Series 140 – 141 – 143
Item	Description	Materials
		140	141	143
1	Body	B16 Brass	SA479-316 SS	SA479-316 SS
2	Ball	440 SS	440 SS	440 SS
3	Disk Holder	B16 Brass	B16 Brass	SA479-316 SS
4	Name Plate	Stainless	Stainless	Stainless
5	Spring Plate	B16 Brass	B16 Brass	SA479-316 SS
6	Pressure Screw	B16 Brass	B16 Brass	SA479-316 SS
7	Pull Ring	Plated Steel	Plated Steel	Stainless
8	Spring Post	B16 Brass	B16 Brass	SA479-316 SS
9	Hood	B16 Brass	B16 Brass	SA479-316 SS
10	Lock Nut	B16 Brass	B16 Brass	SA479-316 SS
11	Spring	302 / 17-7 SS	302 / 17-7 SS	302 / 17-7 SS
12	Bonnet	B16 Brass	B16 Brass	SA479-316 SS
13	Lift Lever	Plated Steel	Plated Steel	Plated Steel
14	Lever Pin	B16 Brass	B16 Brass	Plated Brass
15	Seal Wire	Steel / Lead	Steel / Lead	Stainless / Lead

Series 140 – 141 – 143
Orifice	Area	Inlet	“A” Dimension		Max. Set Pressure
			Pull Ring	Lift Lever
“A”	.062 In.^2	1/4”	3-3/8”	3-1/2”	450 P.S.I.
		3/8”	3-3/8”	3-1/2”
		1/2”	3-3/8”	3-1/2”
“B”	.119 In.^2	3/8”	3-3/4”	3-7/8”
		1/2”	3-3/4”	3-7/8”
		3/4”	3-3/4”	3-7/8”

Series 140 Part Numbers

140

BC

1

M

7

N

1

125

Series

Desc.

Orifice x Inlet

Connection

Seating

Cap

Service

Options

Set

140

Brass

AA-

0.28 x 1/4”

1-

NPT Male

M-

Metal

1-

Lift Lever

K-

ASME VIII Air/gas

1-

None

Ex.125

141

Stainless / Brass

AB-

0.28 x 3/8”

2-

NPT Female

V-

Viton

7-

Pull Ring

N-

Non-code Air/gas

3-

O2 Cleaned

143

Full Stainless

AC-

0.28 x 1/2”

3-

BSPT Male

T-

Non-code Steam

4-

API Seating

BB-

0.39 x 3/8”

4-

BSPT Female

5-

O2 Cleaned / API Seating

BC-

0.39 x 1/2”

BD-

0.39 x 3/4”

Series 140 - 141 – 143 Capacity Air SCFM
Set psig		10	20	30	40	50	60	70	80	90	100	150	200	250	300	350	400	450
“A” orifice SCFM		26	35	44	54	64	75	85	95	105	115	166	217	268	319	369	420	471
“B” orifice SCFM		41	56	71	87	104	120	136	153	169	185	267	349	431	513	594	676	758
Series 140 – 141 - 143 Capacity Air Nm3/hr
Set barg		1	2	3	4	5	6	7	8	9	10	11	12	15	20	25	30	31
“A” orifice Nm3/hr		51	73	99	124	148	173	199	224	248	274	299	323	399	523	649	775	800
“B” orifice Nm3/hr		82	117	158	199	238	279	319	360	399	440	481	522	642	843	1045	1247	1286
Set pressures not limited to this chart.  Specify when ordering. Capacities are at 3 psig or 10% (whichever is greater) over set pressure.