Type P "Dish Shaped" Diaphragm

General Description

Type P Diaphragm This diaphragm type, commonly referred to as dish-shaped, has a sidewall that slopes gradually from the cylinder to the piston. This diaphragm is designed to be flexed in both directions to its full height. It may be double-coated to take pressure in both directions. Due to its wide convolution and gradual sidewall slope, the total travel and ability to withstand high pressures are limited. The effective pressure also varies through its stroke.

Type P Figure 1

Dimensions and Tolerances

	Inches	mm	Inches	mm	Inches	mm	Inches	mm
Cylinder Diameter	1.00-2.50	25-64	2.51-4.00	64-102	4.01-8.00	102-205	8.01 & up	205 & up
Height	See available sizes table
Cylinder Diameter	Tolerances on Cylinder Diameter and Piston Diameter are ± 0.010" per inch (0.254 mm) of diameter but the tolerance will be no less than ± 0.010" (0.254 mm), or greater than ± .060" (1.52 mm)
Piston Diameter
Head & Flange Thickness	.017 ± .005	.43 ± .13	.024 ± .005	.61 ± .13	.035 ± .005	.89 ± .13	.045 ± .007	1.14 ± 0.18
Wall Gauge	.017 ± .005	.43 ± .13	.024 ± .005	.61 ± .13	.035 ± .005	.89 ± .13	.045 ± .007	1.14 ± 0.18
Flange Radius	.063	1.60	.094	2.39	.125	3.18	.125	3.18
Flange Diameter	Cyl. Diam. + 1.00	Cyl. Diam. + 25.40	Cyl. Diam. + 1.500	Cyl. Diam. + 38.10	Cyl. Diam. + 2.00	Cyl. Diam. + 50.80	Cyl. Diam. + 2.00	Cyl. Diam. + 50.80

Available Sizes

Dia•Com Part No,	Cylinder Diameter		Piston Diameter		Height		Gauge Approx.		Convolution Width		Effective Pressure Area		Maximum Half-Stroke
Dia•Com Part No,	(Inches)	(mm)	(Inches)	(mm)	(Inches)	(mm)	(Inches)	(mm)	(Inches)	(mm)	(Inches)	*	(Inches)	(mm)
P-106-16	1.06	27	1.00	25	0.16	4	.017	0.40	0.03	0.8	0.83	5.4	0.16	4.1
P-134-39	1.34	34	0.91	23	0.39	10	.017	0.40	0.22	5.5	0.99	6.4	0.39	9.9
P-144-40	1.44	37	0.69	18	0.40	10	.010	0.30	0.38	9.5	0.89	5.7	0.40	10.2
P-206-50	2.06	52	1.06	27	0.50	13	.060	1.50	0.50	12.7	1.91	12.3	0.50	12.7
P-250-50	2.50	64	1.50	38	0.50	13	.060	1.50	0.50	12.7	3.14	20.3	0.50	12.7
P-275-50	2.75	70	1.75	44	0.50	13	.060	1.50	0.50	12.7	3.97	25.6	0.50	12.7
P-275-53	2.75	70	1.75	44	0.53	13	.025	0.60	0.50	12.7	3.97	25.6	0.53	13.5
P-288-37	2.88	73	1.88	48	0.37	9	.030	0.80	0.50	12.7	4.45	28.7	0.37	9.4
P-300-50	3.00	76	2.00	51	0.50	13	.060	1.50	0.50	12.7	4.91	31.7	0.50	12.7
P-325-52	3.25	83	1.77	45	0.52	13	.025	0.60	0.74	18.8	4.95	31.9	0.52	13.2
P-400-57	4.00	102	3.00	76	0.57	14	.060	1.50	0.50	12.7	9.62	62.0	0.57	14.5
P-400-60	4.00	102	2.75	70	0.60	15	.025	0.60	0.63	15.9	8.94	57.7	0.60	15.2
P-797-62	7.97	202	6.22	158	0.62	16	.080	2.00	0.88	22.2	39.52	254.9	0.62	15.7
P-1050-141	10.50	267	8.12	206	1.41	36	.093	2.40	1.19	30.2	68.04	439.0	1.41	35.8
*Metric effective pressure area shown in square centimeters.

Contact us for Type P Diaphragms.

Dia•Com is a leading international provider of innovative, cost-effective molded diaphragm solutions critical to the operation of essential systems and equipment in industrial, automotive, aerospace, medical instrumentation, and food and water processing applications. The company's reputation for excellence is based on superior quality in the design, manufacture and application of its high-performance, state-of-the-art, fabric-reinforced and homogeneous elastomeric diaphragm seals.