vibration and shifting.

Lifting lugs shall be substantial welded tank attachments with a clear hole not less than 2" (5 cm) in diameter.

The tank shall contain a flexible bladder of BUNA-N with nylon reinforcement, or other materials teste by Underwriters Laboratories for compatibility with the agent to be used.

The bladder material shall have a Mullen burst pressure in excess of 800 psi (55.2 bar). The bladder material shall be no less than 0.05" (1.27 mm) thick and shall be constructed to conform with the inside tank dimensions.

Both the vertical and horizontal tank assemblies shall contain porous center tubes of P.V.C. or other material compatible with the agent, with holes of no more than ¾" (19 mm) diameter. The vertical tank assembly shall contain a single perforated center tube. The horizontal tank assembly shall contain both vertical and horizontal perforated center tubes connected with a cross fitting of compatible material.

The following shall be assembled to each tank: a bladder drain/fill valve, bladder vent/fill valve, tank shell drain valve, and tank shell vent valve. These valves shall be 1" (2.5 cm), ¼-turn ball valves with bronze bodies, hard chromium-plated bronze ball, bronze stem, stainless steel locking nut and handle, and high performance teflon seats and stuffing box ring. Each valve shall have a nameplate secured to it depicting the valve name and operating position. Also, the valve shall have a ring pin and chain attached for securing the valves in the operating position. The valve names shall coincide exactly with those in the tank instruction manual. All valves shall be piped out from under the tank for easy access. All pipe and fittings shall be Schedule 40 ASTM B-43 and B-62 or B-584 bronze respectively. The bladder drain/fill piping shall include a tee with ½" plug for future sight gauge connection.

The tank exterior shall be prepared and finished in accordance with the appropriate (enamel or epoxy) Ansul specification or equivalent.

A printed filling and maintenance manual shall be supplied with each tank. The manual shall contain a system schematic, installation instructions, initial fill procedures, major and minor refill procedures, sight gauge use instructions, service and repair procedures, field inspection manual, and the manufacturer's warranty.

When ordering Bladder Tanks please specify the following:

• Type of tank required - horizontal or vertical
• Size of tank
• Exterior finish of tank
• Whether required for salt water environment
• Any other options required

Vertical Bladder Tank
Available in 50-1500 gallon sizes

Capacity		Diameter		Dimensions												Weight
gal.	L	in.	cm	A		B		C		D		E		F		lbs.	kg
				in.	cm	in.	cm	in.	cm	in.	cm	in.	cm	in.	cm
50	190	24	61	64	163	57	145	24	61	7.5	19	20	51	19	48	470	215
100	379	24	61	90	229	82	208	52	132	8.5	22	19	48	19	48	700	320
150	568	30	76	90	229	82	208	49	125	10.5	27	21	53	21	53	980	445
200	757	30	76	108	274	100	254	68	173	10.5	27	22	56	21	53	1290	585
300	1136	36	91	112	284	104	264	70	178	10.5	27	25	64	24	61	1550	705
400	1514	48	122	92.5	235	84.5	215	55	140	10.5	27	32	81	30	76	2250	1020
500	1893	48	122	105.5	268	97.5	248	73	185	10.5	27	32	81	30	76	2500	1134
600	2271	48	122	118	300	110	279	87	221	10.5	27	32	81	30	76	2570	1165
700	2650	48	122	132	335	124	315	88	224	10.5	27	32	81	30	76	2840	1288
800	3028	48	122	146.5	372	138.5	352	95	241	10.5	27	32	81	30	76	3200	1451
900	3407	48	122	160.5	408	152.5	387	106	269	10.5	27	32	81	30	76	3400	1545
1000	3785	48	122	174.5	443	166.5	423	116	295	10.5	27	32	81	30	76	3600	1635
1100	4164	60	153	144	366	136	346	90	229	18.5	47	37	94	36	91	3750	1701
1200	4542	60	153	153	389	145	368	96	244	18.5	47	37	94	36	91	3950	1792
1300	4921	60	153	162	412	154	391	104	264	18.5	47	37	94	36	91	4140	1878
1400	5300	60	153	171	435	163	414	110	279	18.5	47	37	94	36	91	4350	1973
1500	5678	60	153	180	458	171	435	117	297	18.5	47	37	94	36	91	4530	2054

Horizontal Bladder Tank
Available in 100-3000 gallon sizes

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