Crispin Valve M3, M5, M8, M10 User Manual

Midget Air Release Valves

• Vents trapped air
in hot water systems

• Vents air from cold
water, petroleum
products and many
other liquids with
varying specific
gravities

•

Ideal for automatic
priming of Vacuum
Primed Pumps

• Meets AWWA C-512

Valve

Function

C

rispin Midget Air Valves are chosen for use in venting
trapped air in hot water systems by being installed at the

high points of the line, thereby resulting in an increase of
the B.T.U. output. The Crispin Midget Air Valve is equally well
designed for venting air from cold water, petroleum products
and many other liquids of varying specific gravities. The Midget
is also ideal for automatic priming of vacuum primed pumps. A
vacuum check is available, if desired, for attachment to the
valve outlet to prevent air from re-entering the system

M SERIES

Midget Air Release Valves

With Stainless Steel Trim Standard

Model Information

Midget Valve Parts List

All Crispin Valves are

hydrostatically tested

at 150% of their

maximum working

pressure.

ORIFICE DIA. MAX WORKING PRESSURE

1/8” 50 PSIG
3/32” 85 PSIG
1/16” 150 PSIG
3/64” 200 PSIG
1/32” 300 PSIG

Note: Materials and Prices Subject to Change Without Notice

Orifice Sizing Information

Valve Inlet 3/8” 1/2” 3/4” 1”
Model No. M3 M5 M8 M10
NPT-Outlet 3/8” 3/8” 3/8” 3/8”
Height 5 9/16” 5 9/16” 5 9/16” 5 9/16”
Width 5” 5” 5” 5”
Weight 6lbs 7lbs 7lbs 8lbs

Crispin Valve, 600 Fowler Ave., Berwick, PA 18603 • 1-800-AIR-VALV • T: [phone] • F: [phone] • WWW.CRISPINVALVE.COM • [e-mail]

M

PART ITEM MATERIAL QTY/
NO. UNIT

1VALVE SEAT Stainless Steel 1

2 PLUNGER Viton 1

BUTTON

4VALVE LEVER Stainless Steel 1

5 SCREW (DRIVE) Stainless Steel 1

6 BALL FLOAT Stainless Steel 1

7HINGE PIN Stainless Steel 1

7A PIN CLIP Stainless Steel 1

8 HINGE BUTT Stainless Steel 1

9 BOLT Steel 6

10 SCREW Stainless Steel 1

11 FLANGE Cast Iron 1

12 BODY Cast Iron 1

13 FLANGE GASKET Armstrong 1

14N* NIPPLE Steel 1

14V* VACUUM Brass 1

CHECK VALVE

*14N and 14V are optional at customer’s request

1

ITEM DESCRIPTION MATERIAL ASTM

1VALVE SEAT STAINLESS STEEL A582
2 PLUNGER BUTTON VITON D2000
4VALVE LEVER STAINLESS STEEL A240
5 SCREW (DRIVE) STAINLESS STEEL A193
6 BALL FLOAT STAINLESS STEEL A240
7HINGE PIN STAINLESS STEEL A313
8 HINGE BUTT STAINLESS STEEL A240

9 BOLT STEEL A307
10 SCREW STAINLESS STEEL A193
11 FLANGE CAST IRON A126 CL.B
12 BODY CAST IRON A126 CL.B
13 FLANGE GASKET ARMSTRONG N-8092 N/A
29 PLUG (NOT SHOWN) BRASS B505

Crispin Valve, 600 Fowler Ave., Berwick, PA 18603 • 1-800-AIR-VALV • T: [phone] • F: [phone] • WWW.CRISPINVALVE.COM • [e-mail]

M

Submittal Sheet for Crispin M Series

SUBMITTAL SHEET FOR M SERIES

3/8”–1” Pressure Air Release Midget

Manufactured in compliance with ANSI/AWWA C512 Date: October, 2001

Specifications

The valve(s) shall be installed at high points in the
line to vent the accumulation of air and other
gases with the line under pressure.

The valve(s) shall have a __________” orifice
with valve sealing faces of stainless steel and
Buna-N rubber, and shall operate at __________
PSIG. Valves which use a needle valve to seal
the orifice shall not be acceptable.

The valve(s) shall be Crispin-Multiplex Model
_________ Midget Air Valve(s) as manufactured
by Multiplex Manufacturing Co., Berwick, PA.

Valve construction shall be _____________”
NPT screwed, cast iron body and top flange with
stainless steel float and trim.

Option: Where pressures are greater than 300
PSIG, the valve(s) shall be ___________ NPT”
inlet connection, and shall have a (steel, stainless
steel, or ductile iron) body, top and inlet flange.

Standard operating pressure for Crispin Air Valves
is 20 to 150 PSIG. Please check one of the fol­lowing if your operating needs differ:
____ 2 to 40 PSIG ____ 151 to 300 PSIG

Size Specifications

MODEL INLET SIZE OUTLET SIZE A B WHT.

M3 3/8” NPT 3/8” NPT 5.00 5.75 6

M5 1/2” NPT 3/8” NPT 5.00 5.75 7

M8 3/4” NPT 3/8” NPT 5.00 5.75 7
M10 1” NPT 3/8” NPT 5.00 5.75 8

Orifice Options

DIAMETER MAX. PRESSURE DISCHARGE RATE

5/32 40 PSIG 12.6 SCFM

1/8 50 PSIG 9.6 SCFM
3/32 85 PSIG 8.3 SCFM
1/16 150 PSIG 6.1 SCFM
3/64 200 PSIG 4.5 SCFM
1/32 300 PSIG 3.2 SCFM

A

B

1

9

2

7

4

6

5

12

8

13

10

11

Parts List

2